1 ; analyzer.opt -- Options for the analyzer.
3 ; Copyright (C) 2019-2022 Free Software Foundation, Inc.
5 ; This file is part of GCC.
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21 ; See the GCC internals manual for a description of this file's format.
23 ; Please try to keep this file in ASCII collating order.
25 -param=analyzer-bb-explosion-factor=
26 Common Joined UInteger Var(param_analyzer_bb_explosion_factor) Init(5) Param
27 The maximum number of 'after supernode' exploded nodes within the analyzer per supernode, before terminating analysis.
29 -param=analyzer-max-enodes-per-program-point=
30 Common Joined UInteger Var(param_analyzer_max_enodes_per_program_point) Init(8) Param
31 The maximum number of exploded nodes per program point within the analyzer, before terminating analysis of that point.
33 -param=analyzer-max-constraints=
34 Common Joined UInteger Var(param_analyzer_max_constraints) Init(20) Param
35 The maximum number of constraints per state.
37 -param=analyzer-max-infeasible-edges=
38 Common Joined UInteger Var(param_analyzer_max_infeasible_edges) Init(10) Param
39 The maximum number of infeasible edges to reject before declaring a diagnostic as infeasible.
41 -param=analyzer-max-recursion-depth=
42 Common Joined UInteger Var(param_analyzer_max_recursion_depth) Init(2) Param
43 The maximum number of times a callsite can appear in a call stack within the analyzer, before terminating analysis of a call that would recurse deeper.
45 -param=analyzer-max-svalue-depth=
46 Common Joined UInteger Var(param_analyzer_max_svalue_depth) Init(12) Param
47 The maximum depth of a symbolic value, before approximating the value as unknown.
49 -param=analyzer-min-snodes-for-call-summary=
50 Common Joined UInteger Var(param_analyzer_min_snodes_for_call_summary) Init(10) Param
51 The minimum number of supernodes within a function for the analyzer to consider summarizing its effects at call sites.
53 -param=analyzer-max-enodes-for-full-dump=
54 Common Joined UInteger Var(param_analyzer_max_enodes_for_full_dump) Init(200) Param
55 The maximum depth of exploded nodes that should appear in a dot dump before switching to a less verbose format.
57 Wanalyzer-allocation-size
58 Common Var(warn_analyzer_allocation_size) Init(1) Warning
59 Warn about code paths in which a pointer to a buffer is assigned to an incompatible type.
61 Wanalyzer-double-fclose
62 Common Var(warn_analyzer_double_fclose) Init(1) Warning
63 Warn about code paths in which a stdio FILE can be closed more than once.
66 Common Var(warn_analyzer_double_free) Init(1) Warning
67 Warn about code paths in which a pointer can be freed more than once.
69 Wanalyzer-exposure-through-output-file
70 Common Var(warn_analyzer_exposure_through_output_file) Init(1) Warning
71 Warn about code paths in which sensitive data is written to a file.
73 Wanalyzer-fd-access-mode-mismatch
74 Common Var(warn_analyzer_fd_mode_mismatch) Init(1) Warning
75 Warn about code paths in which read on a write-only file descriptor is attempted, or vice versa.
77 Wanalyzer-fd-double-close
78 Common Var(warn_analyzer_fd_double_close) Init(1) Warning
79 Warn about code paths in which a file descriptor can be closed more than once.
82 Common Var(warn_analyzer_fd_leak) Init(1) Warning
83 Warn about code paths in which a file descriptor is not closed.
85 Wanalyzer-fd-use-after-close
86 Common Var(warn_analyzer_fd_use_after_close) Init(1) Warning
87 Warn about code paths in which a read or write is performed on a closed file descriptor.
89 Wanalyzer-fd-use-without-check
90 Common Var(warn_analyzer_fd_use_without_check) Init(1) Warning
91 Warn about code paths in which a file descriptor is used without being checked for validity.
94 Common Var(warn_analyzer_file_leak) Init(1) Warning
95 Warn about code paths in which a stdio FILE is not closed.
97 Wanalyzer-free-of-non-heap
98 Common Var(warn_analyzer_free_of_non_heap) Init(1) Warning
99 Warn about code paths in which a non-heap pointer is freed.
101 Wanalyzer-malloc-leak
102 Common Var(warn_analyzer_malloc_leak) Init(1) Warning
103 Warn about code paths in which a heap-allocated pointer leaks.
105 Wanalyzer-mismatching-deallocation
106 Common Var(warn_analyzer_mismatching_deallocation) Init(1) Warning
107 Warn about code paths in which the wrong deallocation function is called.
109 Wanalyzer-possible-null-argument
110 Common Var(warn_analyzer_possible_null_argument) Init(1) Warning
111 Warn about code paths in which a possibly-NULL value is passed to a must-not-be-NULL function argument.
113 Wanalyzer-possible-null-dereference
114 Common Var(warn_analyzer_possible_null_dereference) Init(1) Warning
115 Warn about code paths in which a possibly-NULL pointer is dereferenced.
117 Wanalyzer-unsafe-call-within-signal-handler
118 Common Var(warn_analyzer_unsafe_call_within_signal_handler) Init(1) Warning
119 Warn about code paths in which an async-signal-unsafe function is called from a signal handler.
121 Wanalyzer-null-argument
122 Common Var(warn_analyzer_null_argument) Init(1) Warning
123 Warn about code paths in which NULL is passed to a must-not-be-NULL function argument.
125 Wanalyzer-null-dereference
126 Common Var(warn_analyzer_null_dereference) Init(1) Warning
127 Warn about code paths in which a NULL pointer is dereferenced.
129 Wanalyzer-shift-count-negative
130 Common Var(warn_analyzer_shift_count_negative) Init(1) Warning
131 Warn about code paths in which a shift with negative count is attempted.
133 Wanalyzer-shift-count-overflow
134 Common Var(warn_analyzer_shift_count_overflow) Init(1) Warning
135 Warn about code paths in which a shift with count >= width of type is attempted.
137 Wanalyzer-stale-setjmp-buffer
138 Common Var(warn_analyzer_stale_setjmp_buffer) Init(1) Warning
139 Warn about code paths in which a longjmp rewinds to a jmp_buf saved in a stack frame that has returned.
141 Wanalyzer-tainted-allocation-size
142 Common Var(warn_analyzer_tainted_allocation_size) Init(1) Warning
143 Warn about code paths in which an unsanitized value is used as an allocation size.
145 Wanalyzer-tainted-array-index
146 Common Var(warn_analyzer_tainted_array_index) Init(1) Warning
147 Warn about code paths in which an unsanitized value is used as an array index.
149 Wanalyzer-tainted-divisor
150 Common Var(warn_analyzer_tainted_divisor) Init(1) Warning
151 Warn about code paths in which an unsanitized value is used as a divisor.
153 Wanalyzer-tainted-offset
154 Common Var(warn_analyzer_tainted_offset) Init(1) Warning
155 Warn about code paths in which an unsanitized value is used as a pointer offset.
157 Wanalyzer-tainted-size
158 Common Var(warn_analyzer_tainted_size) Init(1) Warning
159 Warn about code paths in which an unsanitized value is used as a size.
161 Wanalyzer-use-after-free
162 Common Var(warn_analyzer_use_after_free) Init(1) Warning
163 Warn about code paths in which a freed value is used.
165 Wanalyzer-use-of-pointer-in-stale-stack-frame
166 Common Var(warn_analyzer_use_of_pointer_in_stale_stack_frame) Init(1) Warning
167 Warn about code paths in which a pointer to a stale stack frame is used.
169 Wanalyzer-va-arg-type-mismatch
170 Common Var(warn_analyzer_va_arg_type_mismatch) Init(1) Warning
171 Warn about code paths in which va_arg uses the wrong type.
173 Wanalyzer-va-list-exhausted
174 Common Var(warn_analyzer_va_list_exhausted) Init(1) Warning
175 Warn about code paths in which va_arg is used too many times on a va_list.
177 Wanalyzer-va-list-leak
178 Common Var(warn_analyzer_va_list_leak) Init(1) Warning
179 Warn about code paths in which va_start or va_copy is used without a corresponding va_end.
181 Wanalyzer-va-list-use-after-va-end
182 Common Var(warn_analyzer_va_list_use_after_va_end) Init(1) Warning
183 Warn about code paths in which a va_list is used after va_end.
185 Wanalyzer-write-to-const
186 Common Var(warn_analyzer_write_to_const) Init(1) Warning
187 Warn about code paths which attempt to write to a const object.
189 Wanalyzer-write-to-string-literal
190 Common Var(warn_analyzer_write_to_string_literal) Init(1) Warning
191 Warn about code paths which attempt to write to a string literal.
193 Wanalyzer-use-of-uninitialized-value
194 Common Var(warn_analyzer_use_of_uninitialized_value) Init(1) Warning
195 Warn about code paths in which an uninitialized value is used.
197 Wanalyzer-too-complex
198 Common Var(warn_analyzer_too_complex) Init(0) Warning
199 Warn if the code is too complicated for the analyzer to fully explore.
202 Common Joined RejectNegative Var(flag_analyzer_checker)
203 Restrict the analyzer to run just the named checker.
205 fanalyzer-fine-grained
206 Common Var(flag_analyzer_fine_grained) Init(0)
207 Avoid combining multiple statements into one exploded edge.
209 fanalyzer-feasibility
210 Common Var(flag_analyzer_feasibility) Init(1)
211 Verify that paths are feasible when emitting diagnostics.
213 fanalyzer-show-duplicate-count
214 Common Var(flag_analyzer_show_duplicate_count) Init(0)
215 Issue a note when diagnostics are deduplicated.
217 fanalyzer-state-purge
218 Common Var(flag_analyzer_state_purge) Init(1)
219 Purge unneeded state during analysis.
221 fanalyzer-state-merge
222 Common Var(flag_analyzer_state_merge) Init(1)
223 Merge similar-enough states during analysis.
225 fanalyzer-transitivity
226 Common Var(flag_analyzer_transitivity) Init(0)
227 Enable transitivity of constraints during analysis.
229 fanalyzer-call-summaries
230 Common Var(flag_analyzer_call_summaries) Init(0)
231 Approximate the effect of function calls to simplify analysis.
233 fanalyzer-undo-inlining
234 Common Var(flag_analyzer_undo_inlining) Init(1)
235 Try to reconstruct function calls and returns after inlining.
237 fanalyzer-verbose-edges
238 Common Var(flag_analyzer_verbose_edges) Init(0)
239 Emit more verbose descriptions of control flow in diagnostics.
241 fanalyzer-verbose-state-changes
242 Common Var(flag_analyzer_verbose_state_changes) Init(0)
243 Emit more verbose descriptions of state changes in diagnostics.
246 Common Joined UInteger Var(analyzer_verbosity) Init(2)
247 Control which events are displayed in diagnostic paths.
250 Common RejectNegative Var(flag_dump_analyzer)
251 Dump various analyzer internals to SRCFILE.analyzer.txt.
253 fdump-analyzer-stderr
254 Common RejectNegative Var(flag_dump_analyzer_stderr)
255 Dump various analyzer internals to stderr.
257 fdump-analyzer-callgraph
258 Common RejectNegative Var(flag_dump_analyzer_callgraph)
259 Dump analyzer-specific call graph information to a SRCFILE.callgraph.dot file.
261 fdump-analyzer-exploded-graph
262 Common RejectNegative Var(flag_dump_analyzer_exploded_graph)
263 Dump the analyzer exploded graph to a SRCFILE.eg.dot file.
265 fdump-analyzer-exploded-nodes
266 Common RejectNegative Var(flag_dump_analyzer_exploded_nodes)
267 Emit diagnostics showing the location of nodes in the exploded graph.
269 fdump-analyzer-exploded-nodes-2
270 Common RejectNegative Var(flag_dump_analyzer_exploded_nodes_2)
271 Dump a textual representation of the exploded graph to SRCFILE.eg.txt.
273 fdump-analyzer-exploded-nodes-3
274 Common RejectNegative Var(flag_dump_analyzer_exploded_nodes_3)
275 Dump a textual representation of the exploded graph to SRCFILE.eg-ID.txt.
277 fdump-analyzer-exploded-paths
278 Common RejectNegative Var(flag_dump_analyzer_exploded_paths)
279 Dump a textual representation of each diagnostic's exploded path to SRCFILE.IDX.KIND.epath.txt.
281 fdump-analyzer-feasibility
282 Common RejectNegative Var(flag_dump_analyzer_feasibility)
283 Dump various analyzer internals to SRCFILE.*.fg.dot and SRCFILE.*.tg.dot.
286 Common RejectNegative Var(flag_dump_analyzer_json)
287 Dump analyzer-specific data to a SRCFILE.analyzer.json.gz file.
289 fdump-analyzer-state-purge
290 Common RejectNegative Var(flag_dump_analyzer_state_purge)
291 Dump state-purging information to a SRCFILE.state-purge.dot file.
293 fdump-analyzer-supergraph
294 Common RejectNegative Var(flag_dump_analyzer_supergraph)
295 Dump the analyzer supergraph to a SRCFILE.supergraph.dot file.
297 fdump-analyzer-untracked
298 Common RejectNegative Var(flag_dump_analyzer_untracked)
299 Emit custom warnings with internal details intended for analyzer developers.
301 ; This comment is to ensure we retain the blank line above.