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1 : : /* Subclasses of custom_edge_info for describing outcomes of function calls.
2 : : Copyright (C) 2021-2024 Free Software Foundation, Inc.
3 : : Contributed by David Malcolm <dmalcolm@redhat.com>.
4 : :
5 : : This file is part of GCC.
6 : :
7 : : GCC is free software; you can redistribute it and/or modify it
8 : : under the terms of the GNU General Public License as published by
9 : : the Free Software Foundation; either version 3, or (at your option)
10 : : any later version.
11 : :
12 : : GCC is distributed in the hope that it will be useful, but
13 : : WITHOUT ANY WARRANTY; without even the implied warranty of
14 : : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 : : General Public License for more details.
16 : :
17 : : You should have received a copy of the GNU General Public License
18 : : along with GCC; see the file COPYING3. If not see
19 : : <http://www.gnu.org/licenses/>. */
20 : :
21 : : #include "config.h"
22 : : #define INCLUDE_VECTOR
23 : : #include "system.h"
24 : : #include "coretypes.h"
25 : : #include "tree.h"
26 : : #include "function.h"
27 : : #include "basic-block.h"
28 : : #include "gimple.h"
29 : : #include "gimple-iterator.h"
30 : : #include "diagnostic-core.h"
31 : : #include "options.h"
32 : : #include "cgraph.h"
33 : : #include "tree-pretty-print.h"
34 : : #include "bitmap.h"
35 : : #include "analyzer/analyzer.h"
36 : : #include "analyzer/analyzer-logging.h"
37 : : #include "ordered-hash-map.h"
38 : : #include "cfg.h"
39 : : #include "digraph.h"
40 : : #include "analyzer/supergraph.h"
41 : : #include "sbitmap.h"
42 : : #include "analyzer/call-string.h"
43 : : #include "analyzer/program-point.h"
44 : : #include "analyzer/store.h"
45 : : #include "analyzer/region-model.h"
46 : : #include "analyzer/constraint-manager.h"
47 : : #include "diagnostic-event-id.h"
48 : : #include "analyzer/sm.h"
49 : : #include "analyzer/pending-diagnostic.h"
50 : : #include "analyzer/region-model-reachability.h"
51 : : #include "analyzer/analyzer-selftests.h"
52 : : #include "analyzer/program-state.h"
53 : : #include "diagnostic-path.h"
54 : : #include "analyzer/checker-path.h"
55 : : #include "analyzer/diagnostic-manager.h"
56 : : #include "analyzer/exploded-graph.h"
57 : : #include "analyzer/call-details.h"
58 : : #include "analyzer/call-info.h"
59 : : #include "make-unique.h"
60 : :
61 : : #if ENABLE_ANALYZER
62 : :
63 : : namespace ana {
64 : :
65 : : /* class custom_edge_info. */
66 : :
67 : : bool
68 : 2894 : custom_edge_info::update_state (program_state *state,
69 : : const exploded_edge *eedge,
70 : : region_model_context *ctxt) const
71 : : {
72 : 2894 : return update_model (state->m_region_model, eedge, ctxt);
73 : : }
74 : :
75 : : /* class call_info : public custom_edge_info. */
76 : :
77 : : /* Implementation of custom_edge_info::print vfunc for call_info. */
78 : :
79 : : void
80 : 0 : call_info::print (pretty_printer *pp) const
81 : : {
82 : 0 : gcc_assert (pp);
83 : 0 : print_desc (*pp);
84 : 0 : }
85 : :
86 : : /* Implementation of custom_edge_info::add_events_to_path vfunc for
87 : : call_info: add a custom_event using call_info::get_desc as its
88 : : description. */
89 : :
90 : : void
91 : 292 : call_info::add_events_to_path (checker_path *emission_path,
92 : : const exploded_edge &eedge) const
93 : : {
94 : 0 : class call_event : public custom_event
95 : : {
96 : : public:
97 : 292 : call_event (const event_loc_info &loc_info,
98 : : const call_info *call_info)
99 : 292 : : custom_event (loc_info),
100 : 292 : m_call_info (call_info)
101 : : {}
102 : :
103 : 576 : void print_desc (pretty_printer &pp) const final override
104 : : {
105 : 576 : m_call_info->print_desc (pp);
106 : 576 : }
107 : :
108 : : private:
109 : : const call_info *m_call_info;
110 : : };
111 : :
112 : 292 : const exploded_node *src_node = eedge.m_src;
113 : 292 : const program_point &src_point = src_node->get_point ();
114 : 292 : tree caller_fndecl = src_point.get_fndecl ();
115 : 292 : const int stack_depth = src_point.get_stack_depth ();
116 : :
117 : 292 : emission_path->add_event
118 : 292 : (make_unique<call_event> (event_loc_info (get_call_stmt ()->location,
119 : : caller_fndecl,
120 : 292 : stack_depth),
121 : 292 : this));
122 : 292 : }
123 : :
124 : : /* Recreate a call_details instance from this call_info. */
125 : :
126 : : call_details
127 : 6967 : call_info::get_call_details (region_model *model,
128 : : region_model_context *ctxt) const
129 : : {
130 : 6967 : return call_details (m_call_stmt, model, ctxt);
131 : : }
132 : :
133 : : /* call_info's ctor.
134 : :
135 : : The call_info instance will outlive the call_details instance;
136 : : call_details instances are typically created on the stack. */
137 : :
138 : 4535 : call_info::call_info (const call_details &cd)
139 : 4535 : : m_call_stmt (cd.get_call_stmt ()),
140 : 4535 : m_fndecl (cd.get_fndecl_for_call ())
141 : : {
142 : 4535 : gcc_assert (m_fndecl);
143 : 4535 : }
144 : :
145 : 2361 : call_info::call_info (const call_details &cd,
146 : 2361 : const function &called_fn)
147 : 2361 : : m_call_stmt (cd.get_call_stmt ()),
148 : 2361 : m_fndecl (called_fn.decl)
149 : : {
150 : 2361 : gcc_assert (m_fndecl);
151 : 2361 : }
152 : :
153 : : /* class succeed_or_fail_call_info : public call_info. */
154 : :
155 : : void
156 : 276 : succeed_or_fail_call_info::print_desc (pretty_printer &pp) const
157 : : {
158 : 276 : if (m_success)
159 : 158 : pp_printf (&pp, "when %qE succeeds", get_fndecl ());
160 : : else
161 : 118 : pp_printf (&pp, "when %qE fails", get_fndecl ());
162 : 276 : }
163 : :
164 : : } // namespace ana
165 : :
166 : : #endif /* #if ENABLE_ANALYZER */
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