1 ; analyzer.opt -- Options for the analyzer.
3 ; Copyright (C) 2019-2023 Free Software Foundation, Inc.
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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 -param=analyzer-text-art-string-ellipsis-threshold=
58 Common Joined UInteger Var(param_analyzer_text_art_string_ellipsis_threshold) Init(15) Param
59 The number of bytes at which to ellipsize string literals in analyzer text art diagrams.
61 -param=analyzer-text-art-string-ellipsis-head-len=
62 Common Joined UInteger Var(param_analyzer_text_art_string_ellipsis_head_len) Init(6) Param
63 The number of literal bytes to show at the head of a string literal in text art when ellipsizing it.
65 -param=analyzer-text-art-string-ellipsis-tail-len=
66 Common Joined UInteger Var(param_analyzer_text_art_string_ellipsis_tail_len) Init(6) Param
67 The number of literal bytes to show at the tail of a string literal in text art when ellipsizing it.
69 -param=analyzer-text-art-ideal-canvas-width=
70 Common Joined UInteger Var(param_analyzer_text_art_ideal_canvas_width) Init(72) Param
71 The ideal width in characters of text art diagrams generated by the analyzer.
73 Wanalyzer-allocation-size
74 Common Var(warn_analyzer_allocation_size) Init(1) Warning
75 Warn about code paths in which a pointer to a buffer is assigned to an incompatible type.
77 Wanalyzer-deref-before-check
78 Common Var(warn_analyzer_deref_before_check) Init(1) Warning
79 Warn about code paths in which a pointer is checked for NULL after it has already been dereferenced.
81 Wanalyzer-double-fclose
82 Common Var(warn_analyzer_double_fclose) Init(1) Warning
83 Warn about code paths in which a stdio FILE can be closed more than once.
86 Common Var(warn_analyzer_double_free) Init(1) Warning
87 Warn about code paths in which a pointer can be freed more than once.
89 Wanalyzer-exposure-through-output-file
90 Common Var(warn_analyzer_exposure_through_output_file) Init(1) Warning
91 Warn about code paths in which sensitive data is written to a file.
93 Wanalyzer-exposure-through-uninit-copy
94 Common Var(warn_analyzer_exposure_through_uninit_copy) Init(1) Warning
95 Warn about code paths in which sensitive data is copied across a security boundary.
97 Wanalyzer-fd-access-mode-mismatch
98 Common Var(warn_analyzer_fd_mode_mismatch) Init(1) Warning
99 Warn about code paths in which read on a write-only file descriptor is attempted, or vice versa.
101 Wanalyzer-fd-double-close
102 Common Var(warn_analyzer_fd_double_close) Init(1) Warning
103 Warn about code paths in which a file descriptor can be closed more than once.
106 Common Var(warn_analyzer_fd_leak) Init(1) Warning
107 Warn about code paths in which a file descriptor is not closed.
109 Wanalyzer-fd-phase-mismatch
110 Common Var(warn_analyzer_fd_phase_mismatch) Init(1) Warning
111 Warn about code paths in which an operation is attempted in the wrong phase of a file descriptor's lifetime.
113 Wanalyzer-fd-type-mismatch
114 Common Var(warn_analyzer_fd_type_mismatch) Init(1) Warning
115 Warn about code paths in which an operation is attempted on the wrong type of file descriptor.
117 Wanalyzer-fd-use-after-close
118 Common Var(warn_analyzer_fd_use_after_close) Init(1) Warning
119 Warn about code paths in which a read or write is performed on a closed file descriptor.
121 Wanalyzer-fd-use-without-check
122 Common Var(warn_analyzer_fd_use_without_check) Init(1) Warning
123 Warn about code paths in which a file descriptor is used without being checked for validity.
126 Common Var(warn_analyzer_file_leak) Init(1) Warning
127 Warn about code paths in which a stdio FILE is not closed.
129 Wanalyzer-free-of-non-heap
130 Common Var(warn_analyzer_free_of_non_heap) Init(1) Warning
131 Warn about code paths in which a non-heap pointer is freed.
133 Wanalyzer-imprecise-fp-arithmetic
134 Common Var(warn_analyzer_imprecise_fp_arithmetic) Init(1) Warning
135 Warn about code paths in which floating-point arithmetic is used in locations where precise computation is needed.
137 Wanalyzer-infinite-recursion
138 Common Var(warn_analyzer_infinite_recursion) Init(1) Warning
139 Warn about code paths which appear to lead to infinite recursion.
141 Wanalyzer-jump-through-null
142 Common Var(warn_analyzer_jump_through_null) Init(1) Warning
143 Warn about code paths in which a NULL function pointer is called.
145 Wanalyzer-malloc-leak
146 Common Var(warn_analyzer_malloc_leak) Init(1) Warning
147 Warn about code paths in which a heap-allocated pointer leaks.
149 Wanalyzer-mismatching-deallocation
150 Common Var(warn_analyzer_mismatching_deallocation) Init(1) Warning
151 Warn about code paths in which the wrong deallocation function is called.
153 Wanalyzer-out-of-bounds
154 Common Var(warn_analyzer_out_of_bounds) Init(1) Warning
155 Warn about code paths in which a write or read to a buffer is out-of-bounds.
157 Wanalyzer-overlapping-buffers
158 Common Var(warn_analyzer_overlapping_buffers) Init(1) Warning
159 Warn about code paths in which undefined behavior would occur due to overlapping buffers.
161 Wanalyzer-possible-null-argument
162 Common Var(warn_analyzer_possible_null_argument) Init(1) Warning
163 Warn about code paths in which a possibly-NULL value is passed to a must-not-be-NULL function argument.
165 Wanalyzer-possible-null-dereference
166 Common Var(warn_analyzer_possible_null_dereference) Init(1) Warning
167 Warn about code paths in which a possibly-NULL pointer is dereferenced.
169 Wanalyzer-unsafe-call-within-signal-handler
170 Common Var(warn_analyzer_unsafe_call_within_signal_handler) Init(1) Warning
171 Warn about code paths in which an async-signal-unsafe function is called from a signal handler.
173 Wanalyzer-null-argument
174 Common Var(warn_analyzer_null_argument) Init(1) Warning
175 Warn about code paths in which NULL is passed to a must-not-be-NULL function argument.
177 Wanalyzer-null-dereference
178 Common Var(warn_analyzer_null_dereference) Init(1) Warning
179 Warn about code paths in which a NULL pointer is dereferenced.
181 Wanalyzer-putenv-of-auto-var
182 Common Var(warn_analyzer_putenv_of_auto_var) Init(1) Warning
183 Warn about code paths in which an on-stack buffer is passed to putenv.
185 Wanalyzer-shift-count-negative
186 Common Var(warn_analyzer_shift_count_negative) Init(1) Warning
187 Warn about code paths in which a shift with negative count is attempted.
189 Wanalyzer-shift-count-overflow
190 Common Var(warn_analyzer_shift_count_overflow) Init(1) Warning
191 Warn about code paths in which a shift with count >= width of type is attempted.
193 Wanalyzer-stale-setjmp-buffer
194 Common Var(warn_analyzer_stale_setjmp_buffer) Init(1) Warning
195 Warn about code paths in which a longjmp rewinds to a jmp_buf saved in a stack frame that has returned.
197 Wanalyzer-tainted-allocation-size
198 Common Var(warn_analyzer_tainted_allocation_size) Init(1) Warning
199 Warn about code paths in which an unsanitized value is used as an allocation size.
201 Wanalyzer-tainted-array-index
202 Common Var(warn_analyzer_tainted_array_index) Init(1) Warning
203 Warn about code paths in which an unsanitized value is used as an array index.
205 Wanalyzer-tainted-assertion
206 Common Var(warn_analyzer_tainted_assertion) Init(1) Warning
207 Warn about code paths in which an 'assert()' is made involving an unsanitized value.
209 Wanalyzer-tainted-divisor
210 Common Var(warn_analyzer_tainted_divisor) Init(1) Warning
211 Warn about code paths in which an unsanitized value is used as a divisor.
213 Wanalyzer-tainted-offset
214 Common Var(warn_analyzer_tainted_offset) Init(1) Warning
215 Warn about code paths in which an unsanitized value is used as a pointer offset.
217 Wanalyzer-tainted-size
218 Common Var(warn_analyzer_tainted_size) Init(1) Warning
219 Warn about code paths in which an unsanitized value is used as a size.
221 Wanalyzer-use-after-free
222 Common Var(warn_analyzer_use_after_free) Init(1) Warning
223 Warn about code paths in which a freed value is used.
225 Wanalyzer-use-of-pointer-in-stale-stack-frame
226 Common Var(warn_analyzer_use_of_pointer_in_stale_stack_frame) Init(1) Warning
227 Warn about code paths in which a pointer to a stale stack frame is used.
229 Wanalyzer-va-arg-type-mismatch
230 Common Var(warn_analyzer_va_arg_type_mismatch) Init(1) Warning
231 Warn about code paths in which va_arg uses the wrong type.
233 Wanalyzer-va-list-exhausted
234 Common Var(warn_analyzer_va_list_exhausted) Init(1) Warning
235 Warn about code paths in which va_arg is used too many times on a va_list.
237 Wanalyzer-va-list-leak
238 Common Var(warn_analyzer_va_list_leak) Init(1) Warning
239 Warn about code paths in which va_start or va_copy is used without a corresponding va_end.
241 Wanalyzer-va-list-use-after-va-end
242 Common Var(warn_analyzer_va_list_use_after_va_end) Init(1) Warning
243 Warn about code paths in which a va_list is used after va_end.
245 Wanalyzer-write-to-const
246 Common Var(warn_analyzer_write_to_const) Init(1) Warning
247 Warn about code paths which attempt to write to a const object.
249 Wanalyzer-write-to-string-literal
250 Common Var(warn_analyzer_write_to_string_literal) Init(1) Warning
251 Warn about code paths which attempt to write to a string literal.
253 Wanalyzer-use-of-uninitialized-value
254 Common Var(warn_analyzer_use_of_uninitialized_value) Init(1) Warning
255 Warn about code paths in which an uninitialized value is used.
257 Wanalyzer-too-complex
258 Common Var(warn_analyzer_too_complex) Init(0) Warning
259 Warn if the code is too complicated for the analyzer to fully explore.
262 Common Joined RejectNegative Var(flag_analyzer_checker)
263 Restrict the analyzer to run just the named checker.
265 fanalyzer-debug-text-art
266 Common Var(flag_analyzer_debug_text_art) Init(0)
267 Add extra annotations to diagrams.
269 fanalyzer-fine-grained
270 Common Var(flag_analyzer_fine_grained) Init(0)
271 Avoid combining multiple statements into one exploded edge.
273 fanalyzer-feasibility
274 Common Var(flag_analyzer_feasibility) Init(1)
275 Verify that paths are feasible when emitting diagnostics.
277 fanalyzer-show-duplicate-count
278 Common Var(flag_analyzer_show_duplicate_count) Init(0)
279 Issue a note when diagnostics are deduplicated.
281 fanalyzer-state-purge
282 Common Var(flag_analyzer_state_purge) Init(1)
283 Purge unneeded state during analysis.
285 fanalyzer-state-merge
286 Common Var(flag_analyzer_state_merge) Init(1)
287 Merge similar-enough states during analysis.
289 fanalyzer-suppress-followups
290 Common Var(flag_analyzer_suppress_followups) Init(1)
291 Stop exploring an execution path after certain diagnostics.
293 fanalyzer-transitivity
294 Common Var(flag_analyzer_transitivity) Init(0)
295 Enable transitivity of constraints during analysis.
297 fanalyzer-show-events-in-system-headers
298 Common Var(flag_analyzer_show_events_in_system_headers) Init(0)
299 Show events within system headers in analyzer execution paths.
301 fanalyzer-call-summaries
302 Common Var(flag_analyzer_call_summaries) Init(0)
303 Approximate the effect of function calls to simplify analysis.
305 fanalyzer-undo-inlining
306 Common Var(flag_analyzer_undo_inlining) Init(1)
307 Try to reconstruct function calls and returns after inlining.
309 fanalyzer-verbose-edges
310 Common Var(flag_analyzer_verbose_edges) Init(0)
311 Emit more verbose descriptions of control flow in diagnostics.
313 fanalyzer-verbose-state-changes
314 Common Var(flag_analyzer_verbose_state_changes) Init(0)
315 Emit more verbose descriptions of state changes in diagnostics.
318 Common Joined UInteger Var(analyzer_verbosity) Init(2)
319 Control which events are displayed in diagnostic paths.
322 Common RejectNegative Var(flag_dump_analyzer)
323 Dump various analyzer internals to SRCFILE.analyzer.txt.
325 fdump-analyzer-stderr
326 Common RejectNegative Var(flag_dump_analyzer_stderr)
327 Dump various analyzer internals to stderr.
329 fdump-analyzer-callgraph
330 Common RejectNegative Var(flag_dump_analyzer_callgraph)
331 Dump analyzer-specific call graph information to a SRCFILE.callgraph.dot file.
333 fdump-analyzer-exploded-graph
334 Common RejectNegative Var(flag_dump_analyzer_exploded_graph)
335 Dump the analyzer exploded graph to a SRCFILE.eg.dot file.
337 fdump-analyzer-exploded-nodes
338 Common RejectNegative Var(flag_dump_analyzer_exploded_nodes)
339 Emit diagnostics showing the location of nodes in the exploded graph.
341 fdump-analyzer-exploded-nodes-2
342 Common RejectNegative Var(flag_dump_analyzer_exploded_nodes_2)
343 Dump a textual representation of the exploded graph to SRCFILE.eg.txt.
345 fdump-analyzer-exploded-nodes-3
346 Common RejectNegative Var(flag_dump_analyzer_exploded_nodes_3)
347 Dump a textual representation of the exploded graph to SRCFILE.eg-ID.txt.
349 fdump-analyzer-exploded-paths
350 Common RejectNegative Var(flag_dump_analyzer_exploded_paths)
351 Dump a textual representation of each diagnostic's exploded path to SRCFILE.IDX.KIND.epath.txt.
353 fdump-analyzer-feasibility
354 Common RejectNegative Var(flag_dump_analyzer_feasibility)
355 Dump various analyzer internals to SRCFILE.*.fg.dot and SRCFILE.*.tg.dot.
358 Common RejectNegative Var(flag_dump_analyzer_json)
359 Dump analyzer-specific data to a SRCFILE.analyzer.json.gz file.
361 fdump-analyzer-state-purge
362 Common RejectNegative Var(flag_dump_analyzer_state_purge)
363 Dump state-purging information to a SRCFILE.state-purge.dot file.
365 fdump-analyzer-supergraph
366 Common RejectNegative Var(flag_dump_analyzer_supergraph)
367 Dump the analyzer supergraph to a SRCFILE.supergraph.dot file.
369 fdump-analyzer-untracked
370 Common RejectNegative Var(flag_dump_analyzer_untracked)
371 Emit custom warnings with internal details intended for analyzer developers.
373 ; This comment is to ensure we retain the blank line above.