LCOV - code coverage report
Current view: top level - gcc/cp - error.cc (source / functions) Coverage Total Hit
Test: gcc.info Lines: 88.0 % 2862 2519
Test Date: 2026-08-22 16:33:35 Functions: 96.3 % 109 105
Legend: Lines:     hit not hit

            Line data    Source code
       1              : /* Call-backs for C++ error reporting.
       2              :    This code is non-reentrant.
       3              :    Copyright (C) 1993-2026 Free Software Foundation, Inc.
       4              :    This file is part of GCC.
       5              : 
       6              : GCC is free software; you can redistribute it and/or modify
       7              : it under the terms of the GNU General Public License as published by
       8              : the Free Software Foundation; either version 3, or (at your option)
       9              : any later version.
      10              : 
      11              : GCC is distributed in the hope that it will be useful,
      12              : but WITHOUT ANY WARRANTY; without even the implied warranty of
      13              : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14              : GNU General Public License for more details.
      15              : 
      16              : You should have received a copy of the GNU General Public License
      17              : along with GCC; see the file COPYING3.  If not see
      18              : <http://www.gnu.org/licenses/>.  */
      19              : 
      20              : #define INCLUDE_VECTOR
      21              : #include "config.h"
      22              : /* For use with name_hint.  */
      23              : #include "system.h"
      24              : #include "coretypes.h"
      25              : #include "cp-tree.h"
      26              : #include "stringpool.h"
      27              : #include "tree-diagnostic.h"
      28              : #include "diagnostics/color.h"
      29              : #include "langhooks-def.h"
      30              : #include "intl.h"
      31              : #include "cxx-pretty-print.h"
      32              : #include "tree-pretty-print.h"
      33              : #include "tree-pretty-print-markup.h"
      34              : #include "gimple-pretty-print.h"
      35              : #include "c-family/c-objc.h"
      36              : #include "ubsan.h"
      37              : #include "internal-fn.h"
      38              : #include "c-family/c-type-mismatch.h"
      39              : #include "cp-name-hint.h"
      40              : #include "attribs.h"
      41              : #include "pretty-print-format-impl.h"
      42              : #include "diagnostics/text-sink.h"
      43              : 
      44              : #define pp_separate_with_comma(PP) pp_cxx_separate_with (PP, ',')
      45              : #define pp_separate_with_semicolon(PP) pp_cxx_separate_with (PP, ';')
      46              : 
      47              : /* cxx_pp is a C++ front-end-specific pretty printer: this is where we
      48              :    dump C++ ASTs as strings. It is mostly used only by the various
      49              :    tree -> string functions that are occasionally called from the
      50              :    debugger or by the front-end for things like
      51              :    __PRETTY_FUNCTION__.  */
      52              : static cxx_pretty_printer actual_pretty_printer;
      53              : static cxx_pretty_printer * const cxx_pp = &actual_pretty_printer;
      54              : 
      55              : /* Translate if being used for diagnostics, but not for dump files or
      56              :    __PRETTY_FUNCTION.  */
      57              : #define M_(msgid) (pp_translate_identifiers (cxx_pp) ? _(msgid) : (msgid))
      58              : 
      59              : # define NEXT_CODE(T) (TREE_CODE (TREE_TYPE (T)))
      60              : 
      61              : static const char *args_to_string (tree, int);
      62              : static const char *code_to_string (enum tree_code);
      63              : static const char *cv_to_string (tree, int);
      64              : static const char *decl_to_string (tree, int, bool);
      65              : static const char *fndecl_to_string (tree, int);
      66              : static const char *op_to_string (bool, enum tree_code);
      67              : static const char *parm_to_string (int);
      68              : static const char *type_to_string (tree, int, bool, bool *, bool,
      69              :                                    const char * = nullptr);
      70              : 
      71              : static void dump_alias_template_specialization (cxx_pretty_printer *, tree, int);
      72              : static void dump_type (cxx_pretty_printer *, tree, int);
      73              : static void dump_typename (cxx_pretty_printer *, tree, int);
      74              : static void dump_simple_decl (cxx_pretty_printer *, tree, tree, int);
      75              : static void dump_decl (cxx_pretty_printer *, tree, int);
      76              : static void dump_template_decl (cxx_pretty_printer *, tree, int);
      77              : static void dump_function_decl (cxx_pretty_printer *, tree, int);
      78              : static void dump_expr (cxx_pretty_printer *, tree, int);
      79              : static void dump_unary_op (cxx_pretty_printer *, const char *, tree, int);
      80              : static void dump_binary_op (cxx_pretty_printer *, const char *, tree, int);
      81              : static void dump_aggr_type (cxx_pretty_printer *, tree, int);
      82              : static void dump_type_prefix (cxx_pretty_printer *, tree, int);
      83              : static void dump_type_suffix (cxx_pretty_printer *, tree, int);
      84              : static void dump_function_name (cxx_pretty_printer *, tree, int);
      85              : static void dump_call_expr_args (cxx_pretty_printer *, tree, int, bool);
      86              : static void dump_expr_list (cxx_pretty_printer *, tree, int);
      87              : static void dump_global_iord (cxx_pretty_printer *, tree);
      88              : static void dump_parameters (cxx_pretty_printer *, tree, int);
      89              : static void dump_ref_qualifier (cxx_pretty_printer *, tree, int);
      90              : static void dump_exception_spec (cxx_pretty_printer *, tree, int);
      91              : static void dump_template_argument (cxx_pretty_printer *, tree, int);
      92              : static void dump_template_argument_list (cxx_pretty_printer *, tree, int);
      93              : static void dump_template_parameter (cxx_pretty_printer *, tree, int);
      94              : static void dump_template_bindings (cxx_pretty_printer *, tree, tree,
      95              :                                     vec<tree, va_gc> *);
      96              : static void dump_scope (cxx_pretty_printer *, tree, int);
      97              : static void dump_template_parms (cxx_pretty_printer *, tree, int, int);
      98              : static int get_non_default_template_args_count (tree, int);
      99              : static const char *function_category (tree);
     100              : static void maybe_print_constexpr_context (diagnostics::text_sink &);
     101              : static void maybe_print_instantiation_context (diagnostics::text_sink &);
     102              : static void print_instantiation_full_context (diagnostics::text_sink &);
     103              : static void print_instantiation_partial_context (diagnostics::text_sink &,
     104              :                                                  struct tinst_level *,
     105              :                                                  location_t);
     106              : static void maybe_print_constraint_context (diagnostics::text_sink &);
     107              : static void cp_diagnostic_text_starter (diagnostics::text_sink &,
     108              :                                         const diagnostics::diagnostic_info *);
     109              : static void cp_print_error_function (diagnostics::text_sink &,
     110              :                                      const diagnostics::diagnostic_info *);
     111              : 
     112              : static bool cp_printer (pretty_printer *, text_info *, const char *,
     113              :                         int, bool, bool, bool, bool *, pp_token_list &);
     114              : 
     115              : /* Color names for highlighting "%qH" vs "%qI" values,
     116              :    and ranges corresponding to them.  */
     117              : const char *const highlight_colors::percent_h = "highlight-a";
     118              : const char *const highlight_colors::percent_i = "highlight-b";
     119              : 
     120              : /* Struct for handling %H or %I, which require delaying printing the
     121              :    type until a postprocessing stage.  */
     122              : 
     123       127212 : class deferred_printed_type
     124              : {
     125              : public:
     126       348040 :   deferred_printed_type ()
     127       348040 :   : m_tree (NULL_TREE),
     128       348040 :     m_printed_text (),
     129       348040 :     m_token_list (nullptr),
     130        21202 :     m_verbose (false), m_quote (false)
     131              :   {}
     132              : 
     133        21202 :   deferred_printed_type (tree type,
     134              :                          pp_token_list &token_list,
     135              :                          bool verbose,
     136              :                          bool quote)
     137        21202 :   : m_tree (type),
     138        21202 :     m_printed_text (),
     139        21202 :     m_token_list (&token_list),
     140        21202 :     m_verbose (verbose),
     141        21202 :     m_quote (quote)
     142              :   {
     143        21202 :     gcc_assert (type);
     144              :   }
     145              : 
     146        21202 :   void set_text_for_token_list (const char *text, bool quote)
     147              :   {
     148              :     /* Replace the contents of m_token_list with a text token for TEXT,
     149              :        possibly wrapped by BEGIN_QUOTE/END_QUOTE (if QUOTE is true).
     150              :        This allows us to ignore any {BEGIN,END}_QUOTE tokens added
     151              :        by %qH and %qI, and instead use the quoting from type_to_string,
     152              :        and its logic for "aka".  */
     153        63606 :     while (m_token_list->m_first)
     154        42404 :       m_token_list->pop_front ();
     155              : 
     156        21202 :     if (quote)
     157          388 :       m_token_list->push_back<pp_token_begin_quote> ();
     158              : 
     159              :     // TEXT is gc-allocated, so we can borrow it
     160        21202 :     m_token_list->push_back_text (label_text::borrow (text));
     161              : 
     162        21202 :     if (quote)
     163          388 :       m_token_list->push_back<pp_token_end_quote> ();
     164        21202 :   }
     165              : 
     166              :   /* The tree is not GTY-marked: they are only non-NULL within a
     167              :      call to pp_format.  */
     168              :   tree m_tree;
     169              :   label_text m_printed_text;
     170              :   pp_token_list *m_token_list;
     171              :   bool m_verbose;
     172              :   bool m_quote;
     173              : };
     174              : 
     175              : /* Subclass of format_postprocessor for the C++ frontend.
     176              :    This handles the %H and %I formatting codes, printing them
     177              :    in a postprocessing phase (since they affect each other).  */
     178              : 
     179              : class cxx_format_postprocessor : public format_postprocessor
     180              : {
     181              :  public:
     182       326838 :   cxx_format_postprocessor ()
     183       326838 :   : m_type_a (), m_type_b ()
     184              :   {}
     185              : 
     186              :   std::unique_ptr<format_postprocessor>
     187       226034 :   clone() const final override
     188              :   {
     189       226034 :     return std::make_unique<cxx_format_postprocessor> ();
     190              :   }
     191              : 
     192              :   void handle (pretty_printer *pp) final override;
     193              : 
     194              :   deferred_printed_type m_type_a;
     195              :   deferred_printed_type m_type_b;
     196              : };
     197              : 
     198              : /* Constructor and destructor for cxx_dump_pretty_printer, defined here to
     199              :    avoid needing to move cxx_format_postprocessor into the header as well.  */
     200              : 
     201    920646182 : cxx_dump_pretty_printer::
     202              : cxx_dump_pretty_printer (int phase)
     203    920646182 :   : phase (phase)
     204              : {
     205    920646182 :   outf = dump_begin (phase, &flags);
     206    920646182 :   if (outf)
     207              :     {
     208            0 :       pp_format_decoder (this) = cp_printer;
     209            0 :       set_format_postprocessor (std::make_unique<cxx_format_postprocessor> ());
     210            0 :       set_output_stream (outf);
     211              :     }
     212    920646182 : }
     213              : 
     214    920646182 : cxx_dump_pretty_printer::
     215    920646182 : ~cxx_dump_pretty_printer ()
     216              : {
     217    920646182 :   if (outf)
     218              :     {
     219            0 :       pp_flush (this);
     220            0 :       dump_end (phase, outf);
     221              :     }
     222    920646182 : }
     223              : 
     224              : /* Return the in-scope template that's currently being parsed, or
     225              :    NULL_TREE otherwise.  */
     226              : 
     227              : static tree
     228       122804 : get_current_template ()
     229              : {
     230       122804 :   if (scope_chain && in_template_context && !current_instantiation ())
     231        16036 :     if (tree ti = get_template_info (current_scope ()))
     232              :       {
     233         4948 :         if (PRIMARY_TEMPLATE_P (TI_TEMPLATE (ti)) && TI_PARTIAL_INFO (ti))
     234           24 :           ti = TI_PARTIAL_INFO (ti);
     235         4948 :         return TI_TEMPLATE (ti);
     236              :       }
     237              : 
     238              :   return NULL_TREE;
     239              : }
     240              : 
     241              : /* A map from TEMPLATE_DECLs that we've determined to be erroneous
     242              :    at parse time to the location of the first error within.  */
     243              : 
     244              : erroneous_templates_t *erroneous_templates;
     245              : 
     246              : /* Callback function diagnostics::context::m_adjust_diagnostic_info.
     247              : 
     248              :    Errors issued when parsing a template are automatically treated like
     249              :    permerrors associated with the -Wtemplate-body flag and can be
     250              :    downgraded into warnings accordingly, in which case we'll still
     251              :    issue an error if we later need to instantiate the template.  */
     252              : 
     253              : static void
     254    104006607 : cp_adjust_diagnostic_info (const diagnostics::context &context,
     255              :                            diagnostics::diagnostic_info *diagnostic)
     256              : {
     257    104006607 :   if (diagnostic->m_kind == diagnostics::kind::error)
     258       122786 :     if (tree tmpl = get_current_template ())
     259              :       {
     260         4930 :         diagnostic->m_option_id = OPT_Wtemplate_body;
     261              : 
     262         4930 :         if (context.m_permissive)
     263           48 :           diagnostic->m_kind = diagnostics::kind::warning;
     264              : 
     265         4930 :         bool existed;
     266         4930 :         location_t &error_loc
     267         4930 :           = hash_map_safe_get_or_insert<true> (erroneous_templates,
     268              :                                                tmpl, &existed);
     269         4930 :         if (!existed)
     270              :           /* Remember that this template had a parse-time error so
     271              :              that we'll ensure a hard error has been issued upon
     272              :              its instantiation.  */
     273         2368 :           error_loc = diagnostic->m_richloc->get_loc ();
     274              :       }
     275    104006607 : }
     276              : 
     277              : /* A generalization of seen_error which also returns true if we've
     278              :    permissively downgraded an error to a warning inside a template.  */
     279              : 
     280              : bool
     281      9368157 : cp_seen_error ()
     282              : {
     283      9368157 :   if ((seen_error) ())
     284              :     return true;
     285              : 
     286      9345223 :   if (erroneous_templates)
     287           18 :     if (tree tmpl = get_current_template ())
     288           18 :       if (erroneous_templates->get (tmpl))
     289           18 :         return true;
     290              : 
     291              :   return false;
     292              : }
     293              : 
     294              : /* CONTEXT->printer is a basic pretty printer that was constructed
     295              :    presumably by diagnostic_initialize(), called early in the
     296              :    compiler's initialization process (in general_init) Before the FE
     297              :    is initialized.  This (C++) FE-specific diagnostic initializer is
     298              :    thus replacing the basic pretty printer with one that has C++-aware
     299              :    capacities.  */
     300              : 
     301              : void
     302       100804 : cxx_initialize_diagnostics (diagnostics::context *context)
     303              : {
     304       100804 :   cxx_pretty_printer *pp = new cxx_pretty_printer ();
     305       100804 :   pp->set_format_postprocessor (std::make_unique<cxx_format_postprocessor> ());
     306       100804 :   context->set_pretty_printer (std::unique_ptr<pretty_printer> (pp));
     307              : 
     308       100804 :   c_common_diagnostics_set_defaults (context);
     309       100804 :   diagnostics::text_starter (context) = cp_diagnostic_text_starter;
     310              :   /* diagnostic_finalizer is already c_diagnostic_text_finalizer.  */
     311       100804 :   context->set_format_decoder (cp_printer);
     312       100804 :   context->set_adjust_diagnostic_info_callback (cp_adjust_diagnostic_info);
     313       100804 : }
     314              : 
     315              : /* Dump an '@module' name suffix for DECL, if it's attached to an import.  */
     316              : 
     317              : static void
     318    237266140 : dump_module_suffix (cxx_pretty_printer *pp, tree decl)
     319              : {
     320    237266140 :   if (!modules_p ())
     321              :     return;
     322              : 
     323       178034 :   if (!DECL_CONTEXT (decl))
     324              :     return;
     325              : 
     326       177311 :   if (TREE_CODE (decl) != CONST_DECL
     327       177311 :       || !UNSCOPED_ENUM_P (DECL_CONTEXT (decl)))
     328              :     {
     329       177283 :       if (!DECL_NAMESPACE_SCOPE_P (decl))
     330              :         return;
     331              : 
     332        85106 :       if (TREE_CODE (decl) == NAMESPACE_DECL
     333            0 :           && !DECL_NAMESPACE_ALIAS (decl)
     334        85106 :           && (TREE_PUBLIC (decl) || !TREE_PUBLIC (CP_DECL_CONTEXT (decl))))
     335              :         return;
     336              :     }
     337              : 
     338        85134 :   int m = get_originating_module (decl, /*global=-1*/true);
     339        85134 :   if (m > 0)
     340          402 :     if (const char *n = module_name (m, false))
     341              :       {
     342          402 :         pp_character (pp, '@');
     343          402 :         pp->set_padding (pp_none);
     344          402 :         pp_string (pp, n);
     345              :       }
     346              : }
     347              : 
     348              : /* The scope of the declaration we're currently printing, to avoid redundantly
     349              :    dumping the same scope on parameter types.  */
     350              : static tree current_dump_scope;
     351              : 
     352              : /* Dump a scope, if deemed necessary.  */
     353              : 
     354              : static void
     355    179022865 : dump_scope (cxx_pretty_printer *pp, tree scope, int flags)
     356              : {
     357    179022865 :   int f = flags & (TFF_SCOPE | TFF_CHASE_TYPEDEF);
     358              : 
     359    179022865 :   if (scope == NULL_TREE || scope == current_dump_scope)
     360              :     return;
     361              : 
     362              :   /* Enum values within an unscoped enum will be CONST_DECL with an
     363              :      ENUMERAL_TYPE as their "scope".  Use CP_TYPE_CONTEXT of the
     364              :      ENUMERAL_TYPE, so as to print any enclosing namespace.  */
     365    178769426 :   if (UNSCOPED_ENUM_P (scope))
     366          231 :     scope = CP_TYPE_CONTEXT (scope);
     367              : 
     368    178769426 :   if (TREE_CODE (scope) == NAMESPACE_DECL)
     369              :     {
     370    159283371 :       if (scope != global_namespace)
     371              :         {
     372     88554527 :           dump_decl (pp, scope, f);
     373     88554527 :           pp_cxx_colon_colon (pp);
     374              :         }
     375              :     }
     376     19486055 :   else if (AGGREGATE_TYPE_P (scope)
     377     19486055 :            || SCOPED_ENUM_P (scope))
     378              :     {
     379     18775510 :       dump_type (pp, scope, f);
     380     18775510 :       pp_cxx_colon_colon (pp);
     381              :     }
     382       710545 :   else if ((flags & TFF_SCOPE) && TREE_CODE (scope) == FUNCTION_DECL)
     383              :     {
     384       694927 :       dump_function_decl (pp, scope, f | TFF_NO_TEMPLATE_BINDINGS);
     385       694927 :       pp_cxx_colon_colon (pp);
     386              :     }
     387              : }
     388              : 
     389              : /* Dump the template ARGument under control of FLAGS.  */
     390              : 
     391              : static void
     392    157599150 : dump_template_argument (cxx_pretty_printer *pp, tree arg, int flags)
     393              : {
     394    157599150 :   if (ARGUMENT_PACK_P (arg))
     395      7481377 :     dump_template_argument_list (pp, ARGUMENT_PACK_ARGS (arg),
     396              :                                  /* No default args in argument packs.  */
     397              :                                  flags|TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
     398    150117773 :   else if (TYPE_P (arg) || TREE_CODE (arg) == TEMPLATE_DECL)
     399    126607321 :     dump_type (pp, arg, flags & ~TFF_CLASS_KEY_OR_ENUM);
     400              :   else
     401              :     {
     402     23510452 :       if (TREE_CODE (arg) == TREE_LIST)
     403            0 :         arg = TREE_VALUE (arg);
     404              : 
     405              :       /* Strip implicit conversions.  */
     406     23510515 :       while (CONVERT_EXPR_P (arg))
     407           63 :         arg = TREE_OPERAND (arg, 0);
     408              : 
     409     23510452 :       dump_expr (pp, arg, (flags | TFF_EXPR_IN_PARENS) & ~TFF_CLASS_KEY_OR_ENUM);
     410              :     }
     411    157599150 : }
     412              : 
     413              : /* Count the number of template arguments ARGS whose value does not
     414              :    match the (optional) default template parameter in PARAMS  */
     415              : 
     416              : static int
     417    100231439 : get_non_default_template_args_count (tree args, int flags)
     418              : {
     419    100231439 :   int n = TREE_VEC_LENGTH (INNERMOST_TEMPLATE_ARGS (args));
     420              : 
     421    100231439 :   if (/* We use this flag when generating debug information.  We don't
     422              :          want to expand templates at this point, for this may generate
     423              :          new decls, which gets decl counts out of sync, which may in
     424              :          turn cause codegen differences between compilations with and
     425              :          without -g.  */
     426    100231439 :       (flags & TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS) != 0
     427      5657196 :       || !flag_pretty_templates)
     428              :     return n;
     429              : 
     430      5657139 :   return GET_NON_DEFAULT_TEMPLATE_ARGS_COUNT (INNERMOST_TEMPLATE_ARGS (args));
     431              : }
     432              : 
     433              : /* Dump a template-argument-list ARGS (always a TREE_VEC) under control
     434              :    of FLAGS.  */
     435              : 
     436              : static void
     437      7486713 : dump_template_argument_list (cxx_pretty_printer *pp, tree args, int flags)
     438              : {
     439      7486713 :   int n = get_non_default_template_args_count (args, flags);
     440      7486713 :   int need_comma = 0;
     441      7486713 :   int i;
     442              : 
     443     29825723 :   for (i = 0; i < n; ++i)
     444              :     {
     445     14852297 :       tree arg = TREE_VEC_ELT (args, i);
     446              : 
     447              :       /* Only print a comma if we know there is an argument coming. In
     448              :          the case of an empty template argument pack, no actual
     449              :          argument will be printed.  */
     450     14852297 :       if (need_comma
     451     14852297 :           && (!ARGUMENT_PACK_P (arg)
     452          188 :               || TREE_VEC_LENGTH (ARGUMENT_PACK_ARGS (arg)) > 0))
     453      7955993 :         pp_separate_with_comma (pp);
     454              : 
     455     14852297 :       dump_template_argument (pp, arg, flags);
     456     14852297 :       need_comma = 1;
     457              :     }
     458      7486713 : }
     459              : 
     460              : /* Dump a template parameter PARM (a TREE_LIST) under control of FLAGS.  */
     461              : 
     462              : static void
     463        88593 : dump_template_parameter (cxx_pretty_printer *pp, tree parm, int flags)
     464              : {
     465        88593 :   tree p;
     466        88593 :   tree a;
     467              : 
     468        88593 :   if (parm == error_mark_node)
     469              :    return;
     470              : 
     471        88593 :   p = TREE_VALUE (parm);
     472        88593 :   a = TREE_PURPOSE (parm);
     473              : 
     474        88593 :   if (TREE_CODE (p) == TYPE_DECL)
     475              :     {
     476        80122 :       if (flags & TFF_DECL_SPECIFIERS)
     477              :         {
     478        10902 :           pp_cxx_ws_string (pp, "class");
     479        10902 :           if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (p)))
     480          869 :             pp_cxx_ws_string (pp, "...");
     481        10902 :           if (DECL_NAME (p))
     482        10151 :             pp_cxx_tree_identifier (pp, DECL_NAME (p));
     483              :         }
     484        69220 :       else if (DECL_NAME (p))
     485        68379 :         pp_cxx_tree_identifier (pp, DECL_NAME (p));
     486              :       else
     487          841 :         pp_cxx_canonical_template_parameter (pp, TREE_TYPE (p));
     488              :     }
     489              :   else
     490         8471 :     dump_decl (pp, p, flags | TFF_DECL_SPECIFIERS);
     491              : 
     492        88593 :   if ((flags & TFF_FUNCTION_DEFAULT_ARGUMENTS) && a != NULL_TREE)
     493              :     {
     494            0 :       pp_cxx_whitespace (pp);
     495            0 :       pp_equal (pp);
     496            0 :       pp_cxx_whitespace (pp);
     497            0 :       if (TREE_CODE (p) == TYPE_DECL || TREE_CODE (p) == TEMPLATE_DECL)
     498            0 :         dump_type (pp, a, flags & ~TFF_CHASE_TYPEDEF);
     499              :       else
     500            0 :         dump_expr (pp, a, flags | TFF_EXPR_IN_PARENS);
     501              :     }
     502              : }
     503              : 
     504              : /* Dump, under control of FLAGS, a template-parameter-list binding.
     505              :    PARMS is a TREE_LIST of TREE_VEC of TREE_LIST and ARGS is a
     506              :    TREE_VEC.  */
     507              : 
     508              : static void
     509        49723 : dump_template_bindings (cxx_pretty_printer *pp, tree parms, tree args,
     510              :                         vec<tree, va_gc> *typenames)
     511              : {
     512              :   /* Print "[with" and ']', conditional on whether anything is printed at all.
     513              :      This is tied to whether a semicolon is needed to separate multiple template
     514              :      parameters.  */
     515        49723 :   struct prepost_semicolon
     516              :   {
     517              :     cxx_pretty_printer *pp;
     518              :     bool need_semicolon;
     519              : 
     520        87858 :     void operator() ()
     521              :     {
     522        87858 :       if (need_semicolon)
     523        38135 :         pp_separate_with_semicolon (pp);
     524              :       else
     525              :         {
     526        49723 :           pp_cxx_whitespace (pp);
     527        49723 :           pp_string (pp, colorize_start (pp_show_color (pp), "targs"));
     528        49723 :           pp_cxx_left_bracket (pp);
     529        49723 :           pp->translate_string ("with");
     530        49723 :           pp_cxx_whitespace (pp);
     531        49723 :           need_semicolon = true;
     532              :         }
     533        87858 :     }
     534              : 
     535        49723 :     ~prepost_semicolon ()
     536              :     {
     537        49723 :       if (need_semicolon)
     538              :         {
     539        49723 :           pp_cxx_right_bracket (pp);
     540        49723 :           pp_string (pp, colorize_stop (pp_show_color (pp)));
     541              :         }
     542        49723 :     }
     543        49723 :   } semicolon_or_introducer = {pp, false};
     544              : 
     545        49723 :   int i;
     546        49723 :   tree t;
     547              : 
     548       101048 :   while (parms)
     549              :     {
     550        51325 :       tree p = TREE_VALUE (parms);
     551        51325 :       int lvl = TMPL_PARMS_DEPTH (parms);
     552        51325 :       int arg_idx = 0;
     553        51325 :       int i;
     554        51325 :       tree lvl_args = NULL_TREE;
     555              : 
     556              :       /* Don't crash if we had an invalid argument list.  */
     557       150786 :       if (TMPL_ARGS_DEPTH (args) >= lvl)
     558       102638 :         lvl_args = TMPL_ARGS_LEVEL (args, lvl);
     559              : 
     560       127809 :       for (i = 0; i < TREE_VEC_LENGTH (p); ++i)
     561              :         {
     562        76484 :           tree arg = NULL_TREE;
     563              : 
     564              :           /* Don't crash if we had an invalid argument list.  */
     565       152962 :           if (lvl_args && NUM_TMPL_ARGS (lvl_args) > arg_idx)
     566        76478 :             arg = TREE_VEC_ELT (lvl_args, arg_idx);
     567              : 
     568        76484 :           tree parm_i = TREE_VEC_ELT (p, i);
     569              :           /* If the template argument repeats the template parameter (T = T),
     570              :              skip the parameter.*/
     571        76445 :           if (arg && TREE_CODE (arg) == TEMPLATE_TYPE_PARM
     572         1032 :               && arg == TYPE_MAIN_VARIANT (arg)
     573         1032 :               && TREE_CODE (parm_i) == TREE_LIST
     574         1032 :               && TREE_CODE (TREE_VALUE (parm_i)) == TYPE_DECL
     575         1013 :               && (TREE_CODE (TREE_TYPE (TREE_VALUE (parm_i)))
     576              :                   == TEMPLATE_TYPE_PARM)
     577        77497 :               && (DECL_NAME (TREE_VALUE (parm_i))
     578         1013 :                   == DECL_NAME (TYPE_STUB_DECL (arg))))
     579          559 :             continue;
     580              : 
     581        75925 :           semicolon_or_introducer ();
     582        75925 :           dump_template_parameter (pp, parm_i, TFF_PLAIN_IDENTIFIER);
     583        75925 :           pp_cxx_whitespace (pp);
     584        75925 :           pp_equal (pp);
     585        75925 :           pp_cxx_whitespace (pp);
     586        75925 :           if (arg)
     587              :             {
     588        75886 :               if (ARGUMENT_PACK_P (arg))
     589         2838 :                 pp_cxx_left_brace (pp);
     590        75886 :               dump_template_argument (pp, arg, TFF_PLAIN_IDENTIFIER);
     591        75886 :               if (ARGUMENT_PACK_P (arg))
     592         2838 :                 pp_cxx_right_brace (pp);
     593              :             }
     594              :           else
     595           39 :             pp_string (pp, M_("<missing>"));
     596              : 
     597        75925 :           ++arg_idx;
     598              :         }
     599              : 
     600        51325 :       parms = TREE_CHAIN (parms);
     601              :     }
     602              : 
     603              :   /* Don't bother with typenames for a partial instantiation.  */
     604        58959 :   if (vec_safe_is_empty (typenames) || uses_template_parms (args))
     605              :     return;
     606              : 
     607              :   /* Don't try to print typenames when we're processing a clone.  */
     608         9026 :   if (current_function_decl
     609         9026 :       && !DECL_LANG_SPECIFIC (current_function_decl))
     610              :     return;
     611              : 
     612              :   /* Don't try to do this once cgraph starts throwing away front-end
     613              :      information.  */
     614         9026 :   if (at_eof >= 3)
     615              :     return;
     616              : 
     617        20684 :   FOR_EACH_VEC_SAFE_ELT (typenames, i, t)
     618              :     {
     619        11933 :       semicolon_or_introducer ();
     620        11933 :       dump_type (pp, t, TFF_PLAIN_IDENTIFIER);
     621        11933 :       pp_cxx_whitespace (pp);
     622        11933 :       pp_equal (pp);
     623        11933 :       pp_cxx_whitespace (pp);
     624        11933 :       push_deferring_access_checks (dk_no_check);
     625        11933 :       t = tsubst (t, args, tf_none, NULL_TREE);
     626        11933 :       pop_deferring_access_checks ();
     627              :       /* Strip typedefs.  We can't just use TFF_CHASE_TYPEDEF because
     628              :          pp_simple_type_specifier doesn't know about it.  */
     629        11933 :       t = strip_typedefs (t, NULL, STF_USER_VISIBLE);
     630        11933 :       dump_type (pp, t, TFF_PLAIN_IDENTIFIER);
     631              :     }
     632        49723 : }
     633              : 
     634              : /* Dump a human-readable equivalent of the alias template
     635              :    specialization of T.  */
     636              : 
     637              : static void
     638         9185 : dump_alias_template_specialization (cxx_pretty_printer *pp, tree t, int flags)
     639              : {
     640         9185 :   gcc_assert (alias_template_specialization_p (t, nt_opaque));
     641              : 
     642         9185 :   tree decl = TYPE_NAME (t);
     643         9185 :   if (!(flags & TFF_UNQUALIFIED_NAME))
     644         9185 :     dump_scope (pp, CP_DECL_CONTEXT (decl), flags);
     645         9185 :   pp_cxx_tree_identifier (pp, DECL_NAME (decl));
     646         9185 :   dump_template_parms (pp, DECL_TEMPLATE_INFO (decl),
     647              :                        /*primary=*/false,
     648              :                        flags & ~TFF_TEMPLATE_HEADER);
     649         9185 : }
     650              : 
     651              : /* Dump a human-readable equivalent of TYPE.  FLAGS controls the
     652              :    format.  */
     653              : 
     654              : static void
     655    228953551 : dump_type (cxx_pretty_printer *pp, tree t, int flags)
     656              : {
     657    228953581 :   if (t == NULL_TREE)
     658              :     return;
     659              : 
     660              :   /* Don't print e.g. "struct mytypedef".  */
     661    228953567 :   if (TYPE_P (t) && typedef_variant_p (t))
     662              :     {
     663      1196806 :       tree decl = TYPE_NAME (t);
     664      1196806 :       if ((flags & TFF_CHASE_TYPEDEF)
     665      1196806 :                || DECL_SELF_REFERENCE_P (decl)
     666      2392969 :                || (!flag_pretty_templates
     667            6 :                    && DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl)))
     668              :         {
     669            0 :           unsigned int stf_flags = (!(pp->flags & pp_c_flag_gnu_v3)
     670          649 :                                     ? STF_USER_VISIBLE : 0);
     671          649 :           t = strip_typedefs (t, NULL, stf_flags);
     672              :         }
     673      1196157 :       else if (alias_template_specialization_p (t, nt_opaque))
     674              :         {
     675         9185 :           dump_alias_template_specialization (pp, t, flags);
     676         9185 :           return;
     677              :         }
     678      1186972 :       else if (same_type_p (t, TREE_TYPE (decl)))
     679              :         t = decl;
     680              :       else
     681              :         {
     682         3074 :           pp_cxx_cv_qualifier_seq (pp, t);
     683         3074 :           if (! (flags & TFF_UNQUALIFIED_NAME))
     684         3074 :             dump_scope (pp, CP_DECL_CONTEXT (decl), flags);
     685         3074 :           pp_cxx_tree_identifier (pp, TYPE_IDENTIFIER (t));
     686         3074 :           return;
     687              :         }
     688              :     }
     689              : 
     690    228941308 :   if (TYPE_PTRMEMFUNC_P (t))
     691       174578 :     goto offset_type;
     692              : 
     693    228766730 :   switch (TREE_CODE (t))
     694              :     {
     695          447 :     case LANG_TYPE:
     696          447 :       if (t == init_list_type_node)
     697          286 :         pp_string (pp, M_("<brace-enclosed initializer list>"));
     698          161 :       else if (t == unknown_type_node)
     699          161 :         pp_string (pp, M_("<unresolved overloaded function type>"));
     700              :       else
     701              :         {
     702            0 :           pp_cxx_cv_qualifier_seq (pp, t);
     703            0 :           if (tree id = TYPE_IDENTIFIER (t))
     704            0 :             pp_cxx_tree_identifier (pp, id);
     705              :         }
     706              :       break;
     707              : 
     708           99 :     case TREE_VEC:
     709           99 :       {
     710              :         /* A list of types used for a trait.  */
     711           99 :         bool need_comma = false;
     712          229 :         for (tree arg : tree_vec_range (t))
     713              :           {
     714          130 :             if (need_comma)
     715           31 :               pp_separate_with_comma (pp);
     716          130 :             dump_type (pp, arg, flags);
     717          130 :             need_comma = true;
     718              :           }
     719              :       }
     720           99 :       break;
     721              : 
     722            0 :     case TREE_LIST:
     723              :       /* A list of function parms.  */
     724            0 :       dump_parameters (pp, t, flags);
     725            0 :       break;
     726              : 
     727          293 :     case IDENTIFIER_NODE:
     728          293 :       pp_cxx_tree_identifier (pp, t);
     729          293 :       break;
     730              : 
     731           24 :     case TREE_BINFO:
     732           24 :       dump_type (pp, BINFO_TYPE (t), flags);
     733           24 :       break;
     734              : 
     735    138435542 :     case RECORD_TYPE:
     736    138435542 :     case UNION_TYPE:
     737    138435542 :     case ENUMERAL_TYPE:
     738    138435542 :       dump_aggr_type (pp, t, flags);
     739    138435542 :       break;
     740              : 
     741      1184456 :     case TYPE_DECL:
     742      1184456 :       if (flags & TFF_CHASE_TYPEDEF)
     743              :         {
     744            0 :           dump_type (pp, DECL_ORIGINAL_TYPE (t)
     745            0 :                      ? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t), flags);
     746              :           break;
     747              :         }
     748              :       /* Fall through.  */
     749              : 
     750      1678864 :     case TEMPLATE_DECL:
     751      1678864 :     case NAMESPACE_DECL:
     752      1678864 :     case CONST_DECL:
     753      1678864 :       dump_decl (pp, t, flags & ~TFF_DECL_SPECIFIERS);
     754      1678864 :       break;
     755              : 
     756     59826379 :     case INTEGER_TYPE:
     757     59826379 :     case REAL_TYPE:
     758     59826379 :     case VOID_TYPE:
     759     59826379 :     case OPAQUE_TYPE:
     760     59826379 :     case BOOLEAN_TYPE:
     761     59826379 :     case COMPLEX_TYPE:
     762     59826379 :     case VECTOR_TYPE:
     763     59826379 :     case FIXED_POINT_TYPE:
     764     59826379 :       pp_type_specifier_seq (pp, t);
     765     59826379 :       break;
     766              : 
     767         1731 :     case TEMPLATE_TEMPLATE_PARM:
     768              :       /* For parameters inside template signature.  */
     769         1731 :       if (TYPE_IDENTIFIER (t))
     770         3372 :         pp_cxx_tree_identifier (pp, TYPE_IDENTIFIER (t));
     771              :       else
     772           45 :         pp_cxx_canonical_template_parameter (pp, t);
     773              :       break;
     774              : 
     775          434 :     case BOUND_TEMPLATE_TEMPLATE_PARM:
     776          434 :       {
     777          434 :         tree args = TYPE_TI_ARGS (t);
     778          434 :         pp_cxx_cv_qualifier_seq (pp, t);
     779          868 :         pp_cxx_tree_identifier (pp, TYPE_IDENTIFIER (t));
     780          434 :         pp_cxx_begin_template_argument_list (pp);
     781          434 :         dump_template_argument_list (pp, args, flags);
     782          434 :         pp_cxx_end_template_argument_list (pp);
     783              :       }
     784          434 :       break;
     785              : 
     786       347422 :     case TEMPLATE_TYPE_PARM:
     787       347422 :       pp_cxx_cv_qualifier_seq (pp, t);
     788       347422 :       if (template_placeholder_p (t))
     789              :         {
     790           57 :           tree tmpl = TREE_TYPE (CLASS_PLACEHOLDER_TEMPLATE (t));
     791          114 :           pp_cxx_tree_identifier (pp, TYPE_IDENTIFIER (tmpl));
     792           57 :           pp_string (pp, "<...auto...>");
     793              :         }
     794       347365 :       else if (TYPE_IDENTIFIER (t))
     795       692974 :         pp_cxx_tree_identifier (pp, TYPE_IDENTIFIER (t));
     796              :       else
     797          878 :         pp_cxx_canonical_template_parameter
     798          878 :           (pp, TEMPLATE_TYPE_PARM_INDEX (t));
     799              :       /* If this is a constrained placeholder, add the requirements.  */
     800       347422 :       if (tree c = PLACEHOLDER_TYPE_CONSTRAINTS (t))
     801          181 :         pp_cxx_constrained_type_spec (pp, c);
     802              :       break;
     803              : 
     804              :       /* This is not always necessary for pointers and such, but doing this
     805              :          reduces code size.  */
     806     28473144 :     case ARRAY_TYPE:
     807     28473144 :     case POINTER_TYPE:
     808     28473144 :     case REFERENCE_TYPE:
     809     28473144 :     case OFFSET_TYPE:
     810     28473144 :     offset_type:
     811     28473144 :     case FUNCTION_TYPE:
     812     28473144 :     case METHOD_TYPE:
     813     28473144 :     {
     814     28473144 :       dump_type_prefix (pp, t, flags);
     815     28473144 :       dump_type_suffix (pp, t, flags);
     816     28473144 :       break;
     817              :     }
     818         3413 :     case TYPENAME_TYPE:
     819         3413 :       if (! (flags & TFF_CHASE_TYPEDEF)
     820         3413 :           && DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
     821              :         {
     822            0 :           dump_decl (pp, TYPE_NAME (t), TFF_PLAIN_IDENTIFIER);
     823            0 :           break;
     824              :         }
     825         3413 :       pp_cxx_cv_qualifier_seq (pp, t);
     826         3413 :       if (const char *tag = tag_name (get_typename_tag (t)))
     827         3384 :         pp_cxx_ws_string (pp, tag);
     828         3413 :       dump_typename (pp, t, flags);
     829         3413 :       break;
     830              : 
     831            6 :     case UNBOUND_CLASS_TEMPLATE:
     832            6 :       if (! (flags & TFF_UNQUALIFIED_NAME))
     833              :         {
     834            6 :           dump_type (pp, TYPE_CONTEXT (t), flags);
     835            6 :           pp_cxx_colon_colon (pp);
     836              :         }
     837            6 :       pp_cxx_ws_string (pp, "template");
     838            6 :       dump_type (pp, TYPE_IDENTIFIER (t), flags);
     839              :       break;
     840              : 
     841            3 :     case TYPEOF_TYPE:
     842            3 :       pp_cxx_ws_string (pp, "__typeof__");
     843            3 :       pp_cxx_whitespace (pp);
     844            3 :       pp_cxx_left_paren (pp);
     845            3 :       dump_expr (pp, TYPEOF_TYPE_EXPR (t), flags & ~TFF_EXPR_IN_PARENS);
     846            3 :       pp_cxx_right_paren (pp);
     847            3 :       break;
     848              : 
     849           42 :     case TRAIT_TYPE:
     850           42 :       pp_cxx_trait (pp, t);
     851           42 :       break;
     852              : 
     853        38279 :     case TYPE_PACK_EXPANSION:
     854        38279 :       dump_type (pp, PACK_EXPANSION_PATTERN (t), flags);
     855        38279 :       pp_cxx_ws_string (pp, "...");
     856        38279 :       break;
     857              : 
     858            4 :     case PACK_INDEX_TYPE:
     859            4 :       dump_type (pp, PACK_INDEX_PACK (t), flags);
     860            4 :       pp_cxx_left_bracket (pp);
     861            4 :       dump_expr (pp, PACK_INDEX_INDEX (t), flags & ~TFF_EXPR_IN_PARENS);
     862            4 :       pp_cxx_right_bracket (pp);
     863            4 :       break;
     864              : 
     865           74 :     case TYPE_ARGUMENT_PACK:
     866           74 :       dump_template_argument (pp, t, flags);
     867           74 :       break;
     868              : 
     869          798 :     case DECLTYPE_TYPE:
     870          798 :       pp_cxx_ws_string (pp, "decltype");
     871          798 :       pp_cxx_whitespace (pp);
     872          798 :       pp_cxx_left_paren (pp);
     873          798 :       dump_expr (pp, DECLTYPE_TYPE_EXPR (t), flags & ~TFF_EXPR_IN_PARENS);
     874          798 :       pp_cxx_right_paren (pp);
     875          798 :       break;
     876              : 
     877       130705 :     case NULLPTR_TYPE:
     878       130705 :       pp_cxx_ws_string (pp, "std::nullptr_t");
     879       130705 :       pp_c_type_qualifier_list (pp, t);
     880       130705 :       break;
     881              : 
     882         3552 :     case META_TYPE:
     883         3552 :       pp_cxx_ws_string (pp, "std::meta::info");
     884         3552 :       pp_c_type_qualifier_list (pp, t);
     885         3552 :       break;
     886              : 
     887           24 :     case SPLICE_SCOPE:
     888           24 :       dump_expr (pp, SPLICE_SCOPE_EXPR (t), flags & ~TFF_EXPR_IN_PARENS);
     889           24 :       break;
     890              : 
     891            0 :     default:
     892            0 :       pp_unsupported_tree (pp, t);
     893              :       /* Fall through.  */
     894              : 
     895           29 :     case ERROR_MARK:
     896           29 :       pp_string (pp, M_("<type error>"));
     897           29 :       break;
     898              :     }
     899              : }
     900              : 
     901              : /* Dump a TYPENAME_TYPE. We need to notice when the context is itself
     902              :    a TYPENAME_TYPE.  */
     903              : 
     904              : static void
     905         3980 : dump_typename (cxx_pretty_printer *pp, tree t, int flags)
     906              : {
     907         3980 :   tree ctx = TYPE_CONTEXT (t);
     908              : 
     909         3980 :   if (TREE_CODE (ctx) == TYPENAME_TYPE)
     910          567 :     dump_typename (pp, ctx, flags);
     911              :   else
     912         3413 :     dump_type (pp, ctx, flags & ~TFF_CLASS_KEY_OR_ENUM);
     913         3980 :   pp_cxx_colon_colon (pp);
     914         3980 :   dump_decl (pp, TYPENAME_TYPE_FULLNAME (t), flags);
     915         3980 : }
     916              : 
     917              : /* Return the name of the supplied aggregate, or enumeral type.  */
     918              : 
     919              : const char *
     920    138614531 : class_key_or_enum_as_string (tree t)
     921              : {
     922    138614531 :   if (TREE_CODE (t) == ENUMERAL_TYPE)
     923              :     {
     924      2629328 :       if (SCOPED_ENUM_P (t))
     925              :         return "enum class";
     926              :       else
     927      1207317 :         return "enum";
     928              :     }
     929    135985203 :   else if (TREE_CODE (t) == UNION_TYPE)
     930              :     return "union";
     931    135277511 :   else if (TYPE_LANG_SPECIFIC (t) && CLASSTYPE_DECLARED_CLASS (t))
     932     37067906 :     return "class";
     933              :   else
     934              :     return "struct";
     935              : }
     936              : 
     937              : /* Disable warnings about missing quoting in GCC diagnostics for
     938              :    the pp_verbatim call.  Their format strings deliberately don't
     939              :    follow GCC diagnostic conventions.  */
     940              : #if __GNUC__ >= 10
     941              : #pragma GCC diagnostic push
     942              : #pragma GCC diagnostic ignored "-Wformat-diag"
     943              : #endif
     944              : 
     945              : /* Print out a class declaration T under the control of FLAGS,
     946              :    in the form `class foo'.  */
     947              : 
     948              : static void
     949    138614414 : dump_aggr_type (cxx_pretty_printer *pp, tree t, int flags)
     950              : {
     951    138614414 :   const char *variety = class_key_or_enum_as_string (t);
     952    138614414 :   int typdef = 0;
     953    138614414 :   int tmplate = 0;
     954              : 
     955    138614414 :   pp_cxx_cv_qualifier_seq (pp, t);
     956              : 
     957    138614414 :   if (flags & TFF_CLASS_KEY_OR_ENUM)
     958        12785 :     pp_cxx_ws_string (pp, variety);
     959              : 
     960    138614414 :   tree decl = TYPE_NAME (t);
     961              : 
     962    138614414 :   if (decl)
     963              :     {
     964    138614414 :       typdef = (!DECL_ARTIFICIAL (decl)
     965              :                 /* An alias specialization is not considered to be a
     966              :                    typedef.  */
     967    138614414 :                 && !alias_template_specialization_p (t, nt_opaque));
     968              : 
     969       344423 :       if ((typdef
     970       344423 :            && ((flags & TFF_CHASE_TYPEDEF)
     971       344423 :                || (!flag_pretty_templates && DECL_LANG_SPECIFIC (decl)
     972            0 :                    && DECL_TEMPLATE_INFO (decl))))
     973    138614414 :           || DECL_SELF_REFERENCE_P (decl))
     974              :         {
     975            0 :           t = TYPE_MAIN_VARIANT (t);
     976            0 :           decl = TYPE_NAME (t);
     977            0 :           typdef = 0;
     978              :         }
     979              : 
     980    138269991 :       tmplate = !typdef && TREE_CODE (t) != ENUMERAL_TYPE
     981    135640774 :                 && TYPE_LANG_SPECIFIC (t) && CLASSTYPE_TEMPLATE_INFO (t)
     982    233164634 :                 && (TREE_CODE (CLASSTYPE_TI_TEMPLATE (t)) != TEMPLATE_DECL
     983     94550220 :                     || PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t)));
     984              : 
     985    138614414 :       if (! (flags & TFF_UNQUALIFIED_NAME))
     986     88626392 :         dump_scope (pp, CP_DECL_CONTEXT (decl), flags | TFF_SCOPE);
     987    138614414 :       flags &= ~TFF_UNQUALIFIED_NAME;
     988    138614414 :       if (tmplate)
     989              :         {
     990              :           /* Because the template names are mangled, we have to locate
     991              :              the most general template, and use that name.  */
     992     92358685 :           tree tpl = TYPE_TI_TEMPLATE (t);
     993              : 
     994     93058179 :           while (DECL_TEMPLATE_INFO (tpl))
     995       699494 :             tpl = DECL_TI_TEMPLATE (tpl);
     996              :           decl = tpl;
     997              :         }
     998              :     }
     999              : 
    1000    273891738 :   if (LAMBDA_TYPE_P (t))
    1001              :     {
    1002              :       /* A lambda's "type" is essentially its signature.  */
    1003       589968 :       pp_string (pp, M_("<lambda"));
    1004       589968 :       tree const fn = lambda_function (t);
    1005       589968 :       if (fn)
    1006              :         {
    1007       589947 :           int const parm_flags
    1008       589947 :             = DECL_XOBJ_MEMBER_FUNCTION_P (fn) ? TFF_XOBJ_FUNC | flags
    1009          277 :                                                : flags;
    1010       589947 :           dump_parameters (pp, FUNCTION_FIRST_USER_PARMTYPE (fn), parm_flags);
    1011              :         }
    1012       589968 :       pp_greater (pp);
    1013              :     }
    1014    138024446 :   else if (!decl || IDENTIFIER_ANON_P (DECL_NAME (decl)))
    1015              :     {
    1016         1966 :       if (flags & TFF_CLASS_KEY_OR_ENUM)
    1017          214 :         pp_string (pp, M_("<unnamed>"));
    1018              :       else
    1019         1752 :         pp_printf (pp, M_("<unnamed %s>"), variety);
    1020              :     }
    1021              :   else
    1022    138022480 :     pp_cxx_tree_identifier (pp, DECL_NAME (decl));
    1023              : 
    1024    138614414 :   dump_module_suffix (pp, decl);
    1025              : 
    1026    138614414 :   if (tmplate)
    1027     92358685 :     dump_template_parms (pp, TYPE_TEMPLATE_INFO (t),
    1028     92358685 :                          !CLASSTYPE_USE_TEMPLATE (t),
    1029              :                          flags & ~TFF_TEMPLATE_HEADER);
    1030    138614414 : }
    1031              : 
    1032              : #if __GNUC__ >= 10
    1033              : #pragma GCC diagnostic pop
    1034              : #endif
    1035              : 
    1036              : /* Dump into the obstack the initial part of the output for a given type.
    1037              :    This is necessary when dealing with things like functions returning
    1038              :    functions.  Examples:
    1039              : 
    1040              :    return type of `int (* fee ())()': pointer -> function -> int.  Both
    1041              :    pointer (and reference and offset) and function (and member) types must
    1042              :    deal with prefix and suffix.
    1043              : 
    1044              :    Arrays must also do this for DECL nodes, like int a[], and for things like
    1045              :    int *[]&.  */
    1046              : 
    1047              : static void
    1048     59435477 : dump_type_prefix (cxx_pretty_printer *pp, tree t, int flags)
    1049              : {
    1050     60732438 :   if (TYPE_PTRMEMFUNC_P (t))
    1051              :     {
    1052       178710 :       t = TYPE_PTRMEMFUNC_FN_TYPE (t);
    1053       178710 :       goto offset_type;
    1054              :     }
    1055              : 
    1056     60553728 :   switch (TREE_CODE (t))
    1057              :     {
    1058     30435095 :     case POINTER_TYPE:
    1059     30435095 :     case REFERENCE_TYPE:
    1060     30435095 :       {
    1061     30435095 :         tree sub = TREE_TYPE (t);
    1062              : 
    1063     30435095 :         dump_type_prefix (pp, sub, flags);
    1064     30435095 :         if (TREE_CODE (sub) == ARRAY_TYPE
    1065     30256716 :             || TREE_CODE (sub) == FUNCTION_TYPE)
    1066              :           {
    1067       456919 :             pp_cxx_whitespace (pp);
    1068       456919 :             pp_cxx_left_paren (pp);
    1069              :             /* If we're dealing with the GNU form of attributes, print this:
    1070              :                  void (__attribute__((noreturn)) *f) ();
    1071              :                If it is the standard [[]] attribute, we'll print the attribute
    1072              :                in dump_type_suffix.  */
    1073       456919 :             if (!cxx11_attribute_p (TYPE_ATTRIBUTES (sub)))
    1074       456914 :               pp_c_attributes_display (pp, TYPE_ATTRIBUTES (sub));
    1075              :           }
    1076     30435095 :         if (TYPE_PTR_P (t))
    1077     16668085 :           pp_star (pp);
    1078     13767010 :         else if (TYPE_REF_P (t))
    1079              :           {
    1080     13767010 :             if (TYPE_REF_IS_RVALUE (t))
    1081      2052178 :               pp_ampersand_ampersand (pp);
    1082              :             else
    1083     11714832 :               pp_ampersand (pp);
    1084              :           }
    1085     30435095 :         pp->set_padding (pp_before);
    1086     30435095 :         pp_cxx_cv_qualifier_seq (pp, t);
    1087              :       }
    1088     30435095 :       break;
    1089              : 
    1090       189142 :     case OFFSET_TYPE:
    1091       189142 :     offset_type:
    1092       189142 :       dump_type_prefix (pp, TREE_TYPE (t), flags);
    1093       189142 :       if (TREE_CODE (t) == OFFSET_TYPE) /* pmfs deal with this in d_t_p */
    1094              :         {
    1095        10432 :           pp_maybe_space (pp);
    1096        10432 :           if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE)
    1097          863 :              pp_cxx_left_paren (pp);
    1098        10432 :           dump_type (pp, TYPE_OFFSET_BASETYPE (t), flags);
    1099        10432 :           pp_cxx_colon_colon (pp);
    1100              :         }
    1101       189142 :       pp_cxx_star (pp);
    1102       189142 :       pp_cxx_cv_qualifier_seq (pp, t);
    1103       189142 :       pp->set_padding (pp_before);
    1104       189142 :       break;
    1105              : 
    1106              :       /* This can be reached without a pointer when dealing with
    1107              :          templates, e.g. std::is_function.  */
    1108       520103 :     case FUNCTION_TYPE:
    1109       520103 :       dump_type_prefix (pp, TREE_TYPE (t), flags);
    1110       520103 :       break;
    1111              : 
    1112       178872 :     case METHOD_TYPE:
    1113       178872 :       dump_type_prefix (pp, TREE_TYPE (t), flags);
    1114       178872 :       pp_maybe_space (pp);
    1115       178872 :       pp_cxx_left_paren (pp);
    1116       178872 :       dump_aggr_type (pp, TYPE_METHOD_BASETYPE (t), flags);
    1117       178872 :       pp_cxx_colon_colon (pp);
    1118       178872 :       break;
    1119              : 
    1120       776858 :     case ARRAY_TYPE:
    1121       776858 :       dump_type_prefix (pp, TREE_TYPE (t), flags);
    1122       776858 :       break;
    1123              : 
    1124     28632337 :     case ENUMERAL_TYPE:
    1125     28632337 :     case IDENTIFIER_NODE:
    1126     28632337 :     case INTEGER_TYPE:
    1127     28632337 :     case BOOLEAN_TYPE:
    1128     28632337 :     case REAL_TYPE:
    1129     28632337 :     case RECORD_TYPE:
    1130     28632337 :     case TEMPLATE_TYPE_PARM:
    1131     28632337 :     case TEMPLATE_TEMPLATE_PARM:
    1132     28632337 :     case BOUND_TEMPLATE_TEMPLATE_PARM:
    1133     28632337 :     case TREE_LIST:
    1134     28632337 :     case TYPE_DECL:
    1135     28632337 :     case TREE_VEC:
    1136     28632337 :     case UNION_TYPE:
    1137     28632337 :     case LANG_TYPE:
    1138     28632337 :     case VOID_TYPE:
    1139     28632337 :     case OPAQUE_TYPE:
    1140     28632337 :     case TYPENAME_TYPE:
    1141     28632337 :     case COMPLEX_TYPE:
    1142     28632337 :     case VECTOR_TYPE:
    1143     28632337 :     case TYPEOF_TYPE:
    1144     28632337 :     case TRAIT_TYPE:
    1145     28632337 :     case DECLTYPE_TYPE:
    1146     28632337 :     case TYPE_PACK_EXPANSION:
    1147     28632337 :     case FIXED_POINT_TYPE:
    1148     28632337 :     case NULLPTR_TYPE:
    1149     28632337 :     case PACK_INDEX_TYPE:
    1150     28632337 :     case META_TYPE:
    1151     28632337 :     case SPLICE_SCOPE:
    1152     28632337 :       dump_type (pp, t, flags);
    1153     28632337 :       pp->set_padding (pp_before);
    1154     28632337 :       break;
    1155              : 
    1156            0 :     default:
    1157            0 :       pp_unsupported_tree (pp, t);
    1158              :       /* fall through.  */
    1159           31 :     case ERROR_MARK:
    1160           31 :       pp_string (pp, M_("<typeprefixerror>"));
    1161           31 :       break;
    1162              :     }
    1163     59435477 : }
    1164              : 
    1165              : /* Dump the suffix of type T, under control of FLAGS.  This is the part
    1166              :    which appears after the identifier (or function parms).  */
    1167              : 
    1168              : static void
    1169     28632745 : dump_type_suffix (cxx_pretty_printer *pp, tree t, int flags)
    1170              : {
    1171     60732815 :   if (TYPE_PTRMEMFUNC_P (t))
    1172       178710 :     t = TYPE_PTRMEMFUNC_FN_TYPE (t);
    1173              : 
    1174     60732815 :   switch (TREE_CODE (t))
    1175              :     {
    1176     30624237 :     case POINTER_TYPE:
    1177     30624237 :     case REFERENCE_TYPE:
    1178     30624237 :     case OFFSET_TYPE:
    1179     30624237 :       if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE
    1180     30624237 :           || TREE_CODE (TREE_TYPE (t)) == FUNCTION_TYPE)
    1181       457782 :         pp_cxx_right_paren (pp);
    1182     30624237 :       if (TREE_CODE (t) == POINTER_TYPE)
    1183     16846795 :         flags |= TFF_POINTER;
    1184     30624237 :       dump_type_suffix (pp, TREE_TYPE (t), flags);
    1185     30624237 :       break;
    1186              : 
    1187       698975 :     case FUNCTION_TYPE:
    1188       698975 :     case METHOD_TYPE:
    1189       698975 :       {
    1190       698975 :         tree arg;
    1191       698975 :         if (TREE_CODE (t) == METHOD_TYPE)
    1192              :           /* Can only be reached through a pointer.  */
    1193       178872 :           pp_cxx_right_paren (pp);
    1194       698975 :         arg = TYPE_ARG_TYPES (t);
    1195       698975 :         if (TREE_CODE (t) == METHOD_TYPE)
    1196       178872 :           arg = TREE_CHAIN (arg);
    1197              : 
    1198              :         /* Function pointers don't have default args.  Not in standard C++,
    1199              :            anyway; they may in g++, but we'll just pretend otherwise.  */
    1200       698975 :         dump_parameters (pp, arg, flags & ~TFF_FUNCTION_DEFAULT_ARGUMENTS);
    1201              : 
    1202       698975 :         pp->set_padding (pp_before);
    1203      1041798 :         pp_cxx_cv_qualifiers (pp, type_memfn_quals (t),
    1204              :                               TREE_CODE (t) == FUNCTION_TYPE
    1205              :                               && (flags & TFF_POINTER));
    1206       698975 :         dump_ref_qualifier (pp, t, flags);
    1207       698975 :         if (tx_safe_fn_type_p (t))
    1208           19 :           pp_cxx_ws_string (pp, "transaction_safe");
    1209       698975 :         dump_exception_spec (pp, TYPE_RAISES_EXCEPTIONS (t), flags);
    1210              :         /* If this is the standard [[]] attribute, print
    1211              :              void (*)() [[noreturn]];  */
    1212       698975 :         if (cxx11_attribute_p (TYPE_ATTRIBUTES (t)))
    1213              :           {
    1214            2 :             pp_space (pp);
    1215            2 :             pp_c_attributes_display (pp, TYPE_ATTRIBUTES (t));
    1216            2 :             pp->set_padding (pp_before);
    1217              :           }
    1218       698975 :         dump_type_suffix (pp, TREE_TYPE (t), flags);
    1219       698975 :         break;
    1220              :       }
    1221              : 
    1222       776858 :     case ARRAY_TYPE:
    1223       776858 :       pp_maybe_space (pp);
    1224       776858 :       pp_cxx_left_bracket (pp);
    1225       776858 :       if (tree dtype = TYPE_DOMAIN (t))
    1226              :         {
    1227       129766 :           tree max = TYPE_MAX_VALUE (dtype);
    1228              :           /* Zero-length arrays have a null upper bound in C and SIZE_MAX
    1229              :              in C++.  Handle both since the type might be constructed by
    1230              :              the middle end and end up here as a result of a warning (see
    1231              :              PR c++/97201).  */
    1232       129766 :           if (!max || integer_all_onesp (max))
    1233          651 :             pp_character (pp, '0');
    1234       129115 :           else if (tree_fits_shwi_p (max))
    1235       128557 :             pp_wide_integer (pp, tree_to_shwi (max) + 1);
    1236              :           else
    1237              :             {
    1238          558 :               STRIP_NOPS (max);
    1239          558 :               if (TREE_CODE (max) == SAVE_EXPR)
    1240            0 :                 max = TREE_OPERAND (max, 0);
    1241          558 :               if (TREE_CODE (max) == MINUS_EXPR
    1242          558 :                   || TREE_CODE (max) == PLUS_EXPR)
    1243              :                 {
    1244          486 :                   max = TREE_OPERAND (max, 0);
    1245          874 :                   while (CONVERT_EXPR_P (max))
    1246          388 :                     max = TREE_OPERAND (max, 0);
    1247              :                 }
    1248              :               else
    1249           72 :                 max = fold_build2_loc (input_location,
    1250              :                                        PLUS_EXPR, dtype, max,
    1251              :                                        build_int_cst (dtype, 1));
    1252          558 :               dump_expr (pp, max, flags & ~TFF_EXPR_IN_PARENS);
    1253              :             }
    1254              :         }
    1255       776858 :       pp_cxx_right_bracket (pp);
    1256       776858 :       dump_type_suffix (pp, TREE_TYPE (t), flags);
    1257       776858 :       break;
    1258              : 
    1259              :     case ENUMERAL_TYPE:
    1260              :     case IDENTIFIER_NODE:
    1261              :     case INTEGER_TYPE:
    1262              :     case BOOLEAN_TYPE:
    1263              :     case REAL_TYPE:
    1264              :     case RECORD_TYPE:
    1265              :     case TEMPLATE_TYPE_PARM:
    1266              :     case TEMPLATE_TEMPLATE_PARM:
    1267              :     case BOUND_TEMPLATE_TEMPLATE_PARM:
    1268              :     case TREE_LIST:
    1269              :     case TYPE_DECL:
    1270              :     case TREE_VEC:
    1271              :     case UNION_TYPE:
    1272              :     case LANG_TYPE:
    1273              :     case VOID_TYPE:
    1274              :     case OPAQUE_TYPE:
    1275              :     case TYPENAME_TYPE:
    1276              :     case COMPLEX_TYPE:
    1277              :     case VECTOR_TYPE:
    1278              :     case TYPEOF_TYPE:
    1279              :     case TRAIT_TYPE:
    1280              :     case DECLTYPE_TYPE:
    1281              :     case TYPE_PACK_EXPANSION:
    1282              :     case FIXED_POINT_TYPE:
    1283              :     case NULLPTR_TYPE:
    1284              :     case PACK_INDEX_TYPE:
    1285              :     case META_TYPE:
    1286              :     case SPLICE_SCOPE:
    1287              :       break;
    1288              : 
    1289            0 :     default:
    1290            0 :       pp_unsupported_tree (pp, t);
    1291              :     case ERROR_MARK:
    1292              :       /* Don't mark it here, we should have already done in
    1293              :          dump_type_prefix.  */
    1294              :       break;
    1295              :     }
    1296     28632745 : }
    1297              : 
    1298              : static void
    1299           69 : dump_global_iord (cxx_pretty_printer *pp, tree t)
    1300              : {
    1301           69 :   const char *p = NULL;
    1302              : 
    1303           69 :   if (DECL_GLOBAL_CTOR_P (t))
    1304           69 :     p = M_("(static initializers for %s)");
    1305            0 :   else if (DECL_GLOBAL_DTOR_P (t))
    1306            0 :     p = M_("(static destructors for %s)");
    1307              :   else
    1308            0 :     gcc_unreachable ();
    1309              : 
    1310           69 :   pp_printf (pp, p, DECL_SOURCE_FILE (t));
    1311           69 : }
    1312              : 
    1313              : /* Write a representation of OpenMP "declare mapper" T to PP in a manner
    1314              :    suitable for error messages.  */
    1315              : 
    1316              : static void
    1317           40 : dump_omp_declare_mapper (cxx_pretty_printer *pp, tree t, int flags)
    1318              : {
    1319           40 :   pp_string (pp, "#pragma omp declare mapper");
    1320           40 :   if (t == NULL_TREE || t == error_mark_node)
    1321              :     return;
    1322           40 :   pp_space (pp);
    1323           40 :   pp_cxx_left_paren (pp);
    1324           40 :   if (OMP_DECLARE_MAPPER_ID (t))
    1325              :     {
    1326            8 :       pp_cxx_tree_identifier (pp, OMP_DECLARE_MAPPER_ID (t));
    1327            8 :       pp_colon (pp);
    1328              :     }
    1329           40 :   dump_type (pp, TREE_TYPE (t), flags);
    1330           40 :   pp_cxx_right_paren (pp);
    1331              : }
    1332              : 
    1333              : static void
    1334      1406027 : dump_simple_decl (cxx_pretty_printer *pp, tree t, tree type, int flags)
    1335              : {
    1336      1406027 :   if (VAR_P (t) && DECL_NTTP_OBJECT_P (t))
    1337        14121 :     return dump_expr (pp, DECL_INITIAL (t), flags);
    1338              : 
    1339      1391906 :   if (TREE_CODE (t) == VAR_DECL
    1340        29258 :       && DECL_LANG_SPECIFIC (t)
    1341      1399654 :       && DECL_OMP_DECLARE_MAPPER_P (t))
    1342           40 :     return dump_omp_declare_mapper (pp, DECL_INITIAL (t), flags);
    1343              : 
    1344      1391866 :   if (flags & TFF_DECL_SPECIFIERS)
    1345              :     {
    1346        28153 :       if (concept_definition_p (t))
    1347          377 :         pp_cxx_ws_string (pp, "concept");
    1348        27776 :       else if (VAR_P (t) && DECL_DECLARED_CONSTEXPR_P (t))
    1349          531 :         pp_cxx_ws_string (pp, "constexpr");
    1350              : 
    1351        28153 :       if (!concept_definition_p (t))
    1352        27776 :         dump_type_prefix (pp, type, flags & ~TFF_UNQUALIFIED_NAME);
    1353        28153 :       pp_maybe_space (pp);
    1354              :     }
    1355      1391866 :   if (! (flags & TFF_UNQUALIFIED_NAME)
    1356      1379998 :       && TREE_CODE (t) != PARM_DECL
    1357      2748726 :       && (!DECL_INITIAL (t)
    1358        11454 :           || TREE_CODE (DECL_INITIAL (t)) != TEMPLATE_PARM_INDEX))
    1359      1355208 :     dump_scope (pp, CP_DECL_CONTEXT (t), flags);
    1360      1391866 :   flags &= ~TFF_UNQUALIFIED_NAME;
    1361      1391866 :   if ((flags & TFF_DECL_SPECIFIERS)
    1362        28153 :       && DECL_TEMPLATE_PARM_P (t)
    1363      1399268 :       && TEMPLATE_PARM_PARAMETER_PACK (DECL_INITIAL (t)))
    1364          771 :     pp_string (pp, "...");
    1365      1391866 :   if (DECL_NAME (t))
    1366              :     {
    1367      1389881 :       if (TREE_CODE (t) == FIELD_DECL && DECL_NORMAL_CAPTURE_P (t))
    1368              :         {
    1369           12 :           pp_less (pp);
    1370           12 :           pp_string (pp, IDENTIFIER_POINTER (DECL_NAME (t)) + 2);
    1371           12 :           pp_string (pp, " capture>");
    1372              :         }
    1373              :       else
    1374      1389869 :         dump_decl (pp, DECL_NAME (t), flags);
    1375              :     }
    1376         1985 :   else if (DECL_DECOMPOSITION_P (t))
    1377           53 :     pp_string (pp, M_("<structured bindings>"));
    1378         1932 :   else if (TREE_CODE (t) == FIELD_DECL && DECL_FIELD_IS_BASE (t))
    1379          533 :     dump_type (pp, TREE_TYPE (t), flags);
    1380              :   else
    1381         1399 :     pp_string (pp, M_("<anonymous>"));
    1382              : 
    1383      1391866 :   dump_module_suffix (pp, t);
    1384              : 
    1385      1391866 :   if (flags & TFF_DECL_SPECIFIERS)
    1386        28153 :     dump_type_suffix (pp, type, flags);
    1387              : }
    1388              : 
    1389              : class colorize_guard
    1390              : {
    1391              :   bool colorize;
    1392              :   cxx_pretty_printer *pp;
    1393              : public:
    1394     97266023 :   colorize_guard (bool _colorize, cxx_pretty_printer *pp, const char *name)
    1395     97266023 :     : colorize (_colorize && pp_show_color (pp)), pp (pp)
    1396              :   {
    1397     97266023 :     pp_string (pp, colorize_start (colorize, name));
    1398     97266023 :   }
    1399     97266023 :   ~colorize_guard ()
    1400              :   {
    1401     97266023 :     pp_string (pp, colorize_stop (colorize));
    1402     97266023 :   }
    1403              : };
    1404              : 
    1405              : /* Print an IDENTIFIER_NODE that is the name of a declaration.  */
    1406              : 
    1407              : static void
    1408    196819883 : dump_decl_name (cxx_pretty_printer *pp, tree t, int flags)
    1409              : {
    1410              :   /* These special cases are duplicated here so that other functions
    1411              :      can feed identifiers to error and get them demangled properly.  */
    1412    196819883 :   if (IDENTIFIER_CONV_OP_P (t))
    1413              :     {
    1414           27 :       pp_cxx_ws_string (pp, "operator");
    1415              :       /* Not exactly IDENTIFIER_TYPE_VALUE.  */
    1416           27 :       dump_type (pp, TREE_TYPE (t), flags);
    1417           27 :       return;
    1418              :     }
    1419    196819856 :   if (dguide_name_p (t))
    1420              :     {
    1421          879 :       dump_decl (pp, CLASSTYPE_TI_TEMPLATE (TREE_TYPE (t)),
    1422              :                  TFF_UNQUALIFIED_NAME);
    1423          879 :       return;
    1424              :     }
    1425              : 
    1426    196818977 :   const char *str = IDENTIFIER_POINTER (t);
    1427    196818977 :   if (startswith (str, "_ZGR"))
    1428              :     {
    1429           15 :       pp_cxx_ws_string (pp, "<temporary>");
    1430           15 :       return;
    1431              :     }
    1432              : 
    1433    196818962 :   pp_cxx_tree_identifier (pp, t);
    1434              : }
    1435              : 
    1436              : /* Dump a human readable string for the decl T under control of FLAGS.  */
    1437              : 
    1438              : static void
    1439    337476370 : dump_decl (cxx_pretty_printer *pp, tree t, int flags)
    1440              : {
    1441    337477914 :   if (t == NULL_TREE)
    1442              :     return;
    1443              : 
    1444              :   /* If doing Objective-C++, give Objective-C a chance to demangle
    1445              :      Objective-C method names.  */
    1446    337477914 :   if (c_dialect_objc ())
    1447              :     {
    1448            0 :       const char *demangled = objc_maybe_printable_name (t, flags);
    1449            0 :       if (demangled)
    1450              :         {
    1451            0 :           pp_string (pp, demangled);
    1452            0 :           return;
    1453              :         }
    1454              :     }
    1455              : 
    1456    337477914 :   switch (TREE_CODE (t))
    1457              :     {
    1458     51356309 :     case TYPE_DECL:
    1459              :       /* Don't say 'typedef class A' */
    1460     51356309 :       if (DECL_ARTIFICIAL (t) && !DECL_SELF_REFERENCE_P (t))
    1461              :         {
    1462     50027005 :           if ((flags & TFF_DECL_SPECIFIERS)
    1463     50027005 :               && TREE_CODE (TREE_TYPE (t)) == TEMPLATE_TYPE_PARM)
    1464              :             {
    1465              :               /* Say `class T' not just `T'.  */
    1466           60 :               pp_cxx_ws_string (pp, "class");
    1467              : 
    1468              :               /* Emit the `...' for a parameter pack.  */
    1469           60 :               if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (t)))
    1470            3 :                 pp_cxx_ws_string (pp, "...");
    1471              :             }
    1472              : 
    1473     50027005 :           dump_type (pp, TREE_TYPE (t), flags);
    1474     50027005 :           break;
    1475              :         }
    1476      1329304 :       if (TYPE_DECL_ALIAS_P (t)
    1477      1329304 :           && (flags & TFF_DECL_SPECIFIERS
    1478       791648 :               || flags & TFF_CLASS_KEY_OR_ENUM))
    1479              :         {
    1480          502 :           pp_cxx_ws_string (pp, "using");
    1481          502 :           if (! (flags & TFF_UNQUALIFIED_NAME))
    1482          502 :             dump_scope (pp, CP_DECL_CONTEXT (t), flags);
    1483          502 :           dump_decl (pp, DECL_NAME (t), flags);
    1484          502 :           pp_cxx_whitespace (pp);
    1485          502 :           pp_cxx_ws_string (pp, "=");
    1486          502 :           pp_cxx_whitespace (pp);
    1487          526 :           dump_type (pp, (DECL_ORIGINAL_TYPE (t)
    1488           24 :                           ? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t)),
    1489              :                      flags);
    1490          502 :           break;
    1491              :         }
    1492      1328802 :       if ((flags & TFF_DECL_SPECIFIERS)
    1493      1328802 :           && !DECL_SELF_REFERENCE_P (t))
    1494        12068 :         pp_cxx_ws_string (pp, "typedef");
    1495      1340769 :       dump_simple_decl (pp, t, DECL_ORIGINAL_TYPE (t)
    1496        11967 :                         ? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t),
    1497              :                         flags);
    1498      1328802 :       break;
    1499              : 
    1500        43379 :     case VAR_DECL:
    1501        43379 :       if (DECL_NAME (t) && VTABLE_NAME_P (DECL_NAME (t)))
    1502              :         {
    1503            0 :           pp_string (pp, M_("vtable for "));
    1504            0 :           gcc_assert (TYPE_P (DECL_CONTEXT (t)));
    1505            0 :           dump_type (pp, DECL_CONTEXT (t), flags);
    1506            0 :           break;
    1507              :         }
    1508              :       /* Fall through.  */
    1509        74678 :     case FIELD_DECL:
    1510        74678 :     case PARM_DECL:
    1511        74678 :       dump_simple_decl (pp, t, TREE_TYPE (t), flags);
    1512              : 
    1513              :       /* Handle variable template specializations.  */
    1514        74678 :       if (VAR_P (t)
    1515        43379 :           && DECL_LANG_SPECIFIC (t)
    1516         7748 :           && DECL_TEMPLATE_INFO (t)
    1517        78193 :           && PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (t)))
    1518              :         {
    1519         2663 :           pp_cxx_begin_template_argument_list (pp);
    1520         2663 :           tree args = INNERMOST_TEMPLATE_ARGS (DECL_TI_ARGS (t));
    1521         2663 :           dump_template_argument_list (pp, args, flags);
    1522         2663 :           pp_cxx_end_template_argument_list (pp);
    1523              :         }
    1524              :       break;
    1525              : 
    1526            0 :     case RESULT_DECL:
    1527            0 :       pp_string (pp, M_("<return value> "));
    1528            0 :       dump_simple_decl (pp, t, TREE_TYPE (t), flags);
    1529            0 :       break;
    1530              : 
    1531     88582268 :     case NAMESPACE_DECL:
    1532     88582268 :       if (flags & TFF_DECL_SPECIFIERS)
    1533           93 :         pp->declaration (t);
    1534              :       else
    1535              :         {
    1536     88582175 :           if (! (flags & TFF_UNQUALIFIED_NAME))
    1537     88582154 :             dump_scope (pp, CP_DECL_CONTEXT (t), flags);
    1538     88582175 :           flags &= ~TFF_UNQUALIFIED_NAME;
    1539     88582175 :           if (DECL_NAME (t) == NULL_TREE)
    1540              :             {
    1541         8913 :               if (!(pp->flags & pp_c_flag_gnu_v3))
    1542         1605 :                 pp_cxx_ws_string (pp, M_("{anonymous}"));
    1543              :               else
    1544         7308 :                 pp_cxx_ws_string (pp, M_("(anonymous namespace)"));
    1545              :             }
    1546              :           else
    1547     88573262 :             pp_cxx_tree_identifier (pp, DECL_NAME (t));
    1548              :         }
    1549              :       break;
    1550              : 
    1551          974 :     case SCOPE_REF:
    1552          974 :       dump_type (pp, TREE_OPERAND (t, 0), flags);
    1553          974 :       pp_cxx_colon_colon (pp);
    1554          974 :       dump_decl (pp, TREE_OPERAND (t, 1), TFF_UNQUALIFIED_NAME);
    1555          974 :       break;
    1556              : 
    1557            0 :     case ARRAY_REF:
    1558            0 :       dump_decl (pp, TREE_OPERAND (t, 0), flags);
    1559            0 :       pp_cxx_left_bracket (pp);
    1560            0 :       dump_decl (pp, TREE_OPERAND (t, 1), flags);
    1561            0 :       pp_cxx_right_bracket (pp);
    1562            0 :       break;
    1563              : 
    1564              :       /* So that we can do dump_decl on an aggr type.  */
    1565         1866 :     case RECORD_TYPE:
    1566         1866 :     case UNION_TYPE:
    1567         1866 :     case ENUMERAL_TYPE:
    1568         1866 :       dump_type (pp, t, flags);
    1569         1866 :       break;
    1570              : 
    1571           48 :     case BIT_NOT_EXPR:
    1572              :       /* This is a pseudo destructor call which has not been folded into
    1573              :          a PSEUDO_DTOR_EXPR yet.  */
    1574           48 :       pp_cxx_complement (pp);
    1575           48 :       dump_type (pp, TREE_OPERAND (t, 0), flags);
    1576           48 :       break;
    1577              : 
    1578            0 :     case TYPE_EXPR:
    1579            0 :       gcc_unreachable ();
    1580    196819883 :       break;
    1581              : 
    1582    196819883 :     case IDENTIFIER_NODE:
    1583    196819883 :       dump_decl_name (pp, t, flags);
    1584    196819883 :       break;
    1585              : 
    1586          313 :     case OVERLOAD:
    1587          313 :       if (!OVL_SINGLE_P (t))
    1588              :         {
    1589          126 :           tree ctx = ovl_scope (t);
    1590          126 :           if (ctx != global_namespace)
    1591              :             {
    1592           73 :               if (TYPE_P (ctx))
    1593           59 :                 dump_type (pp, ctx, flags);
    1594              :               else
    1595           14 :                 dump_decl (pp, ctx, flags);
    1596           73 :               pp_cxx_colon_colon (pp);
    1597              :             }
    1598          252 :           dump_decl (pp, OVL_NAME (t), flags);
    1599          126 :           break;
    1600              :         }
    1601              : 
    1602              :       /* If there's only one function, dump that.  */
    1603    337477914 :       return dump_decl (pp, OVL_FIRST (t), flags);
    1604              : 
    1605       159150 :     case FUNCTION_DECL:
    1606       159150 :       if (! DECL_LANG_SPECIFIC (t))
    1607              :         {
    1608         1380 :           if (DECL_ABSTRACT_ORIGIN (t)
    1609         1380 :               && DECL_ABSTRACT_ORIGIN (t) != t)
    1610          151 :             dump_decl (pp, DECL_ABSTRACT_ORIGIN (t), flags);
    1611              :           else
    1612         1229 :             dump_function_name (pp, t, flags);
    1613              :         }
    1614       157770 :       else if (DECL_GLOBAL_CTOR_P (t) || DECL_GLOBAL_DTOR_P (t))
    1615           69 :         dump_global_iord (pp, t);
    1616              :       else
    1617       157701 :         dump_function_decl (pp, t, flags);
    1618              :       break;
    1619              : 
    1620       476858 :     case TEMPLATE_DECL:
    1621       476858 :       dump_template_decl (pp, t, flags);
    1622       476858 :       break;
    1623              : 
    1624          406 :     case CONCEPT_DECL:
    1625          406 :       dump_simple_decl (pp, t, TREE_TYPE (t), flags);
    1626          406 :       break;
    1627              : 
    1628         2335 :     case TEMPLATE_ID_EXPR:
    1629         2335 :       {
    1630         2335 :         tree name = TREE_OPERAND (t, 0);
    1631         2335 :         tree args = TREE_OPERAND (t, 1);
    1632              : 
    1633         2335 :         if (TREE_CODE (name) == SPLICE_EXPR)
    1634           14 :           dump_expr (pp, name, flags);
    1635              :         else
    1636              :           {
    1637         2872 :             if (!identifier_p (name))
    1638         1647 :               name = OVL_NAME (name);
    1639         2321 :             dump_decl (pp, name, flags);
    1640              :           }
    1641         2335 :         pp_cxx_begin_template_argument_list (pp);
    1642         2335 :         if (args == error_mark_node)
    1643            0 :           pp_string (pp, M_("<template arguments error>"));
    1644         2335 :         else if (args)
    1645         2239 :           dump_template_argument_list
    1646         2239 :             (pp, args, flags|TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
    1647         2335 :         pp_cxx_end_template_argument_list (pp);
    1648              :       }
    1649         2335 :       break;
    1650              : 
    1651          382 :     case LABEL_DECL:
    1652          382 :       if (DECL_NAME (t))
    1653          376 :         pp_cxx_tree_identifier (pp, DECL_NAME (t));
    1654              :       else
    1655            6 :         dump_generic_node (pp, t, 0, TDF_SLIM, false);
    1656              :       break;
    1657              : 
    1658         2183 :     case CONST_DECL:
    1659         4360 :       if ((TREE_TYPE (t) != NULL_TREE && NEXT_CODE (t) == ENUMERAL_TYPE)
    1660         3794 :           || (DECL_INITIAL (t) &&
    1661         1611 :               TREE_CODE (DECL_INITIAL (t)) == TEMPLATE_PARM_INDEX))
    1662         2141 :         dump_simple_decl (pp, t, TREE_TYPE (t), flags);
    1663           42 :       else if (DECL_NAME (t))
    1664           42 :         dump_decl (pp, DECL_NAME (t), flags);
    1665            0 :       else if (DECL_INITIAL (t))
    1666            0 :         dump_expr (pp, DECL_INITIAL (t), flags | TFF_EXPR_IN_PARENS);
    1667              :       else
    1668            0 :         pp_string (pp, M_("<enumerator>"));
    1669              :       break;
    1670              : 
    1671          137 :     case USING_DECL:
    1672          137 :       {
    1673          137 :         if (flags & TFF_DECL_SPECIFIERS)
    1674          131 :           pp_cxx_ws_string (pp, "using");
    1675          137 :         bool variadic = false;
    1676          137 :         if (!(flags & TFF_UNQUALIFIED_NAME))
    1677              :           {
    1678          137 :             tree scope = USING_DECL_SCOPE (t);
    1679          137 :             tree name = DECL_NAME (t);
    1680          137 :             if (PACK_EXPANSION_P (scope))
    1681              :               {
    1682            0 :                 scope = PACK_EXPANSION_PATTERN (scope);
    1683              :                 variadic = true;
    1684              :               }
    1685          137 :             if (identifier_p (name)
    1686          137 :                 && IDENTIFIER_CONV_OP_P (name)
    1687            0 :                 && PACK_EXPANSION_P (TREE_TYPE (name)))
    1688              :               {
    1689            0 :                 name = make_conv_op_name (PACK_EXPANSION_PATTERN
    1690              :                                           (TREE_TYPE (name)));
    1691            0 :                 variadic = true;
    1692              :               }
    1693          137 :             dump_type (pp, scope, flags);
    1694          137 :             pp_cxx_colon_colon (pp);
    1695              :           }
    1696          137 :         dump_decl (pp, DECL_NAME (t), flags);
    1697          137 :         if (variadic)
    1698            0 :           pp_cxx_ws_string (pp, "...");
    1699              :       }
    1700              :       break;
    1701              : 
    1702            0 :     case STATIC_ASSERT:
    1703            0 :       pp->declaration (t);
    1704            0 :       break;
    1705              : 
    1706           64 :     case BASELINK:
    1707           64 :       dump_decl (pp, BASELINK_FUNCTIONS (t), flags);
    1708           64 :       break;
    1709              : 
    1710            0 :     case TEMPLATE_TYPE_PARM:
    1711            0 :       if (flags & TFF_DECL_SPECIFIERS)
    1712            0 :         pp->declaration (t);
    1713              :       else
    1714            0 :         pp->type_id (t);
    1715              :       break;
    1716              : 
    1717            9 :     case UNBOUND_CLASS_TEMPLATE:
    1718            9 :     case TYPE_PACK_EXPANSION:
    1719            9 :     case TREE_BINFO:
    1720            9 :       dump_type (pp, t, flags);
    1721            9 :       break;
    1722              : 
    1723           30 :     default:
    1724           30 :       pp_unsupported_tree (pp, t);
    1725              :       /* Fall through.  */
    1726              : 
    1727           51 :     case ERROR_MARK:
    1728           51 :       pp_string (pp, M_("<declaration error>"));
    1729           51 :       break;
    1730              :     }
    1731              : }
    1732              : 
    1733              : /* Dump a template declaration T under control of FLAGS. This means the
    1734              :    'template <...> leaders plus the 'class X' or 'void fn(...)' part.  */
    1735              : 
    1736              : static void
    1737       478501 : dump_template_decl (cxx_pretty_printer *pp, tree t, int flags)
    1738              : {
    1739       478501 :   tree orig_parms = DECL_TEMPLATE_PARMS (t);
    1740       478501 :   tree parms;
    1741       478501 :   int i;
    1742              : 
    1743       478501 :   if (flags & TFF_TEMPLATE_HEADER)
    1744              :     {
    1745         8439 :       for (parms = orig_parms = nreverse (orig_parms);
    1746        17418 :            parms;
    1747         8979 :            parms = TREE_CHAIN (parms))
    1748              :         {
    1749         8979 :           tree inner_parms = INNERMOST_TEMPLATE_PARMS (parms);
    1750         8979 :           int len = TREE_VEC_LENGTH (inner_parms);
    1751              : 
    1752         8979 :           if (len == 0)
    1753              :             {
    1754              :               /* Skip over the dummy template levels of a template template
    1755              :                  parm.  */
    1756          298 :               gcc_assert (TREE_CODE (TREE_TYPE (t)) == TEMPLATE_TEMPLATE_PARM);
    1757          298 :               continue;
    1758              :             }
    1759              : 
    1760         8681 :           pp_cxx_ws_string (pp, "template");
    1761         8681 :           pp_cxx_begin_template_argument_list (pp);
    1762              : 
    1763              :           /* If we've shown the template prefix, we'd better show the
    1764              :              parameters' and decl's type too.  */
    1765         8681 :             flags |= TFF_DECL_SPECIFIERS;
    1766              : 
    1767        21349 :           for (i = 0; i < len; i++)
    1768              :             {
    1769        12668 :               if (i)
    1770         3987 :                 pp_separate_with_comma (pp);
    1771        12668 :               dump_template_parameter (pp, TREE_VEC_ELT (inner_parms, i),
    1772              :                                        flags);
    1773              :             }
    1774         8681 :           pp_cxx_end_template_argument_list (pp);
    1775         8681 :           pp_cxx_whitespace (pp);
    1776              :         }
    1777         8439 :       nreverse(orig_parms);
    1778              : 
    1779         8439 :       if (DECL_TEMPLATE_TEMPLATE_PARM_P (t))
    1780              :         {
    1781              :           /* Say `template<arg> class TT' not just `template<arg> TT'.  */
    1782          304 :           pp_cxx_ws_string (pp, "class");
    1783              : 
    1784              :           /* If this is a parameter pack, print the ellipsis.  */
    1785          304 :           if (TEMPLATE_TYPE_PARAMETER_PACK (TREE_TYPE (t)))
    1786           54 :             pp_cxx_ws_string (pp, "...");
    1787              :         }
    1788              : 
    1789              :       /* Only print the requirements if we're also printing
    1790              :          the template header.  */
    1791         8439 :       if (flag_concepts)
    1792         7473 :         if (tree ci = get_constraints (t))
    1793         2628 :           if (check_constraint_info (ci))
    1794         2628 :             if (tree reqs = CI_TEMPLATE_REQS (ci))
    1795              :               {
    1796         2161 :                 pp_cxx_requires_clause (pp, reqs);
    1797         2161 :                 pp_cxx_whitespace (pp);
    1798              :               }
    1799              :     }
    1800              : 
    1801              : 
    1802       478501 :   if (DECL_CLASS_TEMPLATE_P (t))
    1803       336961 :     dump_type (pp, TREE_TYPE (t),
    1804       336961 :                ((flags & ~TFF_CLASS_KEY_OR_ENUM) | TFF_TEMPLATE_NAME
    1805       336961 :                 | (flags & TFF_DECL_SPECIFIERS ? TFF_CLASS_KEY_OR_ENUM : 0)));
    1806       141540 :   else if (DECL_TEMPLATE_RESULT (t)
    1807       141540 :            && (VAR_P (DECL_TEMPLATE_RESULT (t))
    1808              :                /* Alias template.  */
    1809       141365 :                || DECL_TYPE_TEMPLATE_P (t)
    1810              :                /* Concept definition.  &*/
    1811         6919 :                || TREE_CODE (DECL_TEMPLATE_RESULT (t)) == CONCEPT_DECL))
    1812       135012 :     dump_decl (pp, DECL_TEMPLATE_RESULT (t), flags | TFF_TEMPLATE_NAME);
    1813              :   else
    1814              :     {
    1815         6528 :       gcc_assert (TREE_TYPE (t));
    1816         6528 :       switch (NEXT_CODE (t))
    1817              :         {
    1818         6528 :         case METHOD_TYPE:
    1819         6528 :         case FUNCTION_TYPE:
    1820         6528 :           dump_function_decl (pp, t, flags | TFF_TEMPLATE_NAME);
    1821         6528 :           break;
    1822            0 :         default:
    1823              :           /* This case can occur with some invalid code.  */
    1824            0 :           dump_type (pp, TREE_TYPE (t),
    1825            0 :                      (flags & ~TFF_CLASS_KEY_OR_ENUM) | TFF_TEMPLATE_NAME
    1826              :                      | (flags & TFF_DECL_SPECIFIERS
    1827            0 :                         ? TFF_CLASS_KEY_OR_ENUM : 0));
    1828              :         }
    1829              :     }
    1830       478501 : }
    1831              : 
    1832              : /* find_typenames looks through the type of the function template T
    1833              :    and returns a vec containing any typedefs, decltypes or TYPENAME_TYPEs
    1834              :    it finds.  */
    1835              : 
    1836              : struct find_typenames_t
    1837              : {
    1838              :   hash_set<tree> *p_set;
    1839              :   vec<tree, va_gc> *typenames;
    1840              : };
    1841              : 
    1842              : static tree
    1843       414916 : find_typenames_r (tree *tp, int *walk_subtrees, void *data)
    1844              : {
    1845       414916 :   struct find_typenames_t *d = (struct find_typenames_t *)data;
    1846       414916 :   tree mv = NULL_TREE;
    1847              : 
    1848       414916 :   if (TYPE_P (*tp) && is_typedef_decl (TYPE_NAME (*tp)))
    1849              :     /* Add the type of the typedef without any additional cv-quals.  */
    1850        11777 :     mv = TREE_TYPE (TYPE_NAME (*tp));
    1851       403139 :   else if (TREE_CODE (*tp) == TYPENAME_TYPE
    1852       402563 :            || TREE_CODE (*tp) == DECLTYPE_TYPE)
    1853              :     /* Add the typename without any cv-qualifiers.  */
    1854          751 :     mv = TYPE_MAIN_VARIANT (*tp);
    1855              : 
    1856       414916 :   if (PACK_EXPANSION_P (*tp))
    1857              :     {
    1858              :       /* Don't mess with parameter packs since we don't remember
    1859              :          the pack expansion context for a particular typename.  */
    1860         2490 :       *walk_subtrees = false;
    1861         2490 :       return NULL_TREE;
    1862              :     }
    1863              : 
    1864       412426 :   if (mv && (mv == *tp || !d->p_set->add (mv)))
    1865        12512 :     vec_safe_push (d->typenames, mv);
    1866              : 
    1867              :   return NULL_TREE;
    1868              : }
    1869              : 
    1870              : static vec<tree, va_gc> *
    1871        48080 : find_typenames (tree t)
    1872              : {
    1873        48080 :   struct find_typenames_t ft;
    1874        48080 :   ft.p_set = new hash_set<tree>;
    1875        48080 :   ft.typenames = NULL;
    1876        48080 :   cp_walk_tree (&TREE_TYPE (DECL_TEMPLATE_RESULT (t)),
    1877              :                 find_typenames_r, &ft, ft.p_set);
    1878        96160 :   delete ft.p_set;
    1879        48080 :   return ft.typenames;
    1880              : }
    1881              : 
    1882              : /* Output the "[with ...]" clause for a template instantiation T iff
    1883              :    TEMPLATE_PARMS, TEMPLATE_ARGS and FLAGS are suitable.  T may be NULL if
    1884              :    formatting a deduction/substitution diagnostic rather than an
    1885              :    instantiation.  */
    1886              : 
    1887              : static void
    1888       843814 : dump_substitution (cxx_pretty_printer *pp,
    1889              :                    tree t, tree template_parms, tree template_args,
    1890              :                    int flags)
    1891              : {
    1892       843814 :   if (template_parms != NULL_TREE && template_args != NULL_TREE
    1893        49723 :       && !(flags & TFF_NO_TEMPLATE_BINDINGS))
    1894              :     {
    1895        49723 :       vec<tree, va_gc> *typenames = t ? find_typenames (t) : NULL;
    1896        49723 :       dump_template_bindings (pp, template_parms, template_args, typenames);
    1897              :     }
    1898       843814 : }
    1899              : 
    1900              : /* Dump the lambda function FN including its 'mutable' qualifier and any
    1901              :    template bindings.  */
    1902              : 
    1903              : static void
    1904        99891 : dump_lambda_function (cxx_pretty_printer *pp,
    1905              :                       tree fn, tree template_parms, tree template_args,
    1906              :                       int flags)
    1907              : {
    1908              :   /* A lambda's signature is essentially its "type".  */
    1909        99891 :   dump_type (pp, DECL_CONTEXT (fn), flags);
    1910        99891 :   if (DECL_XOBJ_MEMBER_FUNCTION_P (fn))
    1911              :     /* Early escape.  */;
    1912        99852 :   else if (TREE_CODE (TREE_TYPE (fn)) == FUNCTION_TYPE)
    1913              :     {
    1914          358 :       pp->set_padding (pp_before);
    1915          358 :       pp_c_ws_string (pp, "static");
    1916              :     }
    1917        99494 :   else if (!(TYPE_QUALS (class_of_this_parm (TREE_TYPE (fn)))
    1918        99494 :              & TYPE_QUAL_CONST))
    1919              :     {
    1920           89 :       pp->set_padding (pp_before);
    1921           89 :       pp_c_ws_string (pp, "mutable");
    1922              :     }
    1923        99891 :   dump_substitution (pp, fn, template_parms, template_args, flags);
    1924        99891 : }
    1925              : 
    1926              : /* Pretty print a function decl. There are several ways we want to print a
    1927              :    function declaration. The TFF_ bits in FLAGS tells us how to behave.
    1928              :    As error can only apply the '#' flag once to give 0 and 1 for V, there
    1929              :    is %D which doesn't print the throw specs, and %F which does.  */
    1930              : 
    1931              : static void
    1932       859156 : dump_function_decl (cxx_pretty_printer *pp, tree t, int flags)
    1933              : {
    1934       859156 :   tree fntype;
    1935       859156 :   tree parmtypes;
    1936       859156 :   tree cname = NULL_TREE;
    1937       859156 :   tree template_args = NULL_TREE;
    1938       859156 :   tree template_parms = NULL_TREE;
    1939       859156 :   int show_return = flags & TFF_RETURN_TYPE || flags & TFF_DECL_SPECIFIERS;
    1940       859156 :   int do_outer_scope = ! (flags & TFF_UNQUALIFIED_NAME);
    1941       859156 :   tree exceptions;
    1942       859156 :   bool constexpr_p;
    1943       859156 :   tree ret = NULL_TREE;
    1944              : 
    1945       859156 :   int dump_function_name_flags = flags & ~TFF_UNQUALIFIED_NAME;
    1946       859156 :   flags = dump_function_name_flags & ~TFF_TEMPLATE_NAME;
    1947       859156 :   if (TREE_CODE (t) == TEMPLATE_DECL)
    1948         6528 :     t = DECL_TEMPLATE_RESULT (t);
    1949              : 
    1950              :   /* Save the exceptions, in case t is a specialization and we are
    1951              :      emitting an error about incompatible specifications.  */
    1952       859156 :   exceptions = TYPE_RAISES_EXCEPTIONS (TREE_TYPE (t));
    1953              : 
    1954              :   /* Likewise for the constexpr specifier, in case t is a specialization.  */
    1955       859156 :   constexpr_p = (DECL_DECLARED_CONSTEXPR_P (t)
    1956       859156 :                  && !decl_implicit_constexpr_p (t));
    1957              : 
    1958              :   /* Pretty print template instantiations only.  */
    1959      1273972 :   if (DECL_USE_TEMPLATE (t) && DECL_TEMPLATE_INFO (t)
    1960       414762 :       && !(flags & TFF_NO_TEMPLATE_BINDINGS)
    1961       907288 :       && flag_pretty_templates)
    1962              :     {
    1963        48105 :       tree tmpl;
    1964              : 
    1965        48105 :       template_args = DECL_TI_ARGS (t);
    1966        48105 :       tmpl = most_general_template (t);
    1967        48105 :       if (tmpl && TREE_CODE (tmpl) == TEMPLATE_DECL)
    1968              :         {
    1969        48080 :           template_parms = DECL_TEMPLATE_PARMS (tmpl);
    1970        48080 :           t = tmpl;
    1971              :         }
    1972              :     }
    1973              : 
    1974       962514 :   if (DECL_NAME (t) && LAMBDA_FUNCTION_P (t))
    1975        99891 :     return dump_lambda_function (pp, t, template_parms, template_args, flags);
    1976              : 
    1977       759265 :   fntype = TREE_TYPE (t);
    1978       759265 :   parmtypes = FUNCTION_FIRST_USER_PARMTYPE (t);
    1979              : 
    1980       759265 :   if (DECL_CLASS_SCOPE_P (t))
    1981       312915 :     cname = DECL_CONTEXT (t);
    1982              :   /* This is for partially instantiated template methods.  */
    1983       446350 :   else if (TREE_CODE (fntype) == METHOD_TYPE)
    1984            3 :     cname = TREE_TYPE (TREE_VALUE (parmtypes));
    1985              : 
    1986       759265 :   if (flags & TFF_DECL_SPECIFIERS)
    1987              :     {
    1988       143633 :       if (DECL_STATIC_FUNCTION_P (t))
    1989         3808 :         pp_cxx_ws_string (pp, "static");
    1990       139825 :       else if (DECL_VIRTUAL_P (t))
    1991         2717 :         pp_cxx_ws_string (pp, "virtual");
    1992              : 
    1993       143633 :       if (constexpr_p)
    1994              :         {
    1995       106792 :           if (DECL_IMMEDIATE_FUNCTION_P (t))
    1996          469 :             pp_cxx_ws_string (pp, "consteval");
    1997              :           else
    1998        52927 :             pp_cxx_ws_string (pp, "constexpr");
    1999              :         }
    2000              :     }
    2001              : 
    2002              :   /* Print the return type?  */
    2003       759265 :   if (show_return)
    2004       429991 :     show_return = (!DECL_CONV_FN_P (t)  && !DECL_CONSTRUCTOR_P (t)
    2005       276877 :                    && !DECL_DESTRUCTOR_P (t) && !deduction_guide_p (t));
    2006              :   if (show_return)
    2007              :     {
    2008       131448 :       ret = fndecl_declared_return_type (t);
    2009       131448 :       dump_type_prefix (pp, ret, flags);
    2010              :     }
    2011              : 
    2012              :   /* Print the function name.  */
    2013       759265 :   if (!do_outer_scope)
    2014              :     /* Nothing.  */;
    2015       759265 :   else if (cname)
    2016              :     {
    2017       312915 :       dump_type (pp, cname, flags);
    2018       312915 :       pp_cxx_colon_colon (pp);
    2019              :     }
    2020              :   else
    2021       446350 :     dump_scope (pp, CP_DECL_CONTEXT (t), flags);
    2022              : 
    2023              :   /* Name lookup for the rest of the function declarator is implicitly in the
    2024              :      scope of the function, so avoid printing redundant scope qualifiers.  */
    2025       759265 :   auto cds = make_temp_override (current_dump_scope, CP_DECL_CONTEXT (t));
    2026              : 
    2027       759265 :   dump_function_name (pp, t, dump_function_name_flags);
    2028              : 
    2029              :   /* By default we need no padding here, but if we emit target_version or
    2030              :      target_clones then we need some.  */
    2031       759265 :   pp->set_padding (pp_none);
    2032       759265 :   pp_cxx_function_target_version (pp, t);
    2033       759265 :   pp_cxx_maybe_whitespace (pp);
    2034       759265 :   pp_cxx_function_target_clones (pp, t);
    2035       759265 :   pp_cxx_maybe_whitespace (pp);
    2036              : 
    2037       759265 :   if (!(flags & TFF_NO_FUNCTION_ARGUMENTS))
    2038              :     {
    2039       742280 :       int const parm_flags
    2040       742280 :         = DECL_XOBJ_MEMBER_FUNCTION_P (t) ? TFF_XOBJ_FUNC | flags : flags;
    2041       742280 :       dump_parameters (pp, parmtypes, parm_flags);
    2042              : 
    2043       742280 :       if (TREE_CODE (fntype) == METHOD_TYPE)
    2044              :         {
    2045       304557 :           pp->set_padding (pp_before);
    2046       304557 :           pp_cxx_cv_qualifier_seq (pp, class_of_this_parm (fntype));
    2047       304557 :           dump_ref_qualifier (pp, fntype, flags);
    2048              :         }
    2049              : 
    2050       742280 :       if (tx_safe_fn_type_p (fntype))
    2051              :         {
    2052           18 :           pp->set_padding (pp_before);
    2053           18 :           pp_cxx_ws_string (pp, "transaction_safe");
    2054              :         }
    2055              : 
    2056       742280 :       if (flags & TFF_EXCEPTION_SPECIFICATION)
    2057              :         {
    2058          372 :           pp->set_padding (pp_before);
    2059          372 :           dump_exception_spec (pp, exceptions, flags);
    2060              :         }
    2061              : 
    2062       742280 :       if (show_return)
    2063       131448 :         dump_type_suffix (pp, ret, flags);
    2064       610832 :       else if (deduction_guide_p (t))
    2065              :         {
    2066          681 :           pp->set_padding (pp_before);
    2067          681 :           pp_cxx_ws_string (pp, "->");
    2068          681 :           dump_type (pp, TREE_TYPE (TREE_TYPE (t)), flags);
    2069              :         }
    2070              : 
    2071       742280 :       if (flag_concepts)
    2072       715095 :         if (tree ci = get_constraints (t))
    2073       354614 :           if (tree reqs = CI_DECLARATOR_REQS (ci))
    2074        17709 :             pp_cxx_requires_clause (pp, reqs);
    2075              : 
    2076       742280 :       dump_substitution (pp, t, template_parms, template_args, flags);
    2077              : 
    2078      1484560 :       if (tree base = DECL_INHERITED_CTOR_BASE (t))
    2079              :         {
    2080           71 :           pp_cxx_ws_string (pp, "[inherited from");
    2081           71 :           dump_type (pp, base, TFF_PLAIN_IDENTIFIER);
    2082           71 :           pp_character (pp, ']');
    2083              :         }
    2084              :     }
    2085        16985 :   else if (template_args)
    2086              :     {
    2087            0 :       bool need_comma = false;
    2088            0 :       int i;
    2089            0 :       pp_cxx_begin_template_argument_list (pp);
    2090            0 :       template_args = INNERMOST_TEMPLATE_ARGS (template_args);
    2091            0 :       for (i = 0; i < TREE_VEC_LENGTH (template_args); ++i)
    2092              :         {
    2093            0 :           tree arg = TREE_VEC_ELT (template_args, i);
    2094            0 :           if (need_comma)
    2095            0 :             pp_separate_with_comma (pp);
    2096            0 :           if (ARGUMENT_PACK_P (arg))
    2097            0 :             pp_cxx_left_brace (pp);
    2098            0 :           dump_template_argument (pp, arg, TFF_PLAIN_IDENTIFIER);
    2099            0 :           if (ARGUMENT_PACK_P (arg))
    2100            0 :             pp_cxx_right_brace (pp);
    2101            0 :           need_comma = true;
    2102              :         }
    2103            0 :       pp_cxx_end_template_argument_list (pp);
    2104              :     }
    2105       759265 : }
    2106              : 
    2107              : /* Print a parameter list. If this is for a member function, the
    2108              :    member object ptr (and any other hidden args) should have
    2109              :    already been removed.  */
    2110              : 
    2111              : static void
    2112      2031202 : dump_parameters (cxx_pretty_printer *pp, tree parmtypes, int flags)
    2113              : {
    2114      2031202 :   int first = 1;
    2115      2031202 :   flags &= ~TFF_SCOPE;
    2116      2031202 :   pp_cxx_left_paren (pp);
    2117              : 
    2118      6304358 :   for (first = 1; parmtypes != void_list_node;
    2119      2241954 :        parmtypes = TREE_CHAIN (parmtypes))
    2120              :     {
    2121      2244097 :       if (first && flags & TFF_XOBJ_FUNC)
    2122         1635 :         pp_string (pp, "this ");
    2123              :       if (!first)
    2124       952834 :         pp_separate_with_comma (pp);
    2125      2244097 :       first = 0;
    2126      2244097 :       if (!parmtypes)
    2127              :         {
    2128         2143 :           pp_cxx_ws_string (pp, "...");
    2129         2143 :           break;
    2130              :         }
    2131              : 
    2132      2241954 :       dump_type (pp, TREE_VALUE (parmtypes), flags);
    2133              : 
    2134      2241985 :       if ((flags & TFF_FUNCTION_DEFAULT_ARGUMENTS) && TREE_PURPOSE (parmtypes))
    2135              :         {
    2136            6 :           pp_cxx_whitespace (pp);
    2137            6 :           pp_equal (pp);
    2138            6 :           pp_cxx_whitespace (pp);
    2139            6 :           dump_expr (pp, TREE_PURPOSE (parmtypes), flags | TFF_EXPR_IN_PARENS);
    2140              :         }
    2141              :     }
    2142              : 
    2143      2031202 :   pp_cxx_right_paren (pp);
    2144      2031202 : }
    2145              : 
    2146              : /* Print ref-qualifier of a FUNCTION_TYPE or METHOD_TYPE. FLAGS are ignored. */
    2147              : 
    2148              : static void
    2149      1003532 : dump_ref_qualifier (cxx_pretty_printer *pp, tree t, int flags ATTRIBUTE_UNUSED)
    2150              : {
    2151      1003532 :   if (FUNCTION_REF_QUALIFIED (t))
    2152              :     {
    2153         1636 :       pp->set_padding (pp_before);
    2154         1636 :       if (FUNCTION_RVALUE_QUALIFIED (t))
    2155          466 :         pp_cxx_ws_string (pp, "&&");
    2156              :       else
    2157         1170 :         pp_cxx_ws_string (pp, "&");
    2158              :     }
    2159      1003532 : }
    2160              : 
    2161              : /* Print an exception specification. T is the exception specification.  */
    2162              : 
    2163              : static void
    2164       699414 : dump_exception_spec (cxx_pretty_printer *pp, tree t, int flags)
    2165              : {
    2166       706383 :   if (t && TREE_PURPOSE (t))
    2167              :     {
    2168         6871 :       pp_cxx_ws_string (pp, "noexcept");
    2169         6871 :       if (!integer_onep (TREE_PURPOSE (t)))
    2170              :         {
    2171          153 :           pp_cxx_whitespace (pp);
    2172          153 :           pp_cxx_left_paren (pp);
    2173          153 :           if (DEFERRED_NOEXCEPT_SPEC_P (t))
    2174           19 :             pp_cxx_ws_string (pp, "<uninstantiated>");
    2175              :           else
    2176          134 :             dump_expr (pp, TREE_PURPOSE (t), flags);
    2177          153 :           pp_cxx_right_paren (pp);
    2178              :         }
    2179              :     }
    2180       692543 :   else if (t)
    2181              :     {
    2182           98 :       pp_cxx_ws_string (pp, "throw");
    2183           98 :       pp_cxx_whitespace (pp);
    2184           98 :       pp_cxx_left_paren (pp);
    2185           98 :       if (TREE_VALUE (t) != NULL_TREE)
    2186           73 :         while (1)
    2187              :           {
    2188           61 :             dump_type (pp, TREE_VALUE (t), flags);
    2189           61 :             t = TREE_CHAIN (t);
    2190           61 :             if (!t)
    2191              :               break;
    2192           12 :             pp_separate_with_comma (pp);
    2193              :           }
    2194           98 :       pp_cxx_right_paren (pp);
    2195              :     }
    2196       699414 : }
    2197              : 
    2198              : /* Handle the function name for a FUNCTION_DECL node, grokking operators
    2199              :    and destructors properly.  */
    2200              : 
    2201              : static void
    2202     97266023 : dump_function_name (cxx_pretty_printer *pp, tree t, int flags)
    2203              : {
    2204              :   /* Only colorize when we're printing something before the name; in
    2205              :      particular, not when printing a CALL_EXPR.  */
    2206     97266023 :   bool colorize = flags & (TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE
    2207              :                            | TFF_TEMPLATE_HEADER);
    2208              : 
    2209     97266023 :   colorize_guard g (colorize, pp, "fnname");
    2210              : 
    2211     97266023 :   tree name = DECL_NAME (t);
    2212              : 
    2213              :   /* We can get here with a decl that was synthesized by language-
    2214              :      independent machinery (e.g. coverage.cc) in which case it won't
    2215              :      have a lang_specific structure attached and DECL_CONSTRUCTOR_P
    2216              :      will crash.  In this case it is safe just to print out the
    2217              :      literal name.  */
    2218     97266023 :   if (!DECL_LANG_SPECIFIC (t))
    2219              :     {
    2220         6163 :       pp_cxx_tree_identifier (pp, name);
    2221         6163 :       return;
    2222              :     }
    2223              : 
    2224     97259860 :   if (TREE_CODE (t) == TEMPLATE_DECL)
    2225        45975 :     t = DECL_TEMPLATE_RESULT (t);
    2226              : 
    2227              :   /* Don't let the user see __comp_ctor et al.  */
    2228     97259860 :   if (DECL_CONSTRUCTOR_P (t)
    2229     97259860 :       || DECL_DESTRUCTOR_P (t))
    2230              :     {
    2231     37883103 :       if (LAMBDA_TYPE_P (DECL_CONTEXT (t)))
    2232       268739 :         name = get_identifier ("<lambda>");
    2233     37376452 :       else if (TYPE_UNNAMED_P (DECL_CONTEXT (t)))
    2234          118 :         name = get_identifier ("<constructor>");
    2235              :       else
    2236     18688049 :         name = constructor_name (DECL_CONTEXT (t));
    2237              :     }
    2238              : 
    2239    194519720 :   if (DECL_DESTRUCTOR_P (t))
    2240              :     {
    2241      2367210 :       pp_cxx_complement (pp);
    2242      2367210 :       dump_decl (pp, name, TFF_PLAIN_IDENTIFIER);
    2243              :     }
    2244     94892650 :   else if (DECL_CONV_FN_P (t))
    2245              :     {
    2246              :       /* This cannot use the hack that the operator's return
    2247              :          type is stashed off of its name because it may be
    2248              :          used for error reporting.  In the case of conflicting
    2249              :          declarations, both will have the same name, yet
    2250              :          the types will be different, hence the TREE_TYPE field
    2251              :          of the first name will be clobbered by the second.  */
    2252      1583535 :       pp_cxx_ws_string (pp, "operator");
    2253      1583535 :       dump_type (pp, TREE_TYPE (TREE_TYPE (t)), flags);
    2254              :     }
    2255              :   else
    2256     93309115 :     dump_decl (pp, name, flags);
    2257              : 
    2258     97259860 :   dump_module_suffix (pp, t);
    2259              : 
    2260     97259860 :   if (DECL_TEMPLATE_INFO (t)
    2261     75133556 :       && !(flags & TFF_TEMPLATE_NAME)
    2262     75127351 :       && !DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (t)
    2263    172320523 :       && (TREE_CODE (DECL_TI_TEMPLATE (t)) != TEMPLATE_DECL
    2264     75060638 :           || PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (t))))
    2265       736941 :     dump_template_parms (pp, DECL_TEMPLATE_INFO (t), !DECL_USE_TEMPLATE (t),
    2266              :                          flags);
    2267     97266023 : }
    2268              : 
    2269              : /* Dump the template parameters from the template info INFO under control of
    2270              :    FLAGS. PRIMARY indicates whether this is a primary template decl, or
    2271              :    specialization (partial or complete). For partial specializations we show
    2272              :    the specialized parameter values. For a primary template we show no
    2273              :    decoration.  */
    2274              : 
    2275              : static void
    2276     93104811 : dump_template_parms (cxx_pretty_printer *pp, tree info,
    2277              :                      int primary, int flags)
    2278              : {
    2279    186209622 :   tree args = info ? TI_ARGS (info) : NULL_TREE;
    2280              : 
    2281     93104811 :   if (primary && flags & TFF_TEMPLATE_NAME)
    2282              :     return;
    2283     92767806 :   flags &= ~(TFF_CLASS_KEY_OR_ENUM | TFF_TEMPLATE_NAME);
    2284     92767806 :   pp_cxx_begin_template_argument_list (pp);
    2285              : 
    2286              :   /* Be careful only to print things when we have them, so as not
    2287              :      to crash producing error messages.  */
    2288     92767806 :   if (args && !primary)
    2289              :     {
    2290     92743732 :       int len, ix;
    2291     92743732 :       len = get_non_default_template_args_count (args, flags);
    2292              : 
    2293     92743732 :       args = INNERMOST_TEMPLATE_ARGS (args);
    2294    328158357 :       for (ix = 0; ix != len; ix++)
    2295              :         {
    2296    142670893 :           tree arg = TREE_VEC_ELT (args, ix);
    2297              : 
    2298              :           /* Only print a comma if we know there is an argument coming. In
    2299              :              the case of an empty template argument pack, no actual
    2300              :              argument will be printed.  */
    2301    142670893 :           if (ix
    2302    142670893 :               && (!ARGUMENT_PACK_P (arg)
    2303      3367432 :                   || TREE_VEC_LENGTH (ARGUMENT_PACK_ARGS (arg)) > 0))
    2304     49522215 :             pp_separate_with_comma (pp);
    2305              : 
    2306    142670893 :           if (!arg)
    2307            0 :             pp_string (pp, M_("<template parameter error>"));
    2308              :           else
    2309    142670893 :             dump_template_argument (pp, arg, flags);
    2310              :         }
    2311              :     }
    2312        24074 :   else if (primary)
    2313              :     {
    2314        24068 :       tree tpl = TI_TEMPLATE (info);
    2315        24068 :       tree parms = DECL_TEMPLATE_PARMS (tpl);
    2316        24068 :       int len, ix;
    2317              : 
    2318        24068 :       parms = TREE_CODE (parms) == TREE_LIST ? TREE_VALUE (parms) : NULL_TREE;
    2319        48136 :       len = parms ? TREE_VEC_LENGTH (parms) : 0;
    2320              : 
    2321        64785 :       for (ix = 0; ix != len; ix++)
    2322              :         {
    2323        40717 :           tree parm;
    2324              : 
    2325        40717 :           if (TREE_VEC_ELT (parms, ix) == error_mark_node)
    2326              :             {
    2327            0 :               pp_string (pp, M_("<template parameter error>"));
    2328            0 :               continue;
    2329              :             }
    2330              : 
    2331        40717 :           parm = TREE_VALUE (TREE_VEC_ELT (parms, ix));
    2332              : 
    2333        40717 :           if (ix)
    2334        16649 :             pp_separate_with_comma (pp);
    2335              : 
    2336        40717 :           dump_decl (pp, parm, flags & ~TFF_DECL_SPECIFIERS);
    2337              :         }
    2338              :     }
    2339     92767806 :   pp_cxx_end_template_argument_list (pp);
    2340              : }
    2341              : 
    2342              : /* Print out the arguments of CALL_EXPR T as a parenthesized list using
    2343              :    flags FLAGS.  Skip over the first argument if SKIPFIRST is true.  */
    2344              : 
    2345              : static void
    2346         7970 : dump_call_expr_args (cxx_pretty_printer *pp, tree t, int flags, bool skipfirst)
    2347              : {
    2348         7970 :   const int len = call_expr_nargs (t);
    2349              : 
    2350         7970 :   pp_cxx_left_paren (pp);
    2351        16477 :   for (int i = skipfirst; i < len; ++i)
    2352              :     {
    2353         8507 :       tree arg = get_nth_callarg (t, i);
    2354         8507 :       dump_expr (pp, arg, flags | TFF_EXPR_IN_PARENS);
    2355         8507 :       if (i + 1 < len)
    2356         2778 :         pp_separate_with_comma (pp);
    2357              :     }
    2358         7970 :   pp_cxx_right_paren (pp);
    2359         7970 : }
    2360              : 
    2361              : /* Print out a list of initializers (subr of dump_expr).  */
    2362              : 
    2363              : static void
    2364          216 : dump_expr_list (cxx_pretty_printer *pp, tree l, int flags)
    2365              : {
    2366          244 :   while (l)
    2367              :     {
    2368          134 :       dump_expr (pp, TREE_VALUE (l), flags | TFF_EXPR_IN_PARENS);
    2369          134 :       l = TREE_CHAIN (l);
    2370          134 :       if (l)
    2371           28 :         pp_separate_with_comma (pp);
    2372              :     }
    2373          216 : }
    2374              : 
    2375              : /* Print out a vector of initializers (subr of dump_expr).  */
    2376              : 
    2377              : static void
    2378         7729 : dump_expr_init_vec (cxx_pretty_printer *pp, vec<constructor_elt, va_gc> *v,
    2379              :                     int flags)
    2380              : {
    2381         7729 :   unsigned HOST_WIDE_INT idx;
    2382         7729 :   tree value;
    2383              : 
    2384        18911 :   FOR_EACH_CONSTRUCTOR_VALUE (v, idx, value)
    2385              :     {
    2386        11182 :       if (TREE_CODE (value) == RAW_DATA_CST)
    2387            0 :         for (unsigned i = 0; i < (unsigned) RAW_DATA_LENGTH (value); ++i)
    2388              :           {
    2389            0 :             if (TYPE_UNSIGNED (TREE_TYPE (value))
    2390            0 :                 || TYPE_PRECISION (TREE_TYPE (value)) > CHAR_BIT)
    2391            0 :               pp_decimal_int (pp, RAW_DATA_UCHAR_ELT (value, i));
    2392              :             else
    2393            0 :               pp_decimal_int (pp, RAW_DATA_SCHAR_ELT (value, i));
    2394            0 :             if (i == RAW_DATA_LENGTH (value) - 1U)
    2395              :               break;
    2396            0 :             else if (i == 9 && RAW_DATA_LENGTH (value) > 20)
    2397              :               {
    2398            0 :                 pp_string (pp, ", ..., ");
    2399            0 :                 i = RAW_DATA_LENGTH (value) - 11;
    2400              :               }
    2401              :             else
    2402            0 :               pp_separate_with_comma (pp);
    2403              :           }
    2404              :       else
    2405        11182 :         dump_expr (pp, value, flags | TFF_EXPR_IN_PARENS);
    2406        11182 :       if (idx != v->length () - 1)
    2407         3507 :         pp_separate_with_comma (pp);
    2408              :     }
    2409         7729 : }
    2410              : 
    2411              : 
    2412              : /* We've gotten an indirect REFERENCE (an OBJ_TYPE_REF) to a virtual
    2413              :    function.  Resolve it to a close relative -- in the sense of static
    2414              :    type -- variant being overridden.  That is close to what was written in
    2415              :    the source code.  Subroutine of dump_expr.  */
    2416              : 
    2417              : static tree
    2418          147 : resolve_virtual_fun_from_obj_type_ref (tree ref)
    2419              : {
    2420          147 :   tree obj_type = TREE_TYPE (OBJ_TYPE_REF_TOKEN (ref));
    2421          147 :   HOST_WIDE_INT index = tree_to_uhwi (OBJ_TYPE_REF_TOKEN (ref));
    2422          147 :   tree fun = BINFO_VIRTUALS (TYPE_BINFO (TREE_TYPE (obj_type)));
    2423          288 :   while (index)
    2424              :     {
    2425          141 :       fun = TREE_CHAIN (fun);
    2426          141 :       index -= (TARGET_VTABLE_USES_DESCRIPTORS
    2427              :                 ? TARGET_VTABLE_USES_DESCRIPTORS : 1);
    2428              :     }
    2429              : 
    2430          147 :   return BV_FN (fun);
    2431              : }
    2432              : 
    2433              : /* Print out an expression E under control of FLAGS.  */
    2434              : 
    2435              : static void
    2436     23631192 : dump_expr (cxx_pretty_printer *pp, tree t, int flags)
    2437              : {
    2438     23653237 :   tree op;
    2439              : 
    2440     23653237 :   if (t == 0)
    2441              :     return;
    2442              : 
    2443     23653193 :   if (STATEMENT_CLASS_P (t))
    2444              :     {
    2445           15 :       pp_cxx_ws_string (pp, M_("<statement>"));
    2446           15 :       return;
    2447              :     }
    2448              : 
    2449     23653178 :   switch (TREE_CODE (t))
    2450              :     {
    2451        69455 :     case VAR_DECL:
    2452        69455 :     case PARM_DECL:
    2453        69455 :     case FIELD_DECL:
    2454        69455 :     case CONST_DECL:
    2455        69455 :     case FUNCTION_DECL:
    2456        69455 :     case TEMPLATE_DECL:
    2457        69455 :     case NAMESPACE_DECL:
    2458        69455 :     case LABEL_DECL:
    2459        69455 :     case OVERLOAD:
    2460        69455 :     case TYPE_DECL:
    2461        69455 :     case USING_DECL:
    2462        69455 :     case IDENTIFIER_NODE:
    2463        69455 :       dump_decl (pp, t, ((flags & ~(TFF_DECL_SPECIFIERS|TFF_RETURN_TYPE
    2464              :                                     |TFF_TEMPLATE_HEADER))
    2465              :                          | TFF_NO_TEMPLATE_BINDINGS
    2466        69455 :                          | TFF_NO_FUNCTION_ARGUMENTS));
    2467        69455 :       break;
    2468              : 
    2469         6475 :     case SSA_NAME:
    2470         6475 :       if (SSA_NAME_VAR (t)
    2471         6403 :           && !DECL_ARTIFICIAL (SSA_NAME_VAR (t)))
    2472              :         dump_expr (pp, SSA_NAME_VAR (t), flags);
    2473              :       else
    2474           75 :         pp_cxx_ws_string (pp, M_("<unknown>"));
    2475              :       break;
    2476              : 
    2477     23511184 :     case VOID_CST:
    2478     23511184 :     case INTEGER_CST:
    2479     23511184 :     case REAL_CST:
    2480     23511184 :     case STRING_CST:
    2481     23511184 :     case COMPLEX_CST:
    2482     23511184 :       pp->constant (t);
    2483     23511184 :       break;
    2484              : 
    2485            0 :     case USERDEF_LITERAL:
    2486            0 :       pp_cxx_userdef_literal (pp, t);
    2487            0 :       break;
    2488              : 
    2489          115 :     case THROW_EXPR:
    2490              :       /* While waiting for caret diagnostics, avoid printing
    2491              :          __cxa_allocate_exception, __cxa_throw, and the like.  */
    2492          115 :       pp_cxx_ws_string (pp, M_("<throw-expression>"));
    2493          115 :       break;
    2494              : 
    2495          666 :     case PTRMEM_CST:
    2496          666 :       pp_ampersand (pp);
    2497          666 :       dump_type (pp, PTRMEM_CST_CLASS (t), flags);
    2498          666 :       pp_cxx_colon_colon (pp);
    2499          666 :       pp_cxx_tree_identifier (pp, DECL_NAME (PTRMEM_CST_MEMBER (t)));
    2500          666 :       break;
    2501              : 
    2502          791 :     case COMPOUND_EXPR:
    2503          791 :       pp_cxx_left_paren (pp);
    2504          791 :       dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    2505          791 :       pp_separate_with_comma (pp);
    2506          791 :       dump_expr (pp, TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
    2507          791 :       pp_cxx_right_paren (pp);
    2508          791 :       break;
    2509              : 
    2510           59 :     case COND_EXPR:
    2511           59 :     case VEC_COND_EXPR:
    2512           59 :       pp_cxx_left_paren (pp);
    2513           59 :       dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    2514           59 :       pp_string (pp, " ? ");
    2515           59 :       dump_expr (pp, TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
    2516           59 :       pp_string (pp, " : ");
    2517           59 :       dump_expr (pp, TREE_OPERAND (t, 2), flags | TFF_EXPR_IN_PARENS);
    2518           59 :       pp_cxx_right_paren (pp);
    2519           59 :       break;
    2520              : 
    2521          248 :     case SAVE_EXPR:
    2522          248 :       if (TREE_HAS_CONSTRUCTOR (t))
    2523              :         {
    2524            0 :           pp_cxx_ws_string (pp, "new");
    2525            0 :           pp_cxx_whitespace (pp);
    2526            0 :           dump_type (pp, TREE_TYPE (TREE_TYPE (t)), flags);
    2527              :         }
    2528              :       else
    2529          248 :         dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    2530              :       break;
    2531              : 
    2532         7970 :     case AGGR_INIT_EXPR:
    2533         7970 :     case CALL_EXPR:
    2534         7970 :       {
    2535         7970 :         tree fn = cp_get_callee (t);
    2536         7970 :         bool skipfirst = false;
    2537              : 
    2538              :         /* Deal with internal functions.  */
    2539         7970 :         if (fn == NULL_TREE)
    2540              :           {
    2541            3 :             pp_string (pp, internal_fn_name (CALL_EXPR_IFN (t)));
    2542            3 :             dump_call_expr_args (pp, t, flags, skipfirst);
    2543            3 :             break;
    2544              :           }
    2545              : 
    2546         7967 :         if (TREE_CODE (fn) == ADDR_EXPR)
    2547         7127 :           fn = TREE_OPERAND (fn, 0);
    2548              : 
    2549              :         /* Nobody is interested in seeing the guts of vcalls.  */
    2550         7967 :         if (TREE_CODE (fn) == OBJ_TYPE_REF)
    2551          141 :           fn = resolve_virtual_fun_from_obj_type_ref (fn);
    2552              : 
    2553         7967 :         if (TREE_TYPE (fn) != NULL_TREE
    2554         7755 :             && NEXT_CODE (fn) == METHOD_TYPE
    2555        10697 :             && call_expr_nargs (t))
    2556              :           {
    2557         2727 :             tree ob = get_nth_callarg (t, 0);
    2558         2727 :             if (is_dummy_object (ob))
    2559              :               /* Don't print dummy object.  */;
    2560         2036 :             else if (TREE_CODE (ob) == ADDR_EXPR)
    2561              :               {
    2562         1367 :                 dump_expr (pp, TREE_OPERAND (ob, 0),
    2563              :                            flags | TFF_EXPR_IN_PARENS);
    2564         1367 :                 pp_cxx_dot (pp);
    2565              :               }
    2566          669 :             else if (!is_this_parameter (ob))
    2567              :               {
    2568          669 :                 dump_expr (pp, ob, flags | TFF_EXPR_IN_PARENS);
    2569          669 :                 pp_cxx_arrow (pp);
    2570              :               }
    2571              :             skipfirst = true;
    2572              :           }
    2573         7967 :         if (flag_sanitize & SANITIZE_UNDEFINED
    2574         7967 :             && is_ubsan_builtin_p (fn))
    2575              :           {
    2576            0 :             pp_string (cxx_pp, M_("<ubsan routine call>"));
    2577            0 :             break;
    2578              :           }
    2579              : 
    2580         7967 :         if (TREE_CODE (fn) == FUNCTION_DECL
    2581         7302 :             && DECL_CONSTRUCTOR_P (fn)
    2582         8920 :             && is_dummy_object (get_nth_callarg (t, 0)))
    2583          691 :           dump_type (pp, DECL_CONTEXT (fn), flags);
    2584              :         else
    2585         7276 :           dump_expr (pp, fn, flags | TFF_EXPR_IN_PARENS);
    2586         7967 :         dump_call_expr_args (pp, t, flags, skipfirst);
    2587              :       }
    2588         7967 :       break;
    2589              : 
    2590         2194 :     case TARGET_EXPR:
    2591              :       /* Note that this only works for G++ target exprs.  If somebody
    2592              :          builds a general TARGET_EXPR, there's no way to represent that
    2593              :          it initializes anything other that the parameter slot for the
    2594              :          default argument.  Note we may have cleared out the first
    2595              :          operand in expand_expr, so don't go killing ourselves.  */
    2596         2194 :       if (TARGET_EXPR_INITIAL (t))
    2597         2194 :         dump_expr (pp, TARGET_EXPR_INITIAL (t), flags | TFF_EXPR_IN_PARENS);
    2598              :       break;
    2599              : 
    2600          310 :     case POINTER_PLUS_EXPR:
    2601          310 :       dump_binary_op (pp, "+", t, flags);
    2602          310 :       break;
    2603              : 
    2604            2 :     case POINTER_DIFF_EXPR:
    2605            2 :       dump_binary_op (pp, "-", t, flags);
    2606            2 :       break;
    2607              : 
    2608           24 :     case INIT_EXPR:
    2609           24 :     case MODIFY_EXPR:
    2610           24 :       dump_binary_op (pp, OVL_OP_INFO (true, NOP_EXPR)->name, t, flags);
    2611           24 :       break;
    2612              : 
    2613         1884 :     case PLUS_EXPR:
    2614         1884 :     case MINUS_EXPR:
    2615         1884 :     case MULT_EXPR:
    2616         1884 :     case TRUNC_DIV_EXPR:
    2617         1884 :     case TRUNC_MOD_EXPR:
    2618         1884 :     case MIN_EXPR:
    2619         1884 :     case MAX_EXPR:
    2620         1884 :     case LSHIFT_EXPR:
    2621         1884 :     case RSHIFT_EXPR:
    2622         1884 :     case BIT_IOR_EXPR:
    2623         1884 :     case BIT_XOR_EXPR:
    2624         1884 :     case BIT_AND_EXPR:
    2625         1884 :     case TRUTH_ANDIF_EXPR:
    2626         1884 :     case TRUTH_ORIF_EXPR:
    2627         1884 :     case LT_EXPR:
    2628         1884 :     case LE_EXPR:
    2629         1884 :     case GT_EXPR:
    2630         1884 :     case GE_EXPR:
    2631         1884 :     case EQ_EXPR:
    2632         1884 :     case NE_EXPR:
    2633         1884 :     case SPACESHIP_EXPR:
    2634         1884 :       dump_binary_op (pp, OVL_OP_INFO (false, TREE_CODE (t))->name, t, flags);
    2635         1884 :       break;
    2636              : 
    2637           81 :     case CEIL_DIV_EXPR:
    2638           81 :     case FLOOR_DIV_EXPR:
    2639           81 :     case ROUND_DIV_EXPR:
    2640           81 :     case RDIV_EXPR:
    2641           81 :     case EXACT_DIV_EXPR:
    2642           81 :       dump_binary_op (pp, "/", t, flags);
    2643           81 :       break;
    2644              : 
    2645            0 :     case CEIL_MOD_EXPR:
    2646            0 :     case FLOOR_MOD_EXPR:
    2647            0 :     case ROUND_MOD_EXPR:
    2648            0 :       dump_binary_op (pp, "%", t, flags);
    2649            0 :       break;
    2650              : 
    2651         1890 :     case COMPONENT_REF:
    2652         1890 :       {
    2653         1890 :         tree ob = TREE_OPERAND (t, 0);
    2654         1890 :         if (INDIRECT_REF_P (ob))
    2655              :           {
    2656          872 :             ob = TREE_OPERAND (ob, 0);
    2657          872 :             if (!is_this_parameter (ob)
    2658          872 :                 && !is_dummy_object (ob))
    2659              :               {
    2660          848 :                 dump_expr (pp, ob, flags | TFF_EXPR_IN_PARENS);
    2661          848 :                 if (TYPE_REF_P (TREE_TYPE (ob)))
    2662          237 :                   pp_cxx_dot (pp);
    2663              :                 else
    2664          611 :                   pp_cxx_arrow (pp);
    2665              :               }
    2666              :           }
    2667              :         else
    2668              :           {
    2669         1018 :             dump_expr (pp, ob, flags | TFF_EXPR_IN_PARENS);
    2670         1018 :             if (TREE_CODE (ob) != ARROW_EXPR)
    2671         1015 :               pp_cxx_dot (pp);
    2672              :           }
    2673         1890 :         dump_expr (pp, TREE_OPERAND (t, 1), flags & ~TFF_EXPR_IN_PARENS);
    2674              :       }
    2675         1890 :       break;
    2676              : 
    2677          289 :     case ARRAY_REF:
    2678          289 :       dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    2679          289 :       pp_cxx_left_bracket (pp);
    2680          289 :       dump_expr (pp, TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
    2681          289 :       pp_cxx_right_bracket (pp);
    2682          289 :       break;
    2683              : 
    2684           33 :     case OMP_ARRAY_SECTION:
    2685           33 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    2686           33 :       pp_cxx_left_bracket (pp);
    2687           33 :       dump_expr (pp, TREE_OPERAND (t, 1), flags);
    2688           33 :       pp_colon (pp);
    2689           33 :       dump_expr (pp, TREE_OPERAND (t, 2), flags);
    2690           33 :       pp_cxx_right_bracket (pp);
    2691           33 :       break;
    2692              : 
    2693            0 :     case UNARY_PLUS_EXPR:
    2694            0 :       dump_unary_op (pp, "+", t, flags);
    2695            0 :       break;
    2696              : 
    2697         4316 :     case ADDR_EXPR:
    2698         4316 :       if (TREE_CODE (TREE_OPERAND (t, 0)) == FUNCTION_DECL
    2699         3142 :           || TREE_CODE (TREE_OPERAND (t, 0)) == STRING_CST
    2700              :           /* An ADDR_EXPR can have reference type.  In that case, we
    2701              :              shouldn't print the `&' doing so indicates to the user
    2702              :              that the expression has pointer type.  */
    2703         7362 :           || (TREE_TYPE (t)
    2704         3046 :               && TYPE_REF_P (TREE_TYPE (t))))
    2705         1317 :         dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    2706         2999 :       else if (TREE_CODE (TREE_OPERAND (t, 0)) == LABEL_DECL)
    2707            3 :         dump_unary_op (pp, "&&", t, flags);
    2708              :       else
    2709         2996 :         dump_unary_op (pp, "&", t, flags);
    2710              :       break;
    2711              : 
    2712          699 :     case INDIRECT_REF:
    2713          699 :       if (TREE_HAS_CONSTRUCTOR (t))
    2714              :         {
    2715            0 :           t = TREE_OPERAND (t, 0);
    2716            0 :           gcc_assert (TREE_CODE (t) == CALL_EXPR);
    2717            0 :           dump_expr (pp, CALL_EXPR_FN (t), flags | TFF_EXPR_IN_PARENS);
    2718            0 :           dump_call_expr_args (pp, t, flags, true);
    2719              :         }
    2720          699 :       else if (is_stub_object (t))
    2721              :         {
    2722           18 :           pp_string (pp, "std::declval<");
    2723           18 :           if (lvalue_p (t)) /* T& */
    2724            0 :             dump_type (pp, TREE_TYPE (STRIP_REFERENCE_REF (t)), flags);
    2725              :           else /* T */
    2726           18 :             dump_type (pp, TREE_TYPE (t), flags);
    2727           18 :           pp_string (pp, ">()");
    2728              :         }
    2729              :       else
    2730              :         {
    2731          681 :           if (TREE_OPERAND (t,0) != NULL_TREE
    2732          681 :               && TREE_TYPE (TREE_OPERAND (t, 0))
    2733         1354 :               && NEXT_CODE (TREE_OPERAND (t, 0)) == REFERENCE_TYPE)
    2734          415 :             dump_expr (pp, TREE_OPERAND (t, 0), flags);
    2735              :           else
    2736          266 :             dump_unary_op (pp, "*", t, flags);
    2737              :         }
    2738              :       break;
    2739              : 
    2740          575 :     case MEM_REF:
    2741              :       /* Delegate to the base "C" pretty printer.  */
    2742          575 :       pp->c_pretty_printer::unary_expression (t);
    2743          575 :       break;
    2744              : 
    2745            0 :     case TARGET_MEM_REF:
    2746              :       /* TARGET_MEM_REF can't appear directly from source, but can appear
    2747              :          during late GIMPLE optimizations and through late diagnostic we might
    2748              :          need to support it.  Print it as dereferencing of a pointer after
    2749              :          cast to the TARGET_MEM_REF type, with pointer arithmetics on some
    2750              :          pointer to single byte types, so
    2751              :          *(type *)((char *) ptr + step * index + index2) if all the operands
    2752              :          are present and the casts are needed.  */
    2753            0 :       pp_cxx_star (pp);
    2754            0 :       pp_cxx_left_paren (pp);
    2755            0 :       if (TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (TMR_BASE (t)))) == NULL_TREE
    2756            0 :           || !integer_onep (TYPE_SIZE_UNIT
    2757              :                                 (TREE_TYPE (TREE_TYPE (TMR_BASE (t))))))
    2758              :         {
    2759            0 :           if (TYPE_SIZE_UNIT (TREE_TYPE (t))
    2760            0 :               && integer_onep (TYPE_SIZE_UNIT (TREE_TYPE (t))))
    2761              :             {
    2762            0 :               pp_cxx_left_paren (pp);
    2763            0 :               dump_type (pp, build_pointer_type (TREE_TYPE (t)), flags);
    2764              :             }
    2765              :           else
    2766              :             {
    2767            0 :               dump_type (pp, build_pointer_type (TREE_TYPE (t)), flags);
    2768            0 :               pp_cxx_right_paren (pp);
    2769            0 :               pp_cxx_left_paren (pp);
    2770            0 :               pp_cxx_left_paren (pp);
    2771            0 :               dump_type (pp, build_pointer_type (char_type_node), flags);
    2772              :             }
    2773            0 :           pp_cxx_right_paren (pp);
    2774              :         }
    2775            0 :       else if (!same_type_p (TREE_TYPE (t),
    2776              :                              TREE_TYPE (TREE_TYPE (TMR_BASE (t)))))
    2777              :         {
    2778            0 :           dump_type (pp, build_pointer_type (TREE_TYPE (t)), flags);
    2779            0 :           pp_cxx_right_paren (pp);
    2780            0 :           pp_cxx_left_paren (pp);
    2781              :         }
    2782            0 :       dump_expr (pp, TMR_BASE (t), flags);
    2783            0 :       if (TMR_STEP (t) && TMR_INDEX (t))
    2784              :         {
    2785            0 :           pp_cxx_ws_string (pp, "+");
    2786            0 :           dump_expr (pp, TMR_INDEX (t), flags);
    2787            0 :           pp_cxx_ws_string (pp, "*");
    2788            0 :           dump_expr (pp, TMR_STEP (t), flags);
    2789              :         }
    2790            0 :       if (TMR_INDEX2 (t))
    2791              :         {
    2792            0 :           pp_cxx_ws_string (pp, "+");
    2793            0 :           dump_expr (pp, TMR_INDEX2 (t), flags);
    2794              :         }
    2795            0 :       if (!integer_zerop (TMR_OFFSET (t)))
    2796              :         {
    2797            0 :           pp_cxx_ws_string (pp, "+");
    2798            0 :           dump_expr (pp, fold_convert (ssizetype, TMR_OFFSET (t)), flags);
    2799              :         }
    2800            0 :       pp_cxx_right_paren (pp);
    2801            0 :       break;
    2802              : 
    2803          245 :     case NEGATE_EXPR:
    2804          245 :     case BIT_NOT_EXPR:
    2805          245 :     case TRUTH_NOT_EXPR:
    2806          245 :     case PREDECREMENT_EXPR:
    2807          245 :     case PREINCREMENT_EXPR:
    2808          245 :       dump_unary_op (pp, OVL_OP_INFO (false, TREE_CODE (t))->name, t, flags);
    2809          245 :       break;
    2810              : 
    2811            0 :     case POSTDECREMENT_EXPR:
    2812            0 :     case POSTINCREMENT_EXPR:
    2813            0 :       pp_cxx_left_paren (pp);
    2814            0 :       dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    2815            0 :       pp_cxx_ws_string (pp, OVL_OP_INFO (false, TREE_CODE (t))->name);
    2816            0 :       pp_cxx_right_paren (pp);
    2817            0 :       break;
    2818              : 
    2819         1928 :     case NON_LVALUE_EXPR:
    2820              :       /* FIXME: This is a KLUDGE workaround for a parsing problem.  There
    2821              :          should be another level of INDIRECT_REF so that I don't have to do
    2822              :          this.  */
    2823         1928 :       if (TREE_TYPE (t) != NULL_TREE && NEXT_CODE (t) == POINTER_TYPE)
    2824              :         {
    2825           23 :           tree next = TREE_TYPE (TREE_TYPE (t));
    2826              : 
    2827           23 :           while (TYPE_PTR_P (next))
    2828            0 :             next = TREE_TYPE (next);
    2829              : 
    2830           23 :           if (TREE_CODE (next) == FUNCTION_TYPE)
    2831              :             {
    2832            0 :               if (flags & TFF_EXPR_IN_PARENS)
    2833            0 :                 pp_cxx_left_paren (pp);
    2834            0 :               pp_cxx_star (pp);
    2835            0 :               dump_expr (pp, TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
    2836            0 :               if (flags & TFF_EXPR_IN_PARENS)
    2837            0 :                 pp_cxx_right_paren (pp);
    2838              :               break;
    2839              :             }
    2840              :           /* Else fall through.  */
    2841              :         }
    2842         1928 :       dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    2843         1928 :       break;
    2844              : 
    2845        13006 :     CASE_CONVERT:
    2846        13006 :     case IMPLICIT_CONV_EXPR:
    2847        13006 :     case VIEW_CONVERT_EXPR:
    2848        13006 :     case EXCESS_PRECISION_EXPR:
    2849        13006 :       {
    2850        13006 :         tree op = TREE_OPERAND (t, 0);
    2851              : 
    2852        13006 :         if (location_wrapper_p (t))
    2853              :           {
    2854              :             dump_expr (pp, op, flags);
    2855              :             break;
    2856              :           }
    2857              : 
    2858         8500 :         tree ttype = TREE_TYPE (t);
    2859         8500 :         tree optype = TREE_TYPE (op);
    2860         8500 :         if (!optype)
    2861          154 :           optype = unknown_type_node;
    2862              : 
    2863         8500 :         if (TREE_CODE (ttype) != TREE_CODE (optype)
    2864         5759 :             && INDIRECT_TYPE_P (ttype)
    2865         5454 :             && INDIRECT_TYPE_P (optype)
    2866        13936 :             && same_type_p (TREE_TYPE (optype),
    2867              :                             TREE_TYPE (ttype)))
    2868              :           {
    2869         5388 :             if (TYPE_REF_P (ttype))
    2870              :               {
    2871         3876 :                 STRIP_NOPS (op);
    2872         3876 :                 if (TREE_CODE (op) == ADDR_EXPR)
    2873         2467 :                   dump_expr (pp, TREE_OPERAND (op, 0), flags);
    2874              :                 else
    2875         1409 :                   dump_unary_op (pp, "*", t, flags);
    2876              :               }
    2877              :             else
    2878         1512 :               dump_unary_op (pp, "&", t, flags);
    2879              :           }
    2880         3112 :         else if (!same_type_p (optype, ttype))
    2881              :           {
    2882              :             /* It is a cast, but we cannot tell whether it is a
    2883              :                reinterpret or static cast. Use the C style notation.  */
    2884         2640 :             if (flags & TFF_EXPR_IN_PARENS)
    2885         2045 :               pp_cxx_left_paren (pp);
    2886         2640 :             pp_cxx_left_paren (pp);
    2887         2640 :             dump_type (pp, TREE_TYPE (t), flags);
    2888         2640 :             pp_cxx_right_paren (pp);
    2889         2640 :             dump_expr (pp, op, flags | TFF_EXPR_IN_PARENS);
    2890         2640 :             if (flags & TFF_EXPR_IN_PARENS)
    2891         2045 :               pp_cxx_right_paren (pp);
    2892              :           }
    2893              :         else
    2894              :           dump_expr (pp, op, flags);
    2895              :         break;
    2896              :       }
    2897              : 
    2898        18088 :     case CONSTRUCTOR:
    2899        18088 :       if (TREE_TYPE (t) && TYPE_PTRMEMFUNC_P (TREE_TYPE (t)))
    2900              :         {
    2901           18 :           tree idx = build_ptrmemfunc_access_expr (t, pfn_identifier);
    2902              : 
    2903           18 :           if (integer_zerop (idx))
    2904              :             {
    2905              :               /* A NULL pointer-to-member constant.  */
    2906           14 :               pp_cxx_left_paren (pp);
    2907           14 :               pp_cxx_left_paren (pp);
    2908           14 :               dump_type (pp, TREE_TYPE (t), flags);
    2909           14 :               pp_cxx_right_paren (pp);
    2910           14 :               pp_character (pp, '0');
    2911           14 :               pp_cxx_right_paren (pp);
    2912           14 :               break;
    2913              :             }
    2914            4 :           else if (tree_fits_shwi_p (idx))
    2915              :             {
    2916            4 :               tree virtuals;
    2917            4 :               unsigned HOST_WIDE_INT n;
    2918              : 
    2919            4 :               t = TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (TREE_TYPE (t)));
    2920            4 :               t = TYPE_METHOD_BASETYPE (t);
    2921            4 :               virtuals = BINFO_VIRTUALS (TYPE_BINFO (TYPE_MAIN_VARIANT (t)));
    2922              : 
    2923            4 :               n = tree_to_shwi (idx);
    2924              : 
    2925              :               /* Map vtable index back one, to allow for the null pointer to
    2926              :                  member.  */
    2927            4 :               --n;
    2928              : 
    2929            4 :               while (n > 0 && virtuals)
    2930              :                 {
    2931            0 :                   --n;
    2932            0 :                   virtuals = TREE_CHAIN (virtuals);
    2933              :                 }
    2934            4 :               if (virtuals)
    2935              :                 {
    2936            4 :                   dump_expr (pp, BV_FN (virtuals),
    2937              :                              flags | TFF_EXPR_IN_PARENS);
    2938            4 :                   break;
    2939              :                 }
    2940              :             }
    2941              :         }
    2942        33760 :       if (TREE_TYPE (t) && LAMBDA_TYPE_P (TREE_TYPE (t)))
    2943          438 :         pp_string (pp, "<lambda closure object>");
    2944        18070 :       if (TREE_TYPE (t) && EMPTY_CONSTRUCTOR_P (t))
    2945              :         {
    2946        10341 :           dump_type (pp, TREE_TYPE (t), 0);
    2947        10341 :           pp_cxx_left_paren (pp);
    2948        10341 :           pp_cxx_right_paren (pp);
    2949              :         }
    2950              :       else
    2951              :         {
    2952         7729 :           if (!BRACE_ENCLOSED_INITIALIZER_P (t))
    2953         7670 :             dump_type (pp, TREE_TYPE (t), 0);
    2954         7729 :           pp_cxx_left_brace (pp);
    2955         7729 :           dump_expr_init_vec (pp, CONSTRUCTOR_ELTS (t), flags);
    2956         7729 :           pp_cxx_right_brace (pp);
    2957              :         }
    2958              : 
    2959              :       break;
    2960              : 
    2961           25 :     case OFFSET_REF:
    2962           25 :       {
    2963           25 :         tree ob = TREE_OPERAND (t, 0);
    2964           25 :         if (is_dummy_object (ob))
    2965              :           {
    2966           22 :             t = TREE_OPERAND (t, 1);
    2967           22 :             if (TREE_CODE (t) == FUNCTION_DECL)
    2968              :               /* A::f */
    2969            0 :               dump_expr (pp, t, flags | TFF_EXPR_IN_PARENS);
    2970           22 :             else if (BASELINK_P (t))
    2971     23653256 :               dump_expr (pp, OVL_FIRST (BASELINK_FUNCTIONS (t)),
    2972              :                          flags | TFF_EXPR_IN_PARENS);
    2973              :             else
    2974            3 :               dump_decl (pp, t, flags);
    2975              :           }
    2976              :         else
    2977              :           {
    2978            3 :             if (INDIRECT_REF_P (ob))
    2979              :               {
    2980            3 :                 dump_expr (pp, TREE_OPERAND (ob, 0), flags | TFF_EXPR_IN_PARENS);
    2981            3 :                 pp_cxx_arrow (pp);
    2982            3 :                 pp_cxx_star (pp);
    2983              :               }
    2984              :             else
    2985              :               {
    2986            0 :                 dump_expr (pp, ob, flags | TFF_EXPR_IN_PARENS);
    2987            0 :                 pp_cxx_dot (pp);
    2988            0 :                 pp_cxx_star (pp);
    2989              :               }
    2990            3 :             dump_expr (pp, TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
    2991              :           }
    2992              :         break;
    2993              :       }
    2994              : 
    2995         1575 :     case TEMPLATE_PARM_INDEX:
    2996         1575 :       dump_decl (pp, TEMPLATE_PARM_DECL (t), flags & ~TFF_DECL_SPECIFIERS);
    2997         1575 :       break;
    2998              : 
    2999          167 :     case CAST_EXPR:
    3000          167 :       if (TREE_OPERAND (t, 0) == NULL_TREE
    3001          167 :           || TREE_CHAIN (TREE_OPERAND (t, 0)))
    3002              :         {
    3003          111 :           dump_type (pp, TREE_TYPE (t), flags);
    3004          111 :           pp_cxx_left_paren (pp);
    3005          111 :           dump_expr_list (pp, TREE_OPERAND (t, 0), flags);
    3006          111 :           pp_cxx_right_paren (pp);
    3007              :         }
    3008              :       else
    3009              :         {
    3010           56 :           pp_cxx_left_paren (pp);
    3011           56 :           dump_type (pp, TREE_TYPE (t), flags);
    3012           56 :           pp_cxx_right_paren (pp);
    3013           56 :           pp_cxx_left_paren (pp);
    3014           56 :           dump_expr_list (pp, TREE_OPERAND (t, 0), flags);
    3015           56 :           pp_cxx_right_paren (pp);
    3016              :         }
    3017              :       break;
    3018              : 
    3019           31 :     case STATIC_CAST_EXPR:
    3020           31 :       pp_cxx_ws_string (pp, "static_cast");
    3021           31 :       goto cast;
    3022            0 :     case REINTERPRET_CAST_EXPR:
    3023            0 :       pp_cxx_ws_string (pp, "reinterpret_cast");
    3024            0 :       goto cast;
    3025            3 :     case CONST_CAST_EXPR:
    3026            3 :       pp_cxx_ws_string (pp, "const_cast");
    3027            3 :       goto cast;
    3028            0 :     case DYNAMIC_CAST_EXPR:
    3029            0 :       pp_cxx_ws_string (pp, "dynamic_cast");
    3030           34 :     cast:
    3031           34 :       pp_cxx_begin_template_argument_list (pp);
    3032           34 :       dump_type (pp, TREE_TYPE (t), flags);
    3033           34 :       pp_cxx_end_template_argument_list (pp);
    3034           34 :       pp_cxx_left_paren (pp);
    3035           34 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3036           34 :       pp_cxx_right_paren (pp);
    3037           34 :       break;
    3038              : 
    3039            3 :     case ARROW_EXPR:
    3040            3 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3041            3 :       pp_cxx_arrow (pp);
    3042            3 :       break;
    3043              : 
    3044          190 :     case SIZEOF_EXPR:
    3045          190 :     case ALIGNOF_EXPR:
    3046          190 :       if (TREE_CODE (t) == SIZEOF_EXPR)
    3047          172 :         pp_cxx_ws_string (pp, "sizeof");
    3048           18 :       else if (ALIGNOF_EXPR_STD_P (t))
    3049           12 :         pp_cxx_ws_string (pp, "alignof");
    3050              :       else
    3051            6 :         pp_cxx_ws_string (pp, "__alignof__");
    3052          190 :       op = TREE_OPERAND (t, 0);
    3053          190 :       if (PACK_EXPANSION_P (op))
    3054              :         {
    3055           84 :           pp_string (pp, "...");
    3056           84 :           op = PACK_EXPANSION_PATTERN (op);
    3057              :         }
    3058          190 :       pp_cxx_whitespace (pp);
    3059          190 :       pp_cxx_left_paren (pp);
    3060          190 :       if (TREE_CODE (t) == SIZEOF_EXPR && SIZEOF_EXPR_TYPE_P (t))
    3061           29 :         dump_type (pp, TREE_TYPE (op), flags);
    3062          161 :       else if (TYPE_P (TREE_OPERAND (t, 0)))
    3063           98 :         dump_type (pp, op, flags);
    3064              :       else
    3065           63 :         dump_expr (pp, op, flags);
    3066          190 :       pp_cxx_right_paren (pp);
    3067          190 :       break;
    3068              : 
    3069            0 :     case AT_ENCODE_EXPR:
    3070            0 :       pp_cxx_ws_string (pp, "@encode");
    3071            0 :       pp_cxx_whitespace (pp);
    3072            0 :       pp_cxx_left_paren (pp);
    3073            0 :       dump_type (pp, TREE_OPERAND (t, 0), flags);
    3074            0 :       pp_cxx_right_paren (pp);
    3075            0 :       break;
    3076              : 
    3077           12 :     case NOEXCEPT_EXPR:
    3078           12 :       pp_cxx_ws_string (pp, "noexcept");
    3079           12 :       pp_cxx_whitespace (pp);
    3080           12 :       pp_cxx_left_paren (pp);
    3081           12 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3082           12 :       pp_cxx_right_paren (pp);
    3083           12 :       break;
    3084              : 
    3085            0 :     case REALPART_EXPR:
    3086            0 :     case IMAGPART_EXPR:
    3087            0 :       pp_cxx_ws_string (pp, OVL_OP_INFO (false, TREE_CODE (t))->name);
    3088            0 :       pp_cxx_whitespace (pp);
    3089            0 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3090            0 :       break;
    3091              : 
    3092            0 :     case DEFERRED_PARSE:
    3093            0 :       pp_string (pp, M_("<unparsed>"));
    3094            0 :       break;
    3095              : 
    3096            0 :     case TRY_CATCH_EXPR:
    3097            0 :     case CLEANUP_POINT_EXPR:
    3098            0 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3099            0 :       break;
    3100              : 
    3101            0 :     case PSEUDO_DTOR_EXPR:
    3102            0 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3103            0 :       pp_cxx_dot (pp);
    3104            0 :       if (TREE_OPERAND (t, 1))
    3105              :         {
    3106            0 :           dump_type (pp, TREE_OPERAND (t, 1), flags);
    3107            0 :           pp_cxx_colon_colon (pp);
    3108              :         }
    3109            0 :       pp_cxx_complement (pp);
    3110            0 :       dump_type (pp, TREE_OPERAND (t, 2), flags);
    3111            0 :       break;
    3112              : 
    3113         1440 :     case TEMPLATE_ID_EXPR:
    3114         1440 :       dump_decl (pp, t, flags);
    3115         1440 :       break;
    3116              : 
    3117           28 :     case BIND_EXPR:
    3118           28 :     case STMT_EXPR:
    3119           28 :     case EXPR_STMT:
    3120           28 :     case STATEMENT_LIST:
    3121              :       /* We don't yet have a way of dumping statements in a
    3122              :          human-readable format.  */
    3123           28 :       pp_string (pp, "({...})");
    3124           28 :       break;
    3125              : 
    3126            0 :     case LOOP_EXPR:
    3127            0 :       pp_string (pp, "while (1) { ");
    3128            0 :       dump_expr (pp, TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
    3129            0 :       pp_cxx_right_brace (pp);
    3130            0 :       break;
    3131              : 
    3132            0 :     case EXIT_EXPR:
    3133            0 :       pp_string (pp, "if (");
    3134            0 :       dump_expr (pp, TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
    3135            0 :       pp_string (pp, ") break; ");
    3136            0 :       break;
    3137              : 
    3138          149 :     case BASELINK:
    3139          149 :       dump_expr (pp, BASELINK_FUNCTIONS (t), flags & ~TFF_EXPR_IN_PARENS);
    3140          149 :       break;
    3141              : 
    3142          700 :     case EMPTY_CLASS_EXPR:
    3143          700 :       dump_type (pp, TREE_TYPE (t), flags);
    3144          700 :       pp_cxx_left_paren (pp);
    3145          700 :       pp_cxx_right_paren (pp);
    3146          700 :       break;
    3147              : 
    3148            0 :     case ARGUMENT_PACK_SELECT:
    3149            0 :       dump_template_argument (pp, ARGUMENT_PACK_SELECT_FROM_PACK (t), flags);
    3150            0 :       break;
    3151              : 
    3152          141 :     case RECORD_TYPE:
    3153          141 :     case UNION_TYPE:
    3154          141 :     case ENUMERAL_TYPE:
    3155          141 :     case REAL_TYPE:
    3156          141 :     case VOID_TYPE:
    3157          141 :     case OPAQUE_TYPE:
    3158          141 :     case BOOLEAN_TYPE:
    3159          141 :     case INTEGER_TYPE:
    3160          141 :     case COMPLEX_TYPE:
    3161          141 :     case VECTOR_TYPE:
    3162          141 :     case DECLTYPE_TYPE:
    3163          141 :       pp_type_specifier_seq (pp, t);
    3164          141 :       break;
    3165              : 
    3166            0 :     case TYPENAME_TYPE:
    3167              :       /* We get here when we want to print a dependent type as an
    3168              :          id-expression, without any disambiguator decoration.  */
    3169            0 :       pp->id_expression (t);
    3170            0 :       break;
    3171              : 
    3172           33 :     case TEMPLATE_TYPE_PARM:
    3173           33 :     case TEMPLATE_TEMPLATE_PARM:
    3174           33 :     case BOUND_TEMPLATE_TEMPLATE_PARM:
    3175           33 :       dump_type (pp, t, flags);
    3176           33 :       break;
    3177              : 
    3178           58 :     case TRAIT_EXPR:
    3179           58 :       pp_cxx_trait (pp, t);
    3180           58 :       break;
    3181              : 
    3182            3 :     case VA_ARG_EXPR:
    3183            3 :       pp_cxx_va_arg_expression (pp, t);
    3184            3 :       break;
    3185              : 
    3186           15 :     case OFFSETOF_EXPR:
    3187           15 :       pp_cxx_offsetof_expression (pp, t);
    3188           15 :       break;
    3189              : 
    3190            0 :     case ADDRESSOF_EXPR:
    3191            0 :       pp_cxx_addressof_expression (pp, t);
    3192            0 :       break;
    3193              : 
    3194          971 :     case SCOPE_REF:
    3195          971 :       dump_decl (pp, t, flags);
    3196          971 :       break;
    3197              : 
    3198         3507 :     case EXPR_PACK_EXPANSION:
    3199         3507 :     case UNARY_LEFT_FOLD_EXPR:
    3200         3507 :     case UNARY_RIGHT_FOLD_EXPR:
    3201         3507 :     case BINARY_LEFT_FOLD_EXPR:
    3202         3507 :     case BINARY_RIGHT_FOLD_EXPR:
    3203         3507 :     case TYPEID_EXPR:
    3204         3507 :     case MEMBER_REF:
    3205         3507 :     case DOTSTAR_EXPR:
    3206         3507 :     case NEW_EXPR:
    3207         3507 :     case VEC_NEW_EXPR:
    3208         3507 :     case DELETE_EXPR:
    3209         3507 :     case VEC_DELETE_EXPR:
    3210         3507 :     case MODOP_EXPR:
    3211         3507 :     case ABS_EXPR:
    3212         3507 :     case ABSU_EXPR:
    3213         3507 :     case CONJ_EXPR:
    3214         3507 :     case VECTOR_CST:
    3215         3507 :     case FIXED_CST:
    3216         3507 :     case UNORDERED_EXPR:
    3217         3507 :     case ORDERED_EXPR:
    3218         3507 :     case UNLT_EXPR:
    3219         3507 :     case UNLE_EXPR:
    3220         3507 :     case UNGT_EXPR:
    3221         3507 :     case UNGE_EXPR:
    3222         3507 :     case UNEQ_EXPR:
    3223         3507 :     case LTGT_EXPR:
    3224         3507 :     case COMPLEX_EXPR:
    3225         3507 :     case BIT_FIELD_REF:
    3226         3507 :     case FIX_TRUNC_EXPR:
    3227         3507 :     case FLOAT_EXPR:
    3228         3507 :       pp->expression (t);
    3229         3507 :       break;
    3230              : 
    3231            0 :     case PACK_INDEX_EXPR:
    3232            0 :       pp->expression (PACK_INDEX_PACK (t));
    3233            0 :       pp_cxx_left_bracket (pp);
    3234            0 :       pp->expression (PACK_INDEX_INDEX (t));
    3235            0 :       pp_cxx_right_bracket (pp);
    3236            0 :       break;
    3237              : 
    3238            0 :     case TRUTH_AND_EXPR:
    3239            0 :     case TRUTH_OR_EXPR:
    3240            0 :     case TRUTH_XOR_EXPR:
    3241            0 :       if (flags & TFF_EXPR_IN_PARENS)
    3242            0 :         pp_cxx_left_paren (pp);
    3243            0 :       pp->expression (t);
    3244            0 :       if (flags & TFF_EXPR_IN_PARENS)
    3245            0 :         pp_cxx_right_paren (pp);
    3246              :       break;
    3247              : 
    3248            6 :     case OBJ_TYPE_REF:
    3249            6 :       dump_expr (pp, resolve_virtual_fun_from_obj_type_ref (t), flags);
    3250            6 :       break;
    3251              : 
    3252          111 :     case LAMBDA_EXPR:
    3253          111 :       pp_string (pp, M_("<lambda>"));
    3254          111 :       break;
    3255              : 
    3256           10 :     case PAREN_EXPR:
    3257           10 :       pp_cxx_left_paren (pp);
    3258           10 :       dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    3259           10 :       pp_cxx_right_paren (pp);
    3260           10 :       break;
    3261              : 
    3262            3 :     case REQUIRES_EXPR:
    3263            3 :       pp_cxx_requires_expr (cxx_pp, t);
    3264            3 :       break;
    3265              : 
    3266            0 :     case SIMPLE_REQ:
    3267            0 :       pp_cxx_simple_requirement (cxx_pp, t);
    3268            0 :       break;
    3269              : 
    3270            0 :     case TYPE_REQ:
    3271            0 :       pp_cxx_type_requirement (cxx_pp, t);
    3272            0 :       break;
    3273              : 
    3274            0 :     case COMPOUND_REQ:
    3275            0 :       pp_cxx_compound_requirement (cxx_pp, t);
    3276            0 :       break;
    3277              : 
    3278            0 :     case NESTED_REQ:
    3279            0 :       pp_cxx_nested_requirement (cxx_pp, t);
    3280            0 :       break;
    3281              : 
    3282         1007 :     case ATOMIC_CONSTR:
    3283         1007 :     case CONJ_CONSTR:
    3284         1007 :     case DISJ_CONSTR:
    3285         1007 :       {
    3286         1007 :         pp_cxx_constraint (cxx_pp, t);
    3287         1007 :         break;
    3288              :       }
    3289              : 
    3290           13 :     case PLACEHOLDER_EXPR:
    3291           13 :       pp_string (pp, M_("*this"));
    3292           13 :       break;
    3293              : 
    3294           49 :     case TREE_LIST:
    3295           49 :       dump_expr_list (pp, t, flags);
    3296           49 :       break;
    3297              : 
    3298            6 :     case NONTYPE_ARGUMENT_PACK:
    3299            6 :       {
    3300            6 :         tree args = ARGUMENT_PACK_ARGS (t);
    3301            6 :         int len = TREE_VEC_LENGTH (args);
    3302            6 :         pp_cxx_left_brace (pp);
    3303           18 :         for (int i = 0; i < len; ++i)
    3304              :           {
    3305            6 :             if (i > 0)
    3306            0 :               pp_separate_with_comma (pp);
    3307            6 :             dump_expr (pp, TREE_VEC_ELT (args, i), flags);
    3308              :           }
    3309            6 :         pp_cxx_right_brace (pp);
    3310            6 :         break;
    3311              :       }
    3312              : 
    3313            3 :     case CO_AWAIT_EXPR:
    3314            3 :       pp_cxx_ws_string (pp, "co_await");
    3315            3 :       pp_cxx_whitespace (pp);
    3316            3 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3317            3 :       break;
    3318              : 
    3319            0 :     case CO_YIELD_EXPR:
    3320            0 :       pp_cxx_ws_string (pp, "co_yield");
    3321            0 :       pp_cxx_whitespace (pp);
    3322            0 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3323            0 :       break;
    3324              : 
    3325            0 :     case CO_RETURN_EXPR:
    3326            0 :       pp_cxx_ws_string (pp, "co_return");
    3327            0 :       if (TREE_OPERAND (t, 0))
    3328              :         {
    3329            0 :           pp_cxx_whitespace (pp);
    3330            0 :           dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3331              :         }
    3332              :       break;
    3333              : 
    3334          318 :     case REFLECT_EXPR:
    3335          318 :       {
    3336          318 :         tree h = REFLECT_EXPR_HANDLE (t);
    3337          318 :         bool any;
    3338          318 :         switch (REFLECT_EXPR_KIND (t))
    3339              :           {
    3340            4 :           case REFLECT_ANNOTATION:
    3341            4 :             pp_string (pp, "^^[[=");
    3342            4 :             pp->set_padding (pp_none);
    3343            4 :             dump_expr (pp, TREE_VALUE (TREE_VALUE (h)), flags);
    3344            4 :             pp_string (pp, "]]");
    3345            4 :             break;
    3346            6 :           case REFLECT_DATA_MEMBER_SPEC:
    3347            6 :             pp_cxx_ws_string (pp, "data_member_spec");
    3348            6 :             pp_string (pp, "(^^");
    3349            6 :             pp->set_padding (pp_none);
    3350            6 :             dump_type (pp, TREE_VEC_ELT (h, 0), flags);
    3351            6 :             pp_string (pp, ",{");
    3352            6 :             any = false;
    3353            6 :             if (TREE_VEC_ELT (h, 1))
    3354              :               {
    3355            4 :                 pp_string (pp, ".name=");
    3356            4 :                 pp_doublequote (pp);
    3357            4 :                 pp->set_padding (pp_none);
    3358            4 :                 dump_decl (pp, TREE_VEC_ELT (h, 1), flags);
    3359            4 :                 pp_doublequote (pp);
    3360            4 :                 any = true;
    3361              :               }
    3362            6 :             if (TREE_VEC_ELT (h, 2))
    3363              :               {
    3364            2 :                 if (any)
    3365            2 :                   pp_comma (pp);
    3366            2 :                 pp_string (pp, ".alignment=");
    3367            2 :                 pp->set_padding (pp_none);
    3368            2 :                 dump_expr (pp, TREE_VEC_ELT (h, 2), flags);
    3369            2 :                 any = true;
    3370              :               }
    3371            6 :             if (TREE_VEC_ELT (h, 3))
    3372              :               {
    3373            2 :                 if (any)
    3374            0 :                   pp_comma (pp);
    3375            2 :                 pp_string (pp, ".bit_width=");
    3376            2 :                 pp->set_padding (pp_none);
    3377            2 :                 dump_expr (pp, TREE_VEC_ELT (h, 3), flags);
    3378            2 :                 any = true;
    3379              :               }
    3380            6 :             if (TREE_VEC_ELT (h, 4) && !integer_zerop (TREE_VEC_ELT (h, 4)))
    3381              :               {
    3382            2 :                 if (any)
    3383            2 :                   pp_comma (pp);
    3384            2 :                 pp_string (pp, ".no_unique_address=");
    3385            2 :                 pp->set_padding (pp_none);
    3386            2 :                 dump_expr (pp, TREE_VEC_ELT (h, 4), flags);
    3387            2 :                 any = true;
    3388              :               }
    3389            6 :             if (TREE_VEC_LENGTH (h) > 5)
    3390              :               {
    3391            2 :                 if (any)
    3392            2 :                   pp_comma (pp);
    3393            2 :                 pp_string (pp, ".annotations={");
    3394            2 :                 pp->set_padding (pp_none);
    3395            8 :                 for (int i = 5; i < TREE_VEC_LENGTH (h); ++i)
    3396              :                   {
    3397            6 :                     dump_expr (pp, TREE_VEC_ELT (h, i), flags);
    3398            6 :                     if (i != TREE_VEC_LENGTH (h) - 1)
    3399            4 :                       pp_comma (pp);
    3400            6 :                     pp->set_padding (pp_none);
    3401              :                   }
    3402            2 :                 pp_right_brace (pp);
    3403              :               }
    3404            6 :             pp_string (pp, "})");
    3405            6 :             break;
    3406            8 :           case REFLECT_BASE:
    3407            8 :             {
    3408            8 :               pp_cxx_ws_string (pp, "bases_of");
    3409            8 :               pp_string (pp, "(^^");
    3410            8 :               pp->set_padding (pp_none);
    3411            8 :               tree d = direct_base_derived (h);
    3412            8 :               dump_type (pp, d, flags);
    3413            8 :               pp_string (pp, ",std::meta::access_context::unchecked())[");
    3414            8 :               pp->set_padding (pp_none);
    3415            8 :               tree binfo = TYPE_BINFO (d), base_binfo;
    3416           14 :               for (unsigned i = 0; BINFO_BASE_ITERATE (binfo, i, base_binfo);
    3417              :                    i++)
    3418           14 :                 if (base_binfo == h)
    3419              :                   {
    3420            8 :                     pp_wide_integer (pp, i);
    3421            8 :                     break;
    3422              :                   }
    3423            8 :               pp_string (pp, "] {aka ");
    3424            8 :               pp->set_padding (pp_none);
    3425            8 :               dump_type (pp, BINFO_TYPE (h), flags);
    3426            8 :               pp_right_brace (pp);
    3427            8 :               break;
    3428              :             }
    3429           20 :           case REFLECT_PARM:
    3430           20 :             {
    3431           20 :               pp_cxx_ws_string (pp, "parameters_of");
    3432           20 :               pp_string (pp, "(^^");
    3433           20 :               pp->set_padding (pp_none);
    3434           20 :               h = maybe_update_function_parm (h);
    3435           20 :               dump_decl (pp, DECL_CONTEXT (h), flags);
    3436           20 :               pp_string (pp, ")[");
    3437           20 :               pp->set_padding (pp_none);
    3438           20 :               unsigned int i = 0;
    3439           20 :               for (tree arg = FUNCTION_FIRST_USER_PARM (DECL_CONTEXT (h));
    3440           24 :                    arg; arg = DECL_CHAIN (arg), ++i)
    3441           24 :                 if (arg == h)
    3442              :                   {
    3443           20 :                     pp_wide_integer (pp, i);
    3444           20 :                     break;
    3445              :                   }
    3446           20 :               pp_right_bracket (pp);
    3447           20 :               if (MULTIPLE_NAMES_PARM_P (h))
    3448              :                 break;
    3449           18 :               if (DECL_NAME (h))
    3450            2 :                 h = DECL_NAME (h);
    3451           16 :               else if (tree opn = lookup_attribute ("old parm name",
    3452           16 :                                                     DECL_ATTRIBUTES (h)))
    3453            4 :                 h = TREE_VALUE (TREE_VALUE (opn));
    3454              :               else
    3455              :                 break;
    3456            6 :               pp_string (pp, " {aka ");
    3457            6 :               dump_decl (pp, h, flags);
    3458            6 :               pp_right_brace (pp);
    3459            6 :               break;
    3460              :             }
    3461            6 :           case REFLECT_OBJECT:
    3462            6 :             pp_cxx_ws_string (pp, "std::meta::reflect_object");
    3463            6 :             pp_left_paren (pp);
    3464            6 :             pp->set_padding (pp_none);
    3465            6 :             dump_expr (pp, h, flags);
    3466            6 :             pp_right_paren (pp);
    3467            6 :             break;
    3468            8 :           case REFLECT_VALUE:
    3469            8 :             pp_cxx_ws_string (pp, "std::meta::reflect_constant");
    3470            8 :             pp_left_paren (pp);
    3471            8 :             pp->set_padding (pp_none);
    3472            8 :             dump_expr (pp, h, flags);
    3473            8 :             pp_right_paren (pp);
    3474            8 :             break;
    3475          266 :           default:
    3476          266 :             if (null_reflection_p (t))
    3477              :               {
    3478            4 :                 pp_cxx_ws_string (pp, "std::meta::info{}");
    3479            4 :                 break;
    3480              :               }
    3481          262 :             pp_string (pp, "^^");
    3482          262 :             pp->set_padding (pp_none);
    3483          262 :             if (DECL_P (h))
    3484          156 :               dump_decl (pp, h, flags);
    3485          106 :             else if (TYPE_P (h))
    3486              :               {
    3487              :                 /* For reflection we care about the difference
    3488              :                    between std::meta::info/std::nullptr_t and
    3489              :                    decltype(^^int)/decltype(nullptr).  */
    3490           82 :                 if (TREE_CODE (h) == META_TYPE && !typedef_variant_p (h))
    3491              :                   {
    3492            6 :                     pp_cxx_ws_string (pp, "decltype(^^int)");
    3493            6 :                     pp_c_type_qualifier_list (pp, h);
    3494              :                   }
    3495           76 :                 else if (TREE_CODE (h) == NULLPTR_TYPE
    3496           76 :                          && !typedef_variant_p (h))
    3497              :                   {
    3498            6 :                     pp_cxx_ws_string (pp, "decltype(nullptr)");
    3499            6 :                     pp_c_type_qualifier_list (pp, h);
    3500              :                   }
    3501              :                 else
    3502           70 :                   dump_type (pp, h, flags);
    3503              :               }
    3504              :             else
    3505              :               dump_expr (pp, h, flags);
    3506              :             break;
    3507              :           }
    3508              :         break;
    3509              :       }
    3510              : 
    3511           24 :     case SPLICE_EXPR:
    3512           24 :       pp_cxx_ws_string (pp, "[:");
    3513           24 :       pp_cxx_whitespace (pp);
    3514           24 :       dump_expr (pp, TREE_OPERAND (t, 0), flags);
    3515           24 :       pp_cxx_whitespace (pp);
    3516           24 :       pp_cxx_ws_string (pp, ":]");
    3517           24 :       break;
    3518              : 
    3519              :       /*  This list is incomplete, but should suffice for now.
    3520              :           It is very important that `sorry' does not call
    3521              :           `report_error_function'.  That could cause an infinite loop.  */
    3522           12 :     default:
    3523           12 :       pp_unsupported_tree (pp, t);
    3524              :       /* Fall through.  */
    3525           50 :     case ERROR_MARK:
    3526           50 :       pp_string (pp, M_("<expression error>"));
    3527           50 :       break;
    3528              :     }
    3529              : }
    3530              : 
    3531              : static void
    3532         2301 : dump_binary_op (cxx_pretty_printer *pp, const char *opstring, tree t,
    3533              :                 int flags)
    3534              : {
    3535         2301 :   pp_cxx_left_paren (pp);
    3536         2301 :   dump_expr (pp, TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
    3537         2301 :   pp_cxx_whitespace (pp);
    3538         2301 :   if (opstring)
    3539         2301 :     pp_cxx_ws_string (pp, opstring);
    3540              :   else
    3541            0 :     pp_string (pp, M_("<unknown operator>"));
    3542         2301 :   pp_cxx_whitespace (pp);
    3543         2301 :   tree op1 = TREE_OPERAND (t, 1);
    3544         2301 :   if (TREE_CODE (t) == POINTER_PLUS_EXPR
    3545          310 :       && TREE_CODE (op1) == INTEGER_CST
    3546         2485 :       && tree_int_cst_sign_bit (op1))
    3547              :     /* A pointer minus an integer is represented internally as plus a very
    3548              :        large number, don't expose that to users.  */
    3549           25 :     op1 = convert (ssizetype, op1);
    3550         2301 :   dump_expr (pp, op1, flags | TFF_EXPR_IN_PARENS);
    3551         2301 :   pp_cxx_right_paren (pp);
    3552         2301 : }
    3553              : 
    3554              : static void
    3555         6431 : dump_unary_op (cxx_pretty_printer *pp, const char *opstring, tree t, int flags)
    3556              : {
    3557         6431 :   if (flags & TFF_EXPR_IN_PARENS)
    3558         4347 :     pp_cxx_left_paren (pp);
    3559         6431 :   pp_cxx_ws_string (pp, opstring);
    3560         6431 :   dump_expr (pp, TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
    3561         6431 :   if (flags & TFF_EXPR_IN_PARENS)
    3562         4347 :     pp_cxx_right_paren (pp);
    3563         6431 : }
    3564              : 
    3565              : static void
    3566    246546913 : reinit_cxx_pp (void)
    3567              : {
    3568    246546913 :   pp_clear_output_area (cxx_pp);
    3569    246546913 :   cxx_pp->set_padding (pp_none);
    3570    246546913 :   pp_indentation (cxx_pp) = 0;
    3571    246546913 :   pp_needs_newline (cxx_pp) = false;
    3572    246546913 :   pp_show_color (cxx_pp) = false;
    3573    246546913 :   cxx_pp->enclosing_scope = current_function_decl;
    3574    246546913 : }
    3575              : 
    3576              : /* Same as pp_formatted_text, except the return string is a separate
    3577              :    copy and has a GGC storage duration, e.g. an indefinite lifetime.  */
    3578              : 
    3579              : inline const char *
    3580    246547377 : pp_ggc_formatted_text (pretty_printer *pp)
    3581              : {
    3582    246547377 :   return ggc_strdup (pp_formatted_text (pp));
    3583              : }
    3584              : 
    3585              : /* Exported interface to stringifying types, exprs and decls under TFF_*
    3586              :    control.  */
    3587              : 
    3588              : const char *
    3589          213 : type_as_string (tree typ, int flags)
    3590              : {
    3591          213 :   reinit_cxx_pp ();
    3592          213 :   pp_translate_identifiers (cxx_pp) = false;
    3593          213 :   dump_type (cxx_pp, typ, flags);
    3594          213 :   return pp_ggc_formatted_text (cxx_pp);
    3595              : }
    3596              : 
    3597              : const char *
    3598            0 : type_as_string_translate (tree typ, int flags)
    3599              : {
    3600            0 :   reinit_cxx_pp ();
    3601            0 :   dump_type (cxx_pp, typ, flags);
    3602            0 :   return pp_ggc_formatted_text (cxx_pp);
    3603              : }
    3604              : 
    3605              : const char *
    3606         5173 : expr_as_string (tree decl, int flags)
    3607              : {
    3608         5173 :   reinit_cxx_pp ();
    3609         5173 :   pp_translate_identifiers (cxx_pp) = false;
    3610         5173 :   dump_expr (cxx_pp, decl, flags);
    3611         5173 :   return pp_ggc_formatted_text (cxx_pp);
    3612              : }
    3613              : 
    3614              : /* Wrap decl_as_string with options appropriate for dwarf.  */
    3615              : 
    3616              : const char *
    3617     49999020 : decl_as_dwarf_string (tree decl, int flags)
    3618              : {
    3619     49999020 :   const char *name;
    3620              :   /* Curiously, reinit_cxx_pp doesn't reset the flags field, so setting the flag
    3621              :      here will be adequate to get the desired behavior.  */
    3622     49999020 :   cxx_pp->flags |= pp_c_flag_gnu_v3;
    3623     49999020 :   name = decl_as_string (decl, flags);
    3624              :   /* Subsequent calls to the pretty printer shouldn't use this style.  */
    3625     49999020 :   cxx_pp->flags &= ~pp_c_flag_gnu_v3;
    3626     49999020 :   return name;
    3627              : }
    3628              : 
    3629              : const char *
    3630     50078698 : decl_as_string (tree decl, int flags)
    3631              : {
    3632     50078698 :   reinit_cxx_pp ();
    3633     50078698 :   pp_translate_identifiers (cxx_pp) = false;
    3634     50078698 :   dump_decl (cxx_pp, decl, flags);
    3635     50078698 :   return pp_ggc_formatted_text (cxx_pp);
    3636              : }
    3637              : 
    3638              : const char *
    3639            0 : decl_as_string_translate (tree decl, int flags)
    3640              : {
    3641            0 :   reinit_cxx_pp ();
    3642            0 :   dump_decl (cxx_pp, decl, flags);
    3643            0 :   return pp_ggc_formatted_text (cxx_pp);
    3644              : }
    3645              : 
    3646              : /* Wrap lang_decl_name with options appropriate for dwarf.  */
    3647              : 
    3648              : const char *
    3649    196152136 : lang_decl_dwarf_name (tree decl, int v, bool translate)
    3650              : {
    3651    196152136 :   const char *name;
    3652              :   /* Curiously, reinit_cxx_pp doesn't reset the flags field, so setting the flag
    3653              :      here will be adequate to get the desired behavior.  */
    3654    196152136 :   cxx_pp->flags |= pp_c_flag_gnu_v3;
    3655    196152136 :   name = lang_decl_name (decl, v, translate);
    3656              :   /* Subsequent calls to the pretty printer shouldn't use this style.  */
    3657    196152136 :   cxx_pp->flags &= ~pp_c_flag_gnu_v3;
    3658    196152136 :   return name;
    3659              : }
    3660              : 
    3661              : /* Generate the three forms of printable names for cxx_printable_name.  */
    3662              : 
    3663              : const char *
    3664    196313401 : lang_decl_name (tree decl, int v, bool translate)
    3665              : {
    3666    196313401 :   if (v >= 2)
    3667        79421 :     return (translate
    3668        79421 :             ? decl_as_string_translate (decl, TFF_DECL_SPECIFIERS)
    3669        79421 :             : decl_as_string (decl, TFF_DECL_SPECIFIERS));
    3670              : 
    3671    196233980 :   reinit_cxx_pp ();
    3672    196233980 :   pp_translate_identifiers (cxx_pp) = translate;
    3673    196233980 :   if (v == 1
    3674    196233980 :       && (DECL_CLASS_SCOPE_P (decl)
    3675        86755 :           || (DECL_NAMESPACE_SCOPE_P (decl)
    3676        85476 :               && CP_DECL_CONTEXT (decl) != global_namespace)))
    3677              :     {
    3678       158040 :       dump_type (cxx_pp, CP_DECL_CONTEXT (decl), TFF_PLAIN_IDENTIFIER);
    3679       158040 :       pp_cxx_colon_colon (cxx_pp);
    3680              :     }
    3681              : 
    3682    196233980 :   if (TREE_CODE (decl) == FUNCTION_DECL)
    3683     96505529 :     dump_function_name (cxx_pp, decl, TFF_PLAIN_IDENTIFIER);
    3684     99728451 :   else if ((DECL_NAME (decl) == NULL_TREE)
    3685     99728451 :            && TREE_CODE (decl) == NAMESPACE_DECL)
    3686           21 :     dump_decl (cxx_pp, decl, TFF_PLAIN_IDENTIFIER | TFF_UNQUALIFIED_NAME);
    3687              :   else
    3688     99728430 :     dump_decl (cxx_pp, DECL_NAME (decl), TFF_PLAIN_IDENTIFIER);
    3689              : 
    3690    196233980 :   return pp_ggc_formatted_text (cxx_pp);
    3691              : }
    3692              : 
    3693              : /* Return the location of a tree passed to %+ formats.  */
    3694              : 
    3695              : location_t
    3696      2177842 : location_of (tree t)
    3697              : {
    3698      2177842 :   if (TYPE_P (t))
    3699              :     {
    3700         4061 :       t = TYPE_MAIN_DECL (t);
    3701         4061 :       if (t == NULL_TREE)
    3702          806 :         return input_location;
    3703              :     }
    3704      2173781 :   else if (TREE_CODE (t) == OVERLOAD)
    3705           44 :     t = (OVL_FIRST (t) != conv_op_marker ? OVL_FIRST (t)
    3706            0 :          : OVL_FIRST (OVL_CHAIN (t)));
    3707              : 
    3708      2177036 :   if (DECL_P (t))
    3709      1647988 :     return DECL_SOURCE_LOCATION (t);
    3710       529048 :   if (TREE_CODE (t) == DEFERRED_PARSE)
    3711           19 :     return defparse_location (t);
    3712       529029 :   return cp_expr_loc_or_input_loc (t);
    3713              : }
    3714              : 
    3715              : /* Now the interfaces from error et al to dump_type et al. Each takes an
    3716              :    on/off VERBOSE flag and supply the appropriate TFF_ flags to a dump_
    3717              :    function.  */
    3718              : 
    3719              : static const char *
    3720       103601 : decl_to_string (tree decl, int verbose, bool show_color)
    3721              : {
    3722       103601 :   int flags = 0;
    3723              : 
    3724       103601 :   if (TREE_CODE (decl) == TYPE_DECL || TREE_CODE (decl) == RECORD_TYPE
    3725              :       || TREE_CODE (decl) == UNION_TYPE || TREE_CODE (decl) == ENUMERAL_TYPE)
    3726         4091 :     flags = TFF_CLASS_KEY_OR_ENUM;
    3727       103601 :   if (verbose)
    3728        31744 :     flags |= TFF_DECL_SPECIFIERS;
    3729        71857 :   else if (TREE_CODE (decl) == FUNCTION_DECL)
    3730        46118 :     flags |= TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE;
    3731       103601 :   flags |= TFF_TEMPLATE_HEADER;
    3732              : 
    3733       103601 :   reinit_cxx_pp ();
    3734       103601 :   pp_show_color (cxx_pp) = show_color;
    3735       103601 :   dump_decl (cxx_pp, decl, flags);
    3736       103601 :   return pp_ggc_formatted_text (cxx_pp);
    3737              : }
    3738              : 
    3739              : const char *
    3740        52610 : expr_to_string (tree decl)
    3741              : {
    3742        52610 :   reinit_cxx_pp ();
    3743        52610 :   dump_expr (cxx_pp, decl, 0);
    3744        52610 :   return pp_ggc_formatted_text (cxx_pp);
    3745              : }
    3746              : 
    3747              : static const char *
    3748          372 : fndecl_to_string (tree fndecl, int verbose)
    3749              : {
    3750          372 :   int flags;
    3751              : 
    3752          372 :   flags = TFF_EXCEPTION_SPECIFICATION | TFF_DECL_SPECIFIERS
    3753              :     | TFF_TEMPLATE_HEADER;
    3754          372 :   if (verbose)
    3755          107 :     flags |= TFF_FUNCTION_DEFAULT_ARGUMENTS;
    3756          372 :   reinit_cxx_pp ();
    3757          372 :   dump_decl (cxx_pp, fndecl, flags);
    3758          372 :   return pp_ggc_formatted_text (cxx_pp);
    3759              : }
    3760              : 
    3761              : 
    3762              : static const char *
    3763            0 : code_to_string (enum tree_code c)
    3764              : {
    3765            0 :   return get_tree_code_name (c);
    3766              : }
    3767              : 
    3768              : const char *
    3769        14444 : language_to_string (enum languages c)
    3770              : {
    3771        14444 :   switch (c)
    3772              :     {
    3773              :     case lang_c:
    3774              :       return "C";
    3775              : 
    3776           12 :     case lang_cplusplus:
    3777           12 :       return "C++";
    3778              : 
    3779            0 :     default:
    3780            0 :       gcc_unreachable ();
    3781              :     }
    3782              :   return NULL;
    3783              : }
    3784              : 
    3785              : /* Return the proper printed version of a parameter to a C++ function.  */
    3786              : 
    3787              : static const char *
    3788         1563 : parm_to_string (int p)
    3789              : {
    3790         1563 :   reinit_cxx_pp ();
    3791         1563 :   if (p < 0)
    3792           30 :     pp_string (cxx_pp, "'this'");
    3793              :   else
    3794         1533 :     pp_decimal_int (cxx_pp, p + 1);
    3795         1563 :   return pp_ggc_formatted_text (cxx_pp);
    3796              : }
    3797              : 
    3798              : static const char *
    3799          332 : op_to_string (bool assop, enum tree_code p)
    3800              : {
    3801          332 :   tree id = ovl_op_identifier (assop, p);
    3802          661 :   return id ? IDENTIFIER_POINTER (id) : M_("<unknown>");
    3803              : }
    3804              : 
    3805              : /* Return a GC-allocated representation of type TYP, with verbosity VERBOSE.
    3806              : 
    3807              :    If QUOTE is non-NULL and if *QUOTE is true, then quotes are added to the
    3808              :    string in appropriate places, and *QUOTE is written to with false
    3809              :    to suppress pp_format's trailing close quote so that e.g.
    3810              :      foo_typedef {aka underlying_foo} {enum}
    3811              :    can be printed by "%qT" as:
    3812              :      `foo_typedef' {aka `underlying_foo'} {enum}
    3813              :    rather than:
    3814              :      `foo_typedef {aka underlying_foo} {enum}'
    3815              :    When adding such quotes, if POSTPROCESSED is true (for handling %H and %I)
    3816              :    then a leading open quote will be added, whereas if POSTPROCESSED is false
    3817              :    (for handling %T) then any leading quote has already been added by
    3818              :    pp_format, or is not needed due to QUOTE being NULL (for template arguments
    3819              :    within %H and %I).
    3820              : 
    3821              :    SHOW_COLOR and HIGHLIGHT_COLOR are used to determine the colorization of
    3822              :    any quotes that are added.  */
    3823              : 
    3824              : static const char *
    3825        65232 : type_to_string (tree typ, int verbose, bool postprocessed, bool *quote,
    3826              :                 bool show_color, const char *highlight_color)
    3827              : {
    3828        65232 :   int flags = 0;
    3829        65232 :   if (verbose)
    3830        10169 :     flags |= TFF_CLASS_KEY_OR_ENUM;
    3831        65232 :   flags |= TFF_TEMPLATE_HEADER;
    3832              : 
    3833        65232 :   reinit_cxx_pp ();
    3834        65232 :   pp_show_color (cxx_pp) = show_color;
    3835              : 
    3836        65232 :   if (postprocessed && quote && *quote)
    3837              :     {
    3838        20814 :       pp_begin_quote (cxx_pp, show_color);
    3839        20814 :       if (show_color && highlight_color)
    3840            0 :         pp_string (cxx_pp, colorize_start (show_color, highlight_color));
    3841              :     }
    3842              : 
    3843        65232 :   struct obstack *ob = pp_buffer (cxx_pp)->m_obstack;
    3844        65232 :   int type_start, type_len;
    3845        65232 :   type_start = obstack_object_size (ob);
    3846              : 
    3847        65232 :   dump_type (cxx_pp, typ, flags);
    3848              : 
    3849              :   /* Remember the end of the initial dump.  */
    3850        65232 :   type_len = obstack_object_size (ob) - type_start;
    3851              : 
    3852              :   /* If we're printing a type that involves typedefs, also print the
    3853              :      stripped version.  But sometimes the stripped version looks
    3854              :      exactly the same, so we don't want it after all.  To avoid printing
    3855              :      it in that case, we play ugly obstack games.  */
    3856        65218 :   if (typ && TYPE_P (typ) && typ != TYPE_CANONICAL (typ)
    3857        71500 :       && !uses_template_parms (typ))
    3858              :     {
    3859         4515 :       int aka_start, aka_len; char *p;
    3860         4515 :       tree aka = strip_typedefs (typ, NULL, STF_USER_VISIBLE);
    3861         4515 :       if (quote && *quote)
    3862         4058 :         pp_end_quote (cxx_pp, show_color);
    3863         4515 :       pp_string (cxx_pp, " {aka");
    3864         4515 :       pp_cxx_whitespace (cxx_pp);
    3865         4515 :       if (quote && *quote)
    3866         4058 :         pp_begin_quote (cxx_pp, show_color);
    3867         4515 :       if (highlight_color)
    3868         1224 :         pp_string (cxx_pp, colorize_start (show_color, highlight_color));
    3869              :       /* And remember the start of the aka dump.  */
    3870         4515 :       aka_start = obstack_object_size (ob);
    3871         4515 :       dump_type (cxx_pp, aka, flags);
    3872         4515 :       aka_len = obstack_object_size (ob) - aka_start;
    3873         4515 :       if (quote && *quote)
    3874         4058 :         pp_end_quote (cxx_pp, show_color);
    3875         4515 :       pp_right_brace (cxx_pp);
    3876         4515 :       p = (char*)obstack_base (ob);
    3877              :       /* If they are identical, cut off the aka by unwinding the obstack.  */
    3878         4515 :       if (type_len == aka_len
    3879          948 :           && memcmp (p + type_start, p+aka_start, type_len) == 0)
    3880              :         {
    3881              :           /* We can't add a '\0' here, since we may be adding a closing quote
    3882              :              below, and it would be hidden by the '\0'.
    3883              :              Instead, manually unwind the current object within the obstack
    3884              :              so that the insertion point is at the end of the type, before
    3885              :              the "' {aka".  */
    3886          770 :           int delta = type_start + type_len - obstack_object_size (ob);
    3887          770 :           gcc_assert (delta <= 0);
    3888          770 :           obstack_blank_fast (ob, delta);
    3889          770 :         }
    3890              :       else
    3891         3745 :         if (quote)
    3892              :           /* No further closing quotes are needed.  */
    3893         3718 :           *quote = false;
    3894              :     }
    3895              : 
    3896        65205 :   if (quote && *quote)
    3897              :     {
    3898        57712 :       if (show_color && highlight_color)
    3899            0 :         pp_string (cxx_pp, colorize_stop (show_color));
    3900        57712 :       pp_end_quote (cxx_pp, show_color);
    3901        57712 :       *quote = false;
    3902              :     }
    3903        65232 :   return pp_ggc_formatted_text (cxx_pp);
    3904              : }
    3905              : 
    3906              : static const char *
    3907         4010 : args_to_string (tree p, int verbose)
    3908              : {
    3909         4010 :   int flags = 0;
    3910         4010 :   if (verbose)
    3911            0 :     flags |= TFF_CLASS_KEY_OR_ENUM;
    3912              : 
    3913         4010 :   if (p == NULL_TREE)
    3914              :     return "";
    3915              : 
    3916         3118 :   if (TYPE_P (TREE_VALUE (p)))
    3917            0 :     return type_as_string_translate (p, flags);
    3918              : 
    3919         3118 :   reinit_cxx_pp ();
    3920        10030 :   for (; p; p = TREE_CHAIN (p))
    3921              :     {
    3922         3794 :       if (null_node_p (TREE_VALUE (p)))
    3923            3 :         pp_cxx_ws_string (cxx_pp, "NULL");
    3924              :       else
    3925         3791 :         dump_type (cxx_pp, error_type (TREE_VALUE (p)), flags);
    3926         3794 :       if (TREE_CHAIN (p))
    3927          676 :         pp_separate_with_comma (cxx_pp);
    3928              :     }
    3929         3118 :   return pp_ggc_formatted_text (cxx_pp);
    3930              : }
    3931              : 
    3932              : /* Pretty-print a deduction substitution (from deduction_tsubst_fntype).  P
    3933              :    is a TREE_LIST with purpose the TEMPLATE_DECL, value the template
    3934              :    arguments.  */
    3935              : 
    3936              : static const char *
    3937         1643 : subst_to_string (tree p, bool show_color)
    3938              : {
    3939         1643 :   tree decl = TREE_PURPOSE (p);
    3940         1643 :   tree targs = TREE_VALUE (p);
    3941         1643 :   tree tparms = DECL_TEMPLATE_PARMS (decl);
    3942         1643 :   int flags = (TFF_DECL_SPECIFIERS|TFF_TEMPLATE_HEADER
    3943              :                |TFF_NO_TEMPLATE_BINDINGS);
    3944              : 
    3945         1643 :   if (p == NULL_TREE)
    3946              :     return "";
    3947              : 
    3948         1643 :   reinit_cxx_pp ();
    3949         1643 :   pp_show_color (cxx_pp) = show_color;
    3950         1643 :   dump_template_decl (cxx_pp, TREE_PURPOSE (p), flags);
    3951         1643 :   dump_substitution (cxx_pp, NULL, tparms, targs, /*flags=*/0);
    3952         1643 :   return pp_ggc_formatted_text (cxx_pp);
    3953              : }
    3954              : 
    3955              : static const char *
    3956          643 : cv_to_string (tree p, int v)
    3957              : {
    3958          643 :   reinit_cxx_pp ();
    3959          643 :   cxx_pp->set_padding (v ? pp_before : pp_none);
    3960          643 :   pp_cxx_cv_qualifier_seq (cxx_pp, p);
    3961          643 :   return pp_ggc_formatted_text (cxx_pp);
    3962              : }
    3963              : 
    3964              : static const char *
    3965           67 : eh_spec_to_string (tree p, int /*v*/)
    3966              : {
    3967           67 :   int flags = 0;
    3968           67 :   reinit_cxx_pp ();
    3969           67 :   dump_exception_spec (cxx_pp, p, flags);
    3970           67 :   return pp_ggc_formatted_text (cxx_pp);
    3971              : }
    3972              : 
    3973              : /* Langhook for print_error_function.  */
    3974              : void
    3975          152 : cxx_print_error_function (diagnostics::text_sink &text_output,
    3976              :                           const char *file,
    3977              :                           const diagnostics::diagnostic_info *diagnostic)
    3978              : {
    3979          152 :   char *prefix;
    3980          152 :   if (file)
    3981          152 :     prefix = xstrdup (file);
    3982              :   else
    3983              :     prefix = NULL;
    3984          152 :   lhd_print_error_function (text_output, file, diagnostic);
    3985              : 
    3986          152 :   pp_set_prefix (text_output.get_printer (), prefix);
    3987          152 :   maybe_print_instantiation_context (text_output);
    3988          152 : }
    3989              : 
    3990              : static void
    3991       257777 : cp_diagnostic_text_starter (diagnostics::text_sink &text_output,
    3992              :                             const diagnostics::diagnostic_info *diagnostic)
    3993              : {
    3994       257777 :   pp_set_prefix (text_output.get_printer (),
    3995              :                  text_output.build_indent_prefix (true));
    3996       257777 :   text_output.report_current_module (diagnostic_location (diagnostic));
    3997       257777 :   cp_print_error_function (text_output, diagnostic);
    3998       257777 :   maybe_print_instantiation_context (text_output);
    3999       257777 :   maybe_print_constexpr_context (text_output);
    4000       257777 :   maybe_print_constraint_context (text_output);
    4001       257777 :   pp_set_prefix (text_output.get_printer (),
    4002              :                  text_output.build_prefix (*diagnostic));
    4003       257777 : }
    4004              : 
    4005              : /* Print current function onto BUFFER, in the process of reporting
    4006              :    a diagnostic message.  Called from cp_diagnostic_starter.  */
    4007              : static void
    4008       257777 : cp_print_error_function (diagnostics::text_sink &text_output,
    4009              :                          const diagnostics::diagnostic_info *diagnostic)
    4010              : {
    4011              :   /* If we are in an instantiation context, current_function_decl is likely
    4012              :      to be wrong, so just rely on print_instantiation_full_context.  */
    4013       257777 :   if (current_instantiation ())
    4014              :     return;
    4015              :   /* The above is true for constraint satisfaction also.  */
    4016       241831 :   if (current_failed_constraint)
    4017              :     return;
    4018       241560 :   diagnostics::context *const context = &text_output.get_context ();
    4019       241560 :   if (diagnostic_last_function_changed (context, diagnostic))
    4020              :     {
    4021        26241 :       pretty_printer *const pp = text_output.get_printer ();
    4022        26241 :       char *old_prefix = pp_take_prefix (pp);
    4023        26241 :       const char *file = LOCATION_FILE (diagnostic_location (diagnostic));
    4024        26241 :       tree abstract_origin = diagnostic_abstract_origin (diagnostic);
    4025        26241 :       char *new_prefix = (file && abstract_origin == NULL)
    4026        26241 :                          ? text_output.file_name_as_prefix (file) : NULL;
    4027              : 
    4028        26241 :       pp_set_prefix (pp, new_prefix);
    4029              : 
    4030        26241 :       if (current_function_decl == NULL)
    4031          984 :         pp_string (pp, _("At global scope:"));
    4032              :       else
    4033              :         {
    4034        25257 :           tree fndecl, ao;
    4035              : 
    4036        25257 :           if (abstract_origin)
    4037              :             {
    4038          404 :               ao = BLOCK_ABSTRACT_ORIGIN (abstract_origin);
    4039          404 :               gcc_assert (TREE_CODE (ao) == FUNCTION_DECL);
    4040              :               fndecl = ao;
    4041              :             }
    4042              :           else
    4043              :             fndecl = current_function_decl;
    4044              : 
    4045        25257 :           pp_printf (pp, function_category (fndecl),
    4046              :                      fndecl);
    4047              : 
    4048        51152 :           while (abstract_origin)
    4049              :             {
    4050          638 :               location_t *locus;
    4051          638 :               tree block = abstract_origin;
    4052              : 
    4053          638 :               locus = &BLOCK_SOURCE_LOCATION (block);
    4054          638 :               fndecl = NULL;
    4055          638 :               block = BLOCK_SUPERCONTEXT (block);
    4056         1404 :               while (block && TREE_CODE (block) == BLOCK
    4057         1523 :                      && BLOCK_ABSTRACT_ORIGIN (block))
    4058              :                 {
    4059          362 :                   ao = BLOCK_ABSTRACT_ORIGIN (block);
    4060          362 :                   if (TREE_CODE (ao) == FUNCTION_DECL)
    4061              :                     {
    4062              :                       fndecl = ao;
    4063              :                       break;
    4064              :                     }
    4065          128 :                   else if (TREE_CODE (ao) != BLOCK)
    4066              :                     break;
    4067              : 
    4068          128 :                   block = BLOCK_SUPERCONTEXT (block);
    4069              :                 }
    4070          638 :               if (fndecl)
    4071              :                 abstract_origin = block;
    4072              :               else
    4073              :                 {
    4074          866 :                   while (block && TREE_CODE (block) == BLOCK)
    4075          462 :                     block = BLOCK_SUPERCONTEXT (block);
    4076              : 
    4077          404 :                   if (block && TREE_CODE (block) == FUNCTION_DECL)
    4078              :                     fndecl = block;
    4079              :                   abstract_origin = NULL;
    4080              :                 }
    4081              :               if (fndecl)
    4082              :                 {
    4083          638 :                   expanded_location s = expand_location (*locus);
    4084          638 :                   pp_character (pp, ',');
    4085          638 :                   pp_newline (pp);
    4086          638 :                   if (s.file != NULL)
    4087              :                     {
    4088          638 :                       if (text_output.show_column_p () && s.column != 0)
    4089          584 :                         pp_printf (pp,
    4090              :                                    G_("    inlined from %qD at %r%s:%d:%d%R"),
    4091              :                                    fndecl,
    4092              :                                    "locus", s.file, s.line, s.column);
    4093              :                       else
    4094           54 :                         pp_printf (pp,
    4095              :                                    G_("    inlined from %qD at %r%s:%d%R"),
    4096              :                                    fndecl,
    4097              :                                    "locus", s.file, s.line);
    4098              : 
    4099              :                     }
    4100              :                   else
    4101            0 :                     pp_printf (pp, G_("    inlined from %qD"),
    4102              :                                fndecl);
    4103              :                 }
    4104              :             }
    4105        25257 :           pp_character (pp, ':');
    4106              :         }
    4107        26241 :       pp_newline (pp);
    4108              : 
    4109        26241 :       diagnostic_set_last_function (context, diagnostic);
    4110        26241 :       pp->set_prefix (old_prefix);
    4111              :     }
    4112              : }
    4113              : 
    4114              : /* Returns a description of FUNCTION using standard terminology.  The
    4115              :    result is a format string of the form "In CATEGORY %qD".  */
    4116              : 
    4117              : static const char *
    4118        25257 : function_category (tree fn)
    4119              : {
    4120              :   /* We can get called from the middle-end for diagnostics of function
    4121              :      clones.  Make sure we have language specific information before
    4122              :      dereferencing it.  */
    4123        25257 :   if (DECL_LANG_SPECIFIC (STRIP_TEMPLATE (fn))
    4124        25257 :       && DECL_FUNCTION_MEMBER_P (fn))
    4125              :     {
    4126         3293 :       if (DECL_STATIC_FUNCTION_P (fn))
    4127              :         return G_("In static member function %qD");
    4128         3126 :       else if (DECL_COPY_CONSTRUCTOR_P (fn))
    4129              :         return G_("In copy constructor %qD");
    4130         6170 :       else if (DECL_CONSTRUCTOR_P (fn))
    4131              :         return G_("In constructor %qD");
    4132         2092 :       else if (DECL_DESTRUCTOR_P (fn))
    4133              :         return G_("In destructor %qD");
    4134         2573 :       else if (LAMBDA_FUNCTION_P (fn))
    4135              :         return G_("In lambda function");
    4136         1367 :       else if (DECL_XOBJ_MEMBER_FUNCTION_P (fn))
    4137           21 :         return G_("In explicit object member function %qD");
    4138              :       else
    4139              :         return G_("In member function %qD");
    4140              :     }
    4141              :   else
    4142              :     return G_("In function %qD");
    4143              : }
    4144              : 
    4145              : /* We expected some kind of tree but instead got T and emitted a diagnostic.
    4146              :    Print the category of T (type, expression, ...) if possible.  */
    4147              : 
    4148              : void
    4149          236 : inform_tree_category (tree t)
    4150              : {
    4151          236 :   const location_t loc = location_of (t);
    4152              : 
    4153          236 :   t = maybe_get_first_fn (t);
    4154          236 :   if (TREE_CODE (t) == TYPE_DECL)
    4155           10 :     t = TREE_TYPE (t);
    4156              : 
    4157          236 :   if (TYPE_P (t))
    4158          100 :     inform (loc, "but %qE is a type", t);
    4159          136 :   else if (EXPR_P (t))
    4160            0 :     inform (loc, "but %qE is an expression", t);
    4161          136 :   else if (DECL_DECOMPOSITION_P (t) && !DECL_DECOMP_IS_BASE (t))
    4162            2 :     inform (loc, "but %qE is a structured binding", t);
    4163          134 :   else if (VAR_P (t))
    4164           46 :     inform (loc, "but %qE is a variable", t);
    4165           88 :   else if (TREE_CODE (t) == PARM_DECL)
    4166            4 :     inform (loc, "but %qE is a parameter", t);
    4167           84 :   else if (TREE_CODE (t) == FUNCTION_DECL)
    4168           24 :     inform (loc, "but %qE is a function", t);
    4169           60 :   else if (TREE_CODE (t) == FIELD_DECL)
    4170            2 :     inform (loc, "but %qE is a data member", t);
    4171           58 :   else if (DECL_FUNCTION_TEMPLATE_P (t))
    4172           10 :     inform (loc, "but %qE is a function template", t);
    4173           48 :   else if (DECL_CLASS_TEMPLATE_P (t))
    4174            6 :     inform (loc, "but %qE is a class template", t);
    4175           42 :   else if (DECL_ALIAS_TEMPLATE_P (t))
    4176            2 :     inform (loc, "but %qE is an alias template", t);
    4177           40 :   else if (variable_template_p (t))
    4178            6 :     inform (loc, "but %qE is a variable template", t);
    4179           34 :   else if (TREE_CODE (t) == NAMESPACE_DECL)
    4180           20 :     inform (loc, "but %qE is a namespace", t);
    4181           14 :   else if (TREE_CODE (t) == CONST_DECL && !DECL_TEMPLATE_PARM_P (t))
    4182            8 :     inform (loc, "but %qE is an enumerator", t);
    4183           10 :   else if (concept_definition_p (t))
    4184            4 :     inform (loc, "but %qE is a concept", t);
    4185          236 : }
    4186              : 
    4187              : /* Disable warnings about missing quoting in GCC diagnostics for
    4188              :    the pp_verbatim calls.  Their format strings deliberately don't
    4189              :    follow GCC diagnostic conventions.  */
    4190              : #if __GNUC__ >= 10
    4191              : #pragma GCC diagnostic push
    4192              : #pragma GCC diagnostic ignored "-Wformat-diag"
    4193              : #endif
    4194              : 
    4195              : /* Report the full context of a current template instantiation,
    4196              :    onto BUFFER.  */
    4197              : static void
    4198         5924 : print_instantiation_full_context (diagnostics::text_sink &text_output)
    4199              : {
    4200         5924 :   struct tinst_level *p = current_instantiation ();
    4201         5924 :   location_t location = input_location;
    4202              : 
    4203         5924 :   if (p)
    4204              :     {
    4205         5924 :       bool show_file
    4206         5924 :         = ((!text_output.show_nesting_p ())
    4207         5924 :            || text_output.show_locations_in_nesting_p ());
    4208         5924 :       char *indent = text_output.build_indent_prefix (true);
    4209         5924 :       bool expansion_stmt_p = TREE_CODE (p->tldcl) == TEMPLATE_FOR_STMT;
    4210        11929 :       pp_verbatim (text_output.get_printer (),
    4211              :                    expansion_stmt_p
    4212              :                    ? G_("%s%s%sIn instantiation of %<template for%> "
    4213              :                         "iteration %E:\n")
    4214         5924 :                    : p->list_p ()
    4215              :                    ? G_("%s%s%sIn substitution of %qS:\n")
    4216              :                    : G_("%s%s%sIn instantiation of %q#D:\n"),
    4217              :                    indent,
    4218         5915 :                    show_file ? LOCATION_FILE (location) : "",
    4219              :                    show_file ? ": " : "",
    4220              :                    expansion_stmt_p
    4221           81 :                    ? TREE_VEC_ELT (p->targs, 0)
    4222         5924 :                    : p->get_node ());
    4223         5924 :       free (indent);
    4224         5924 :       location = p->locus;
    4225         5924 :       p = p->next;
    4226              :     }
    4227              : 
    4228         5924 :   print_instantiation_partial_context (text_output, p, location);
    4229         5924 : }
    4230              : 
    4231              : static void
    4232        14496 : print_location (diagnostics::text_sink &text_output,
    4233              :                 location_t loc)
    4234              : {
    4235        14496 :   expanded_location xloc = expand_location (loc);
    4236        14496 :   pretty_printer *const pp = text_output.get_printer ();
    4237        14496 :   if (text_output.show_column_p ())
    4238         7853 :     pp_verbatim (pp, G_("%r%s:%d:%d:%R   "),
    4239              :                  "locus", xloc.file, xloc.line, xloc.column);
    4240              :   else
    4241         6643 :     pp_verbatim (pp, G_("%r%s:%d:%R   "),
    4242              :                  "locus", xloc.file, xloc.line);
    4243        14496 : }
    4244              : 
    4245              : /* A RAII class for use when emitting a line of contextual information
    4246              :    via pp_verbatim to a diagnostics::text_sink to add before/after
    4247              :    behaviors to the pp_verbatim calls.
    4248              : 
    4249              :    If the text output has show_nesting_p (), then the ctor prints
    4250              :    leading indentation and a bullet point, and the dtor prints
    4251              :    the location on a new line, and calls diagnostic_show_locus, both
    4252              :    with indentation (and no bullet point).
    4253              : 
    4254              :    Otherwise (when the text output has !show_nesting_p), the ctor prints
    4255              :    the location as leading information on the same line, and the
    4256              :    dtor optionally calls diagnostic_show_locus.  */
    4257              : 
    4258              : class auto_context_line
    4259              : {
    4260              : public:
    4261        14532 :   auto_context_line (diagnostics::text_sink &text_output,
    4262              :                      location_t loc,
    4263              :                      bool show_locus = false)
    4264        14532 :   : m_text_output (text_output),
    4265        14532 :     m_loc (loc),
    4266        14532 :     m_show_locus (show_locus),
    4267        14532 :     m_nesting_level (text_output.get_context ().get_diagnostic_nesting_level ()),
    4268        14532 :     m_location_printed (false)
    4269              :   {
    4270        14532 :     char *indent = m_text_output.build_indent_prefix (true);
    4271        14532 :     pp_verbatim (m_text_output.get_printer (), indent);
    4272        14532 :     free (indent);
    4273        14532 :     if (m_nesting_level == 0 || !m_text_output.show_nesting_p ())
    4274              :       {
    4275        14496 :         print_location (m_text_output, m_loc);
    4276        14496 :         m_location_printed = true;
    4277              :       }
    4278        14532 :   }
    4279        14532 :   ~auto_context_line ()
    4280              :   {
    4281        14532 :     pretty_printer *const pp = m_text_output.get_printer ();
    4282        14532 :     if (m_text_output.show_nesting_p ())
    4283              :       {
    4284           47 :         if (m_text_output.show_locations_in_nesting_p ())
    4285              :           {
    4286           11 :             char *indent = m_text_output.build_indent_prefix (false);
    4287           11 :             if (!m_location_printed)
    4288              :               {
    4289            0 :                 pp_verbatim (pp, indent);
    4290            0 :                 print_location (m_text_output, m_loc);
    4291            0 :                 pp_newline (pp);
    4292            0 :                 m_location_printed = true;
    4293              :               }
    4294              : 
    4295           11 :             char *saved_prefix = pp_take_prefix (pp);
    4296           11 :             pp_set_prefix (pp, indent);
    4297           11 :             gcc_rich_location rich_loc (m_loc);
    4298           11 :             diagnostic_show_locus (&m_text_output.get_context (),
    4299           11 :                                    m_text_output.get_source_printing_options (),
    4300              :                                    &rich_loc,
    4301              :                                    diagnostics::kind::note, pp);
    4302           11 :             pp_set_prefix (pp, saved_prefix);
    4303           11 :           }
    4304              :       }
    4305        14485 :     else if (m_show_locus)
    4306              :       {
    4307         7925 :         char *saved_prefix = pp_take_prefix (pp);
    4308         7925 :         pp_set_prefix (pp, nullptr);
    4309         7925 :         gcc_rich_location rich_loc (m_loc);
    4310         7925 :         diagnostic_show_locus (&m_text_output.get_context (),
    4311         7925 :                                m_text_output.get_source_printing_options (),
    4312              :                                &rich_loc,
    4313              :                                diagnostics::kind::note, pp);
    4314         7925 :         pp_set_prefix (pp, saved_prefix);
    4315         7925 :       }
    4316        14532 :   }
    4317              : private:
    4318              :   diagnostics::text_sink &m_text_output;
    4319              :   location_t m_loc;
    4320              :   bool m_show_locus;
    4321              :   int m_nesting_level;
    4322              :   bool m_location_printed;
    4323              : };
    4324              : 
    4325              : /* Helper function of print_instantiation_partial_context() that
    4326              :    prints a single line of instantiation context.  */
    4327              : 
    4328              : static void
    4329         7945 : print_instantiation_partial_context_line (diagnostics::text_sink &text_output,
    4330              :                                           struct tinst_level *t,
    4331              :                                           location_t loc, bool recursive_p)
    4332              : {
    4333         7945 :   if (loc == UNKNOWN_LOCATION)
    4334            0 :     return;
    4335              : 
    4336         7945 :   auto_context_line sentinel (text_output, loc, true);
    4337              : 
    4338         7945 :   pretty_printer *const pp = text_output.get_printer ();
    4339              : 
    4340         7945 :   if (t != NULL)
    4341              :     {
    4342         2021 :       if (TREE_CODE (t->tldcl) == TEMPLATE_FOR_STMT)
    4343            0 :         pp_verbatim (pp,
    4344              :                      recursive_p
    4345              :                      ? G_("recursively required from %<template for%> "
    4346              :                           "iteration %E\n")
    4347              :                      : G_("required from %<template for%> iteration %E\n"),
    4348            0 :                      TREE_VEC_ELT (t->targs, 0));
    4349         2021 :       else if (t->list_p ())
    4350          820 :         pp_verbatim (pp,
    4351              :                      recursive_p
    4352              :                      ? G_("recursively required by substitution of %qS\n")
    4353              :                      : G_("required by substitution of %qS\n"),
    4354              :                      t->get_node ());
    4355              :       else
    4356         3327 :         pp_verbatim (pp,
    4357              :                      recursive_p
    4358              :                      ? G_("recursively required from %q#D\n")
    4359              :                      : G_("required from %q#D\n"),
    4360              :                      t->get_node ());
    4361              :     }
    4362              :   else
    4363              :     {
    4364        11848 :       pp_verbatim (pp,
    4365              :                    recursive_p
    4366              :                    ? G_("recursively required from here\n")
    4367              :                    : G_("required from here\n"));
    4368              :     }
    4369         7945 : }
    4370              : 
    4371              : /* Same as print_instantiation_full_context but less verbose.  */
    4372              : 
    4373              : static void
    4374         5924 : print_instantiation_partial_context (diagnostics::text_sink &text_output,
    4375              :                                      struct tinst_level *t0, location_t loc)
    4376              : {
    4377         5924 :   struct tinst_level *t;
    4378         5924 :   int n_total = 0;
    4379         5924 :   int n;
    4380         5924 :   location_t prev_loc = loc;
    4381              : 
    4382        40867 :   for (t = t0; t != NULL; t = t->next)
    4383        34943 :     if (prev_loc != t->locus)
    4384              :       {
    4385         1952 :         prev_loc = t->locus;
    4386         1952 :         n_total++;
    4387              :       }
    4388              : 
    4389         5924 :   t = t0;
    4390              : 
    4391         5924 :   if (template_backtrace_limit
    4392         5924 :       && n_total > template_backtrace_limit)
    4393              :     {
    4394            0 :       int skip = n_total - template_backtrace_limit;
    4395            0 :       int head = template_backtrace_limit / 2;
    4396              : 
    4397              :       /* Avoid skipping just 1.  If so, skip 2.  */
    4398            0 :       if (skip == 1)
    4399              :        {
    4400            0 :          skip = 2;
    4401            0 :          head = (template_backtrace_limit - 1) / 2;
    4402              :        }
    4403              : 
    4404            0 :       for (n = 0; n < head; n++)
    4405              :         {
    4406            0 :           gcc_assert (t != NULL);
    4407            0 :           if (loc != t->locus)
    4408            0 :             print_instantiation_partial_context_line (text_output, t, loc,
    4409              :                                                       /*recursive_p=*/false);
    4410            0 :           loc = t->locus;
    4411            0 :           t = t->next;
    4412              :         }
    4413            0 :       if (t != NULL && skip > 0)
    4414              :         {
    4415            0 :           auto_context_line sentinel (text_output, loc);
    4416            0 :           pp_verbatim (text_output.get_printer (),
    4417              :                        G_("[ skipping %d instantiation contexts,"
    4418              :                           " use -ftemplate-backtrace-limit=0 to disable ]\n"),
    4419              :                        skip);
    4420            0 :           do {
    4421            0 :             loc = t->locus;
    4422            0 :             t = t->next;
    4423            0 :           } while (t != NULL && --skip > 0);
    4424            0 :         }
    4425              :     }
    4426              : 
    4427         7945 :   while (t != NULL)
    4428              :     {
    4429        34943 :       while (t->next != NULL && t->locus == t->next->locus)
    4430              :         {
    4431              :           loc = t->locus;
    4432              :           t = t->next;
    4433              :         }
    4434         2021 :       print_instantiation_partial_context_line (text_output, t, loc,
    4435         2021 :                                                 t->locus == loc);
    4436         2021 :       loc = t->locus;
    4437         2021 :       t = t->next;
    4438              :     }
    4439         5924 :   print_instantiation_partial_context_line (text_output, NULL, loc,
    4440              :                                             /*recursive_p=*/false);
    4441         5924 : }
    4442              : 
    4443              : /* Called from cp_thing to print the template context for an error.  */
    4444              : static void
    4445       257929 : maybe_print_instantiation_context (diagnostics::text_sink &text_output)
    4446              : {
    4447       257929 :   if (!problematic_instantiation_changed () || current_instantiation () == 0)
    4448              :     return;
    4449              : 
    4450         5924 :   record_last_problematic_instantiation ();
    4451         5924 :   print_instantiation_full_context (text_output);
    4452              : }
    4453              : 
    4454              : /* Report what constexpr call(s) we're trying to expand, if any.  */
    4455              : 
    4456              : void
    4457       257777 : maybe_print_constexpr_context (diagnostics::text_sink &text_output)
    4458              : {
    4459       257777 :   vec<tree> call_stack = cx_error_context ();
    4460       257777 :   unsigned ix;
    4461       257777 :   tree t;
    4462              : 
    4463       520361 :   FOR_EACH_VEC_ELT (call_stack, ix, t)
    4464              :     {
    4465         4807 :       const char *s = expr_as_string (t, 0);
    4466         4807 :       pretty_printer *const pp = text_output.get_printer ();
    4467         4807 :       auto_context_line sentinel (text_output, EXPR_LOCATION (t));
    4468         4807 :       pp_verbatim (pp,
    4469              :                    G_("in %<constexpr%> expansion of %qs"),
    4470              :                    s);
    4471         4807 :       pp_newline (pp);
    4472         4807 :     }
    4473       257777 : }
    4474              : 
    4475              : 
    4476              : static void
    4477          643 : print_constrained_decl_info (diagnostics::text_sink &text_output,
    4478              :                              tree decl)
    4479              : {
    4480          643 :   auto_context_line sentinel (text_output, DECL_SOURCE_LOCATION (decl));
    4481          643 :   pretty_printer *const pp = text_output.get_printer ();
    4482          643 :   pp_verbatim (pp, G_("required by the constraints of %q#D\n"), decl);
    4483          643 : }
    4484              : 
    4485              : static void
    4486          818 : print_concept_check_info (diagnostics::text_sink &text_output,
    4487              :                           tree expr, tree map, tree args)
    4488              : {
    4489          818 :   gcc_assert (concept_check_p (expr));
    4490              : 
    4491          818 :   tree tmpl = TREE_OPERAND (expr, 0);
    4492              : 
    4493          818 :   auto_context_line sentinel (text_output, DECL_SOURCE_LOCATION (tmpl));
    4494              : 
    4495          818 :   cxx_pretty_printer *const pp
    4496          818 :     = (cxx_pretty_printer *)text_output.get_printer ();
    4497          818 :   pp_verbatim (pp, G_("required for the satisfaction of %qE"), expr);
    4498          818 :   if (map && map != error_mark_node)
    4499              :     {
    4500          800 :       tree subst_map = tsubst_parameter_mapping (map, args, tf_none, NULL_TREE);
    4501          802 :       pp_cxx_parameter_mapping (pp, (subst_map != error_mark_node
    4502              :                                      ? subst_map : map));
    4503              :     }
    4504          818 :   pp_newline (pp);
    4505          818 : }
    4506              : 
    4507              : /* Diagnose the entry point into the satisfaction error. Returns the next
    4508              :    context, if any.  */
    4509              : 
    4510              : static tree
    4511         1393 : print_constraint_context_head (diagnostics::text_sink &text_output,
    4512              :                                tree cxt, tree args)
    4513              : {
    4514         1393 :   tree src = TREE_VALUE (cxt);
    4515         1393 :   if (!src)
    4516              :     {
    4517            0 :       auto_context_line sentinel (text_output, input_location);
    4518            0 :       pretty_printer *const pp = text_output.get_printer ();
    4519            0 :       pp_verbatim (pp, G_("required for constraint satisfaction\n"));
    4520            0 :       return NULL_TREE;
    4521            0 :     }
    4522         1393 :   if (DECL_P (src))
    4523              :     {
    4524          643 :       print_constrained_decl_info (text_output, src);
    4525          643 :       return NULL_TREE;
    4526              :     }
    4527              :   else
    4528              :     {
    4529          750 :       print_concept_check_info (text_output, src, TREE_PURPOSE (cxt), args);
    4530          750 :       return TREE_CHAIN (cxt);
    4531              :     }
    4532              : }
    4533              : 
    4534              : static void
    4535          321 : print_requires_expression_info (diagnostics::text_sink &text_output,
    4536              :                                 tree constr, tree args)
    4537              : {
    4538              : 
    4539          321 :   tree expr = ATOMIC_CONSTR_EXPR (constr);
    4540          321 :   tree map = ATOMIC_CONSTR_MAP (constr);
    4541          321 :   map = tsubst_parameter_mapping (map, args, tf_none, NULL_TREE);
    4542          321 :   if (map == error_mark_node)
    4543            2 :     return;
    4544              : 
    4545          319 :   auto_context_line sentinel (text_output, cp_expr_loc_or_input_loc (expr));
    4546          319 :   cxx_pretty_printer *const pp
    4547          319 :     = static_cast <cxx_pretty_printer *> (text_output.get_printer ());
    4548              : 
    4549          319 :   tree parms = REQUIRES_EXPR_PARMS (expr);
    4550          319 :   pp_verbatim (pp, parms ? G_("in requirements with ")
    4551              :                          : G_("in requirements "));
    4552          925 :   while (parms)
    4553              :     {
    4554          287 :       pp_verbatim (pp, "%q#D", parms);
    4555          287 :       if (TREE_CHAIN (parms))
    4556           97 :         pp_separate_with_comma (pp);
    4557          287 :       parms = TREE_CHAIN (parms);
    4558              :     }
    4559          319 :   pp_cxx_parameter_mapping (pp, map);
    4560              : 
    4561          319 :   pp_verbatim (pp, "\n");
    4562          319 : }
    4563              : 
    4564              : void
    4565         1420 : maybe_print_single_constraint_context (diagnostics::text_sink &text_output,
    4566              :                                        tree failed)
    4567              : {
    4568         1420 :   if (!failed)
    4569              :     return;
    4570              : 
    4571         1420 :   tree constr = TREE_VALUE (failed);
    4572         1420 :   if (!constr || constr == error_mark_node)
    4573              :     return;
    4574         1420 :   tree cxt = CONSTR_CONTEXT (constr);
    4575         1420 :   if (!cxt)
    4576              :     return;
    4577         1393 :   tree args = TREE_PURPOSE (failed);
    4578              : 
    4579              :   /* Print the stack of requirements.  */
    4580         1393 :   cxt = print_constraint_context_head (text_output, cxt, args);
    4581         3540 :   while (cxt && !DECL_P (TREE_VALUE (cxt)))
    4582              :     {
    4583           68 :       tree expr = TREE_VALUE (cxt);
    4584           68 :       tree map = TREE_PURPOSE (cxt);
    4585           68 :       print_concept_check_info (text_output, expr, map, args);
    4586           68 :       cxt = TREE_CHAIN (cxt);
    4587              :     }
    4588              : 
    4589              :   /* For certain constraints, we can provide additional context.  */
    4590         1393 :   if (TREE_CODE (constr) == ATOMIC_CONSTR
    4591         1393 :       && TREE_CODE (ATOMIC_CONSTR_EXPR (constr)) == REQUIRES_EXPR)
    4592          321 :     print_requires_expression_info (text_output, constr, args);
    4593              : }
    4594              : 
    4595              : void
    4596       257780 : maybe_print_constraint_context (diagnostics::text_sink &text_output)
    4597              : {
    4598       257780 :   if (!current_failed_constraint)
    4599              :     return;
    4600              : 
    4601         1420 :   tree cur = current_failed_constraint;
    4602              : 
    4603              :   /* Recursively print nested contexts.  */
    4604         1420 :   current_failed_constraint = TREE_CHAIN (current_failed_constraint);
    4605         1420 :   if (current_failed_constraint)
    4606            3 :     maybe_print_constraint_context (text_output);
    4607              : 
    4608              :   /* Print this context.  */
    4609         1420 :   maybe_print_single_constraint_context (text_output, cur);
    4610              : }
    4611              : 
    4612              : /* Return true iff TYPE_A and TYPE_B are template types that are
    4613              :    meaningful to compare.  */
    4614              : 
    4615              : static bool
    4616        11634 : comparable_template_types_p (tree type_a, tree type_b)
    4617              : {
    4618        11634 :   if (!CLASS_TYPE_P (type_a))
    4619              :     return false;
    4620         1374 :   if (!CLASS_TYPE_P (type_b))
    4621              :     return false;
    4622              : 
    4623          442 :   tree tinfo_a = TYPE_TEMPLATE_INFO (type_a);
    4624          442 :   tree tinfo_b = TYPE_TEMPLATE_INFO (type_b);
    4625          442 :   if (!tinfo_a || !tinfo_b)
    4626              :     return false;
    4627              : 
    4628          279 :   return TI_TEMPLATE (tinfo_a) == TI_TEMPLATE (tinfo_b);
    4629              : }
    4630              : 
    4631              : /* Start a new line indented by SPC spaces on PP.  */
    4632              : 
    4633              : static void
    4634          228 : newline_and_indent (pretty_printer *pp, int spc)
    4635              : {
    4636          228 :   pp_newline (pp);
    4637         1248 :   for (int i = 0; i < spc; i++)
    4638          792 :     pp_space (pp);
    4639          228 : }
    4640              : 
    4641              : /* Generate a GC-allocated string for ARG, an expression or type.  */
    4642              : 
    4643              : static const char *
    4644          682 : arg_to_string (tree arg, bool verbose)
    4645              : {
    4646          682 :   if (TYPE_P (arg))
    4647          420 :     return type_to_string (arg, verbose, true, NULL, false);
    4648              :   else
    4649          262 :     return expr_to_string (arg);
    4650              : }
    4651              : 
    4652              : /* Subroutine to type_to_string_with_compare and
    4653              :    print_template_tree_comparison.
    4654              : 
    4655              :    Print a representation of ARG (an expression or type) to PP,
    4656              :    colorizing it if PP->show_color, using HIGHLIGHT_COLOR,
    4657              :    or "type-diff" if the latter is NULL.  */
    4658              : 
    4659              : static void
    4660          670 : print_nonequal_arg (pretty_printer *pp, tree arg, bool verbose,
    4661              :                     const char *highlight_color)
    4662              : {
    4663          670 :   if (!highlight_color)
    4664           10 :     highlight_color = "type-diff";
    4665         1340 :   pp_printf (pp, "%r%s%R",
    4666              :              highlight_color,
    4667              :              (arg
    4668          670 :               ? arg_to_string (arg, verbose)
    4669              :               : G_("(no argument)")));
    4670          670 : }
    4671              : 
    4672              : /* Recursively print template TYPE_A to PP, as compared to template TYPE_B.
    4673              : 
    4674              :    The types must satisfy comparable_template_types_p.
    4675              : 
    4676              :    If INDENT is 0, then this is equivalent to type_to_string (TYPE_A), but
    4677              :    potentially colorizing/eliding in comparison with TYPE_B.
    4678              : 
    4679              :    For example given types:
    4680              :      vector<map<int,double>>
    4681              :    and
    4682              :      vector<map<int,float>>
    4683              :    then the result on PP would be:
    4684              :      vector<map<[...],double>>
    4685              :    with type elision, and:
    4686              :      vector<map<int,double>>
    4687              :    without type elision.
    4688              : 
    4689              :    In both cases the parts of TYPE that differ from PEER will be colorized
    4690              :    if pp_show_color (pp) is true.  In the above example, this would be
    4691              :    "double".
    4692              : 
    4693              :    If INDENT is non-zero, then the types are printed in a tree-like form
    4694              :    which shows both types.  In the above example, the result on PP would be:
    4695              : 
    4696              :      vector<
    4697              :        map<
    4698              :          [...],
    4699              :          [double != float]>>
    4700              : 
    4701              :    and without type-elision would be:
    4702              : 
    4703              :      vector<
    4704              :        map<
    4705              :          int,
    4706              :          [double != float]>>
    4707              : 
    4708              :    As before, the differing parts of the types are colorized if
    4709              :    pp_show_color (pp) is true ("double" and "float" in this example).
    4710              : 
    4711              :    Template arguments in which both types are using the default arguments
    4712              :    are not printed; if at least one of the two types is using a non-default
    4713              :    argument, then that argument is printed (or both arguments for the
    4714              :    tree-like print format).  */
    4715              : 
    4716              : static void
    4717          497 : print_template_differences (pretty_printer *pp, tree type_a, tree type_b,
    4718              :                             bool verbose, int indent,
    4719              :                             const char *highlight_color_a,
    4720              :                             const char *highlight_color_b)
    4721              : {
    4722          497 :   if (indent)
    4723           85 :     newline_and_indent (pp, indent);
    4724              : 
    4725          497 :   tree tinfo_a = TYPE_TEMPLATE_INFO (type_a);
    4726          497 :   tree tinfo_b = TYPE_TEMPLATE_INFO (type_b);
    4727              : 
    4728          497 :   pp_printf (pp, "%s<",
    4729          497 :              IDENTIFIER_POINTER (DECL_NAME (TI_TEMPLATE (tinfo_a))));
    4730              : 
    4731          497 :   tree args_a = TI_ARGS (tinfo_a);
    4732          497 :   tree args_b = TI_ARGS (tinfo_b);
    4733          497 :   gcc_assert (TREE_CODE (args_a) == TREE_VEC);
    4734          497 :   gcc_assert (TREE_CODE (args_b) == TREE_VEC);
    4735          497 :   int flags = 0;
    4736          497 :   int len_a = get_non_default_template_args_count (args_a, flags);
    4737          497 :   args_a = INNERMOST_TEMPLATE_ARGS (args_a);
    4738          497 :   int len_b = get_non_default_template_args_count (args_b, flags);
    4739          497 :   args_b = INNERMOST_TEMPLATE_ARGS (args_b);
    4740              :   /* Determine the maximum range of args for which non-default template args
    4741              :      were used; beyond this, only default args (if any) were used, and so
    4742              :      they will be equal from this point onwards.
    4743              :      One of the two peers might have used default arguments within this
    4744              :      range, but the other will be using non-default arguments, and so
    4745              :      it's more readable to print both within this range, to highlight
    4746              :      the differences.  */
    4747          497 :   int len_max = MAX (len_a, len_b);
    4748          497 :   gcc_assert (TREE_CODE (args_a) == TREE_VEC);
    4749          497 :   gcc_assert (TREE_CODE (args_b) == TREE_VEC);
    4750         1224 :   for (int idx = 0; idx < len_max; idx++)
    4751              :     {
    4752          727 :       if (idx)
    4753          230 :         pp_character (pp, ',');
    4754              : 
    4755          727 :       tree arg_a = TREE_VEC_ELT (args_a, idx);
    4756          727 :       tree arg_b = TREE_VEC_ELT (args_b, idx);
    4757          727 :       if (arg_a == arg_b)
    4758              :         {
    4759          128 :           if (indent)
    4760           39 :             newline_and_indent (pp, indent + 2);
    4761              :           /* Can do elision here, printing "[...]".  */
    4762          128 :           if (flag_elide_type)
    4763          116 :             pp_string (pp, G_("[...]"));
    4764              :           else
    4765           12 :             pp_string (pp, arg_to_string (arg_a, verbose));
    4766              :         }
    4767              :       else
    4768              :         {
    4769          599 :           int new_indent = indent ? indent + 2 : 0;
    4770          599 :           if (comparable_template_types_p (arg_a, arg_b))
    4771           33 :             print_template_differences (pp, arg_a, arg_b, verbose, new_indent,
    4772              :                                         highlight_color_a, highlight_color_b);
    4773              :           else
    4774          566 :             if (indent)
    4775              :               {
    4776          104 :                 newline_and_indent (pp, indent + 2);
    4777          104 :                 pp_character (pp, '[');
    4778          104 :                 print_nonequal_arg (pp, arg_a, verbose, highlight_color_a);
    4779          104 :                 pp_string (pp, " != ");
    4780          104 :                 print_nonequal_arg (pp, arg_b, verbose, highlight_color_b);
    4781          104 :                 pp_character (pp, ']');
    4782              :               }
    4783              :             else
    4784          462 :               print_nonequal_arg (pp, arg_a, verbose, highlight_color_a);
    4785              :         }
    4786              :     }
    4787          497 :   pp_printf (pp, ">");
    4788          497 : }
    4789              : 
    4790              : /* As type_to_string, but for a template, potentially colorizing/eliding
    4791              :    in comparison with PEER.
    4792              :    For example, if TYPE is map<int,double> and PEER is map<int,int>,
    4793              :    then the resulting string would be:
    4794              :      map<[...],double>
    4795              :    with type elision, and:
    4796              :      map<int,double>
    4797              :    without type elision.
    4798              : 
    4799              :    In both cases the parts of TYPE that differ from PEER will be colorized
    4800              :    if SHOW_COLOR is true.  In the above example, this would be "double".
    4801              : 
    4802              :    Template arguments in which both types are using the default arguments
    4803              :    are not printed; if at least one of the two types is using a non-default
    4804              :    argument, then both arguments are printed.
    4805              : 
    4806              :    The resulting string is in a GC-allocated buffer.  */
    4807              : 
    4808              : static const char *
    4809          390 : type_to_string_with_compare (tree type, tree peer, bool verbose,
    4810              :                              bool show_color,
    4811              :                              const char *this_highlight_color,
    4812              :                              const char *peer_highlight_color)
    4813              : {
    4814          390 :   pretty_printer inner_pp;
    4815          390 :   pretty_printer *pp = &inner_pp;
    4816          390 :   pp_show_color (pp) = show_color;
    4817              : 
    4818          390 :   print_template_differences (pp, type, peer, verbose, 0,
    4819              :                               this_highlight_color, peer_highlight_color);
    4820          390 :   return pp_ggc_formatted_text (pp);
    4821          390 : }
    4822              : 
    4823              : /* Recursively print a tree-like comparison of TYPE_A and TYPE_B to PP,
    4824              :    indented by INDENT spaces.
    4825              : 
    4826              :    For example given types:
    4827              : 
    4828              :      vector<map<int,double>>
    4829              : 
    4830              :    and
    4831              : 
    4832              :      vector<map<double,float>>
    4833              : 
    4834              :    the output with type elision would be:
    4835              : 
    4836              :      vector<
    4837              :        map<
    4838              :          [...],
    4839              :          [double != float]>>
    4840              : 
    4841              :    and without type-elision would be:
    4842              : 
    4843              :      vector<
    4844              :        map<
    4845              :          int,
    4846              :          [double != float]>>
    4847              : 
    4848              :    TYPE_A and TYPE_B must both be comparable template types
    4849              :    (as per comparable_template_types_p).
    4850              : 
    4851              :    Template arguments in which both types are using the default arguments
    4852              :    are not printed; if at least one of the two types is using a non-default
    4853              :    argument, then both arguments are printed.  */
    4854              : 
    4855              : static void
    4856           74 : print_template_tree_comparison (pretty_printer *pp, tree type_a, tree type_b,
    4857              :                                 bool verbose, int indent,
    4858              :                                 const char *highlight_color_a,
    4859              :                                 const char *highlight_color_b)
    4860              : {
    4861            0 :   print_template_differences (pp, type_a, type_b, verbose, indent,
    4862              :                               highlight_color_a,
    4863              :                               highlight_color_b);
    4864            0 : }
    4865              : 
    4866              : /* Subroutine for use in a format_postprocessor::handle
    4867              :    implementation.  Adds a chunk to the end of
    4868              :    formatted output, so that it will be printed
    4869              :    by pp_output_formatted_text.  */
    4870              : 
    4871              : static void
    4872           74 : append_formatted_chunk (pretty_printer *pp, const char *content)
    4873              : {
    4874           74 :   output_buffer *buffer = pp_buffer (pp);
    4875           74 :   pp_formatted_chunks *chunk_array = buffer->m_cur_formatted_chunks;
    4876            0 :   chunk_array->append_formatted_chunk (buffer->m_chunk_obstack, content);
    4877            0 : }
    4878              : 
    4879              : #if __GNUC__ >= 10
    4880              : #pragma GCC diagnostic pop
    4881              : #endif
    4882              : 
    4883              : /* If we had %H and %I, and hence deferred printing them,
    4884              :    print them now, storing the result into custom_token_value
    4885              :    for the custom pp_token.  Quote them if 'q' was provided.
    4886              :    Also print the difference in tree form, adding it as
    4887              :    an additional chunk.  */
    4888              : 
    4889              : void
    4890       390477 : cxx_format_postprocessor::handle (pretty_printer *pp)
    4891              : {
    4892              :   /* If we have one of %H and %I, the other should have
    4893              :      been present.  */
    4894       390477 :   if (m_type_a.m_tree || m_type_b.m_tree)
    4895              :     {
    4896        10601 :       const bool show_highlight_colors = pp_show_highlight_colors (pp);
    4897        10601 :       const char *percent_h
    4898        10601 :         = show_highlight_colors ? highlight_colors::percent_h : nullptr;
    4899            2 :       const char *percent_i
    4900              :         = show_highlight_colors ? highlight_colors::percent_i : nullptr;
    4901              :       /* Avoid reentrancy issues by working with a copy of
    4902              :          m_type_a and m_type_b, resetting them now.  */
    4903        10601 :       deferred_printed_type type_a = std::move (m_type_a);
    4904        10601 :       deferred_printed_type type_b = std::move (m_type_b);
    4905        10601 :       m_type_a = deferred_printed_type ();
    4906        10601 :       m_type_b = deferred_printed_type ();
    4907              : 
    4908        10601 :       gcc_assert (type_a.m_token_list);
    4909        10601 :       gcc_assert (type_b.m_token_list);
    4910              : 
    4911        10601 :       bool show_color = pp_show_color (pp);
    4912              : 
    4913        10601 :       const char *type_a_text;
    4914        10601 :       const char *type_b_text;
    4915              : 
    4916        10601 :       if (comparable_template_types_p (type_a.m_tree, type_b.m_tree))
    4917              :         {
    4918          194 :           type_a_text = type_to_string_with_compare
    4919          194 :             (type_a.m_tree, type_b.m_tree,
    4920              :              type_a.m_verbose, show_color,
    4921              :              percent_h, percent_i);
    4922          194 :           type_b_text = type_to_string_with_compare
    4923          194 :             (type_b.m_tree, type_a.m_tree,
    4924              :              type_b.m_verbose, show_color,
    4925              :              percent_i, percent_h);
    4926              : 
    4927          194 :           if (flag_diagnostics_show_template_tree)
    4928              :             {
    4929           74 :               pretty_printer inner_pp;
    4930           74 :               pp_show_color (&inner_pp) = pp_show_color (pp);
    4931           74 :               print_template_tree_comparison
    4932           74 :                 (&inner_pp, type_a.m_tree, type_b.m_tree, type_a.m_verbose, 2,
    4933              :                  percent_h, percent_i);
    4934           74 :               append_formatted_chunk (pp, pp_ggc_formatted_text (&inner_pp));
    4935           74 :             }
    4936              :         }
    4937              :       else
    4938              :         {
    4939              :           /* If the types were not comparable (or if only one of %H/%I was
    4940              :              provided), they are printed normally, and no difference tree
    4941              :              is printed.  */
    4942        10407 :           type_a_text = type_to_string (type_a.m_tree, type_a.m_verbose,
    4943              :                                         true, &type_a.m_quote, show_color,
    4944              :                                         percent_h);
    4945        10407 :           type_b_text = type_to_string (type_b.m_tree, type_b.m_verbose,
    4946              :                                         true, &type_b.m_quote, show_color,
    4947              :                                         percent_i);
    4948              :         }
    4949              : 
    4950        10601 :       type_a.set_text_for_token_list (type_a_text, type_a.m_quote);
    4951        10601 :       type_b.set_text_for_token_list (type_b_text, type_b.m_quote);
    4952        10601 :    }
    4953       390477 : }
    4954              : 
    4955              : /* Subroutine for handling %H and %I, to support i18n of messages like:
    4956              : 
    4957              :     error_at (loc, "could not convert %qE from %qH to %qI",
    4958              :                expr, type_a, type_b);
    4959              : 
    4960              :    so that we can print things like:
    4961              : 
    4962              :      could not convert 'foo' from 'map<int,double>' to 'map<int,int>'
    4963              : 
    4964              :    and, with type-elision:
    4965              : 
    4966              :      could not convert 'foo' from 'map<[...],double>' to 'map<[...],int>'
    4967              : 
    4968              :    (with color-coding of the differences between the types).
    4969              : 
    4970              :    The %H and %I format codes are peers: both must be present,
    4971              :    and they affect each other.  Hence to handle them, we must
    4972              :    delay printing until we have both, deferring the printing to
    4973              :    pretty_printer's m_format_postprocessor hook.
    4974              : 
    4975              :    This is called in phase 2 of pp_format, when it is accumulating
    4976              :    a series of pp_token lists.  Since we have to interact with the
    4977              :    fiddly quoting logic for "aka", we store the pp_token_list *
    4978              :    and in the m_format_postprocessor hook we generate text for the type
    4979              :    (possibly with quotes and colors), then replace all tokens in that token list
    4980              :    (such as [BEGIN_QUOTE, END_QUOTE]) with a text token containing the
    4981              :    freshly generated text.
    4982              : 
    4983              :    We also need to stash whether a 'q' prefix was provided (the QUOTE
    4984              :    param)  so that we can add the quotes when writing out the delayed
    4985              :    chunk.  */
    4986              : 
    4987              : static void
    4988        21202 : defer_phase_2_of_type_diff (deferred_printed_type *deferred,
    4989              :                             tree type,
    4990              :                             pp_token_list &formatted_token_list,
    4991              :                             bool verbose, bool quote)
    4992              : {
    4993        21202 :   gcc_assert (deferred->m_tree == NULL_TREE);
    4994        21202 :   *deferred = deferred_printed_type (type, formatted_token_list,
    4995        21202 :                                      verbose, quote);
    4996        21202 : }
    4997              : 
    4998              : /* Implementation of pp_markup::element_quoted_type::print_type
    4999              :    for C++/ObjC++.  */
    5000              : 
    5001              : void
    5002          752 : pp_markup::element_quoted_type::print_type (pp_markup::context &ctxt)
    5003              : {
    5004          752 :   const char *highlight_color
    5005          752 :     = pp_show_highlight_colors (&ctxt.m_pp) ? m_highlight_color : nullptr;
    5006          752 :   const char *result
    5007         1504 :     = type_to_string (m_type, false, false, &ctxt.m_quoted,
    5008          752 :                       pp_show_color (&ctxt.m_pp), highlight_color);
    5009          752 :   pp_string (&ctxt.m_pp, result);
    5010          752 : }
    5011              : 
    5012              : /* Called from output_format -- during diagnostic message processing --
    5013              :    to handle C++ specific format specifier with the following meanings:
    5014              :    %A   function argument-list.
    5015              :    %C   tree code.
    5016              :    %D   declaration.
    5017              :    %E   expression.
    5018              :    %F   function declaration.
    5019              :    %H   type difference (from).
    5020              :    %I   type difference (to).
    5021              :    %L   language as used in extern "lang".
    5022              :    %O   binary operator.
    5023              :    %P   function parameter whose position is indicated by an integer.
    5024              :    %Q   assignment operator.
    5025              :    %S   substitution (template + args)
    5026              :    %T   type.
    5027              :    %V   cv-qualifier.
    5028              :    %X   exception-specification.  */
    5029              : static bool
    5030       228504 : cp_printer (pretty_printer *pp, text_info *text, const char *spec,
    5031              :             int precision, bool wide, bool set_locus, bool verbose,
    5032              :             bool *quoted, pp_token_list &formatted_token_list)
    5033              : {
    5034       228504 :   gcc_assert (pp_format_postprocessor (pp));
    5035       228504 :   cxx_format_postprocessor *postprocessor
    5036       228504 :     = static_cast <cxx_format_postprocessor *> (pp_format_postprocessor (pp));
    5037              : 
    5038       228504 :   const char *result;
    5039       228504 :   tree t = NULL;
    5040              : #define next_tree    (t = va_arg (*text->m_args_ptr, tree))
    5041              : #define next_tcode   ((enum tree_code) va_arg (*text->m_args_ptr, int))
    5042              : #define next_lang    ((enum languages) va_arg (*text->m_args_ptr, int))
    5043              : #define next_int     va_arg (*text->m_args_ptr, int)
    5044              : 
    5045       228504 :   if (precision != 0 || wide)
    5046              :     return false;
    5047              : 
    5048       228504 :   switch (*spec)
    5049              :     {
    5050         4010 :     case 'A': result = args_to_string (next_tree, verbose);     break;
    5051            0 :     case 'C': result = code_to_string (next_tcode);             break;
    5052       103619 :     case 'D':
    5053       103619 :       {
    5054       103619 :         tree temp = next_tree;
    5055       103619 :         if (VAR_P (temp)
    5056       103619 :             && DECL_HAS_DEBUG_EXPR_P (temp))
    5057              :           {
    5058           18 :             temp = DECL_DEBUG_EXPR (temp);
    5059           18 :             if (!DECL_P (temp))
    5060              :               {
    5061           18 :                 result = expr_to_string (temp);
    5062           18 :                 break;
    5063              :               }
    5064              :           }
    5065       103601 :         result = decl_to_string (temp, verbose, pp_show_color (pp));
    5066              :       }
    5067       103601 :       break;
    5068        52218 :     case 'E': result = expr_to_string (next_tree);              break;
    5069          372 :     case 'F': result = fndecl_to_string (next_tree, verbose);   break;
    5070        10601 :     case 'H':
    5071        10601 :       defer_phase_2_of_type_diff (&postprocessor->m_type_a, next_tree,
    5072              :                                   formatted_token_list, verbose, *quoted);
    5073        10601 :       return true;
    5074        10601 :     case 'I':
    5075        10601 :       defer_phase_2_of_type_diff (&postprocessor->m_type_b, next_tree,
    5076              :                                   formatted_token_list, verbose, *quoted);
    5077        10601 :       return true;
    5078           24 :     case 'L': result = language_to_string (next_lang);          break;
    5079          308 :     case 'O': result = op_to_string (false, next_tcode);        break;
    5080         1563 :     case 'P': result = parm_to_string (next_int);               break;
    5081           24 :     case 'Q': result = op_to_string (true, next_tcode);         break;
    5082         1643 :     case 'S': result = subst_to_string (next_tree, pp_show_color (pp)); break;
    5083        42811 :     case 'T':
    5084        42811 :       {
    5085        85622 :         result = type_to_string (next_tree, verbose, false, quoted,
    5086        42811 :                                  pp_show_color (pp));
    5087              :       }
    5088        42811 :       break;
    5089          643 :     case 'V': result = cv_to_string (next_tree, verbose);       break;
    5090           67 :     case 'X': result = eh_spec_to_string (next_tree, verbose);  break;
    5091              : 
    5092              :     default:
    5093              :       return false;
    5094              :     }
    5095              : 
    5096       207302 :   pp_string (pp, result);
    5097       207302 :   if (set_locus && t != NULL)
    5098         1991 :     text->set_location (0, location_of (t), SHOW_RANGE_WITH_CARET);
    5099              :   return true;
    5100              : #undef next_tree
    5101              : #undef next_tcode
    5102              : #undef next_lang
    5103              : #undef next_int
    5104              : }
    5105              : 
    5106              : /* Warn about the use of C++0x features when appropriate.  */
    5107              : void
    5108     90338802 : maybe_warn_cpp0x (cpp0x_warn_str str, location_t loc/*=input_location*/)
    5109              : {
    5110     90338802 :   if (cxx_dialect == cxx98)
    5111         4381 :     switch (str)
    5112              :       {
    5113          186 :       case CPP0X_INITIALIZER_LISTS:
    5114          186 :         pedwarn (loc, OPT_Wc__11_extensions,
    5115              :                  "extended initializer lists "
    5116              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5117          186 :         break;
    5118            0 :       case CPP0X_EXPLICIT_CONVERSION:
    5119            0 :         pedwarn (loc, OPT_Wc__11_extensions,
    5120              :                  "explicit conversion operators "
    5121              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5122            0 :         break;
    5123         1390 :       case CPP0X_VARIADIC_TEMPLATES:
    5124         1390 :         pedwarn (loc, OPT_Wc__11_extensions,
    5125              :                  "variadic templates "
    5126              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5127         1390 :         break;
    5128            6 :       case CPP0X_LAMBDA_EXPR:
    5129            6 :         pedwarn (loc, OPT_Wc__11_extensions,
    5130              :                  "lambda expressions "
    5131              :                   "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5132            6 :         break;
    5133            0 :       case CPP0X_AUTO:
    5134            0 :         pedwarn (loc, OPT_Wc__11_extensions,
    5135              :                  "C++11 auto only available with %<-std=c++11%> or "
    5136              :                  "%<-std=gnu++11%>");
    5137            0 :         break;
    5138           16 :       case CPP0X_SCOPED_ENUMS:
    5139           16 :         pedwarn (loc, OPT_Wc__11_extensions,
    5140              :                  "scoped enums only available with %<-std=c++11%> or "
    5141              :                  "%<-std=gnu++11%>");
    5142           16 :         break;
    5143          545 :       case CPP0X_DEFAULTED_DELETED:
    5144          545 :         pedwarn (loc, OPT_Wc__11_extensions,
    5145              :                  "defaulted and deleted functions "
    5146              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5147          545 :         break;
    5148         1945 :       case CPP0X_INLINE_NAMESPACES:
    5149         1945 :         if (pedantic)
    5150          581 :           pedwarn (loc, OPT_Wc__11_extensions,
    5151              :                    "inline namespaces "
    5152              :                    "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5153              :         break;
    5154            3 :       case CPP0X_OVERRIDE_CONTROLS:
    5155            3 :         pedwarn (loc, OPT_Wc__11_extensions,
    5156              :                  "override controls (override/final) "
    5157              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5158            3 :         break;
    5159          132 :       case CPP0X_NSDMI:
    5160          132 :         pedwarn (loc, OPT_Wc__11_extensions,
    5161              :                  "non-static data member initializers "
    5162              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5163          132 :         break;
    5164            4 :       case CPP0X_USER_DEFINED_LITERALS:
    5165            4 :         pedwarn (loc, OPT_Wc__11_extensions,
    5166              :                  "user-defined literals "
    5167              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5168            4 :         break;
    5169            3 :       case CPP0X_DELEGATING_CTORS:
    5170            3 :         pedwarn (loc, OPT_Wc__11_extensions,
    5171              :                  "delegating constructors "
    5172              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5173            3 :         break;
    5174            3 :       case CPP0X_INHERITING_CTORS:
    5175            3 :         pedwarn (loc, OPT_Wc__11_extensions,
    5176              :                  "inheriting constructors "
    5177              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5178            3 :         break;
    5179          148 :       case CPP0X_ATTRIBUTES:
    5180          148 :         if (pedantic)
    5181           24 :           pedwarn (loc, OPT_Wc__11_extensions,
    5182              :                    "C++11 attributes "
    5183              :                    "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5184              :         break;
    5185            0 :       case CPP0X_REF_QUALIFIER:
    5186            0 :         pedwarn (loc, OPT_Wc__11_extensions,
    5187              :                  "ref-qualifiers "
    5188              :                  "only available with %<-std=c++11%> or %<-std=gnu++11%>");
    5189            0 :         break;
    5190            0 :       default:
    5191            0 :         gcc_unreachable ();
    5192              :       }
    5193     90338802 : }
    5194              : 
    5195              : /* Warn about the use of variadic templates when appropriate.  */
    5196              : void
    5197     14966702 : maybe_warn_variadic_templates (void)
    5198              : {
    5199     14966702 :   maybe_warn_cpp0x (CPP0X_VARIADIC_TEMPLATES);
    5200     14966702 : }
    5201              : 
    5202              : 
    5203              : /* Issue an ISO C++98 pedantic warning at LOCATION, conditional on
    5204              :    option OPTION_ID with text GMSGID.  Use this function to report
    5205              :    diagnostics for constructs that are invalid C++98, but valid
    5206              :    C++0x.  */
    5207              : bool
    5208      3876996 : pedwarn_cxx98 (location_t location,
    5209              :                diagnostics::option_id option_id,
    5210              :                const char *gmsgid, ...)
    5211              : {
    5212      3876996 :   diagnostics::diagnostic_info diagnostic;
    5213      3876996 :   va_list ap;
    5214      3876996 :   bool ret;
    5215      3876996 :   rich_location richloc (line_table, location);
    5216              : 
    5217      3876996 :   va_start (ap, gmsgid);
    5218      3876996 :   diagnostic_set_info (&diagnostic, gmsgid, &ap, &richloc,
    5219      3876996 :                        (cxx_dialect == cxx98
    5220              :                         ? diagnostics::kind::pedwarn
    5221              :                         : diagnostics::kind::warning));
    5222      3876996 :   diagnostic.m_option_id = option_id;
    5223      3876996 :   ret = diagnostic_report_diagnostic (global_dc, &diagnostic);
    5224      3876996 :   va_end (ap);
    5225      7753992 :   return ret;
    5226      3876996 : }
    5227              : 
    5228              : /* Issue a diagnostic that NAME cannot be found in SCOPE.  DECL is what
    5229              :    we found when we tried to do the lookup.  LOCATION is the location of
    5230              :    the NAME identifier.  */
    5231              : 
    5232              : void
    5233          581 : qualified_name_lookup_error (tree scope, tree name,
    5234              :                              tree decl, location_t location)
    5235              : {
    5236          581 :   if (scope == error_mark_node)
    5237              :     ; /* We already complained.  */
    5238          465 :   else if (TYPE_P (scope))
    5239              :     {
    5240          269 :       if (!COMPLETE_TYPE_P (scope)
    5241          269 :           && !currently_open_class (scope))
    5242           44 :         error_at (location, "incomplete type %qT used in nested name specifier",
    5243              :                   scope);
    5244          225 :       else if (TREE_CODE (decl) == TREE_LIST)
    5245              :         {
    5246            0 :           auto_diagnostic_group d;
    5247            0 :           error_at (location, "reference to %<%T::%D%> is ambiguous",
    5248              :                     scope, name);
    5249            0 :           print_candidates (location, decl);
    5250            0 :         }
    5251              :       else
    5252              :         {
    5253          225 :           auto_diagnostic_group d;
    5254          225 :           name_hint hint;
    5255          225 :           if (SCOPED_ENUM_P (scope) && TREE_CODE (name) == IDENTIFIER_NODE)
    5256           15 :             hint = suggest_alternative_in_scoped_enum (name, scope);
    5257          225 :           if (const char *suggestion = hint.suggestion ())
    5258              :             {
    5259            9 :               gcc_rich_location richloc (location);
    5260            9 :               richloc.add_fixit_replace (suggestion);
    5261            9 :               error_at (&richloc,
    5262              :                         "%qD is not a member of %qT; did you mean %qs?",
    5263              :                         name, scope, suggestion);
    5264            9 :             }
    5265              :           else
    5266          216 :             error_at (location, "%qD is not a member of %qT", name, scope);
    5267          225 :         }
    5268              :     }
    5269          196 :   else if (scope != global_namespace)
    5270              :     {
    5271          178 :       auto_diagnostic_group d;
    5272          178 :       bool emit_fixit = true;
    5273          178 :       name_hint hint
    5274          178 :         = suggest_alternative_in_explicit_scope (location, name, scope);
    5275          178 :       if (!hint)
    5276              :         {
    5277           61 :           hint = suggest_alternatives_in_other_namespaces (location, name);
    5278              :           /* "location" is just the location of the name, not of the explicit
    5279              :              scope, and it's not easy to get at the latter, so we can't issue
    5280              :              fix-it hints for the suggestion.  */
    5281           61 :           emit_fixit = false;
    5282              :         }
    5283          178 :       if (const char *suggestion = hint.suggestion ())
    5284              :         {
    5285           54 :           gcc_rich_location richloc (location);
    5286           54 :           if (emit_fixit)
    5287           33 :             richloc.add_fixit_replace (suggestion);
    5288           54 :           error_at (&richloc, "%qD is not a member of %qD; did you mean %qs?",
    5289              :                     name, scope, suggestion);
    5290           54 :         }
    5291              :       else
    5292          124 :         error_at (location, "%qD is not a member of %qD", name, scope);
    5293          178 :     }
    5294              :   else
    5295              :     {
    5296           18 :       auto_diagnostic_group d;
    5297           18 :       name_hint hint = suggest_alternatives_for (location, name, true);
    5298           18 :       if (const char *suggestion = hint.suggestion ())
    5299              :         {
    5300            9 :           gcc_rich_location richloc (location);
    5301            9 :           richloc.add_fixit_replace (suggestion);
    5302            9 :           error_at (&richloc,
    5303              :                     "%<::%D%> has not been declared; did you mean %qs?",
    5304              :                     name, suggestion);
    5305            9 :         }
    5306              :       else
    5307            9 :         error_at (location, "%<::%D%> has not been declared", name);
    5308           18 :     }
    5309          581 : }
    5310              : 
    5311              : /* C++-specific implementation of range_label::get_text () vfunc for
    5312              :    range_label_for_type_mismatch.
    5313              : 
    5314              :    Compare with print_template_differences above.  */
    5315              : 
    5316              : label_text
    5317          437 : range_label_for_type_mismatch::get_text (unsigned /*range_idx*/) const
    5318              : {
    5319          437 :   if (m_labelled_type == NULL_TREE)
    5320            0 :     return label_text::borrow (NULL);
    5321              : 
    5322          437 :   const bool verbose = false;
    5323          437 :   const bool show_color = false;
    5324              : 
    5325          437 :   const char *result;
    5326          437 :   if (m_other_type
    5327          437 :       && comparable_template_types_p (m_labelled_type, m_other_type))
    5328            2 :     result = type_to_string_with_compare (m_labelled_type, m_other_type,
    5329              :                                           verbose, show_color,
    5330              :                                           nullptr, nullptr);
    5331              :   else
    5332          435 :     result = type_to_string (m_labelled_type, verbose, true, NULL, show_color);
    5333              : 
    5334              :   /* Both of the above return GC-allocated buffers, so the caller mustn't
    5335              :      free them.  */
    5336          437 :   return label_text::borrow (result);
    5337              : }
        

Generated by: LCOV version 2.4-beta

LCOV profile is generated on x86_64 machine using following configure options: configure --disable-bootstrap --enable-coverage=opt --enable-languages=c,c++,fortran,go,jit,lto,rust,m2 --enable-host-shared. GCC test suite is run with the built compiler.