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| author | Martin Sebor <msebor@redhat.com> | 2022-01-15 16:37:54 -0700 |
|---|---|---|
| committer | Martin Sebor <msebor@redhat.com> | 2022-01-15 16:45:24 -0700 |
| commit | 671a283636de75f7ed638ee6b01ed2d44361b8b6 (patch) | |
| tree | fc2477d20340a1f678cb650cd8485127dddb1615 /libiberty | |
| parent | 29401b7b4581e9131e7057e263dcea8b40a6b5ab (diff) | |
Add -Wuse-after-free [PR80532].
gcc/c-family/ChangeLog
PR tree-optimization/80532
* c.opt (-Wuse-after-free): New options.
gcc/ChangeLog:
PR tree-optimization/80532
* common.opt (-Wuse-after-free): New options.
* diagnostic-spec.c (nowarn_spec_t::nowarn_spec_t): Handle
OPT_Wreturn_local_addr and OPT_Wuse_after_free_.
* diagnostic-spec.h (NW_DANGLING): New enumerator.
* doc/invoke.texi (-Wuse-after-free): Document new option.
* gimple-ssa-warn-access.cc (pass_waccess::check_call): Rename...
(pass_waccess::check_call_access): ...to this.
(pass_waccess::check): Rename...
(pass_waccess::check_block): ...to this.
(pass_waccess::check_pointer_uses): New function.
(pass_waccess::gimple_call_return_arg): New function.
(pass_waccess::warn_invalid_pointer): New function.
(pass_waccess::check_builtin): Handle free and realloc.
(gimple_use_after_inval_p): New function.
(get_realloc_lhs): New function.
(maybe_warn_mismatched_realloc): New function.
(pointers_related_p): New function.
(pass_waccess::check_call): Call check_pointer_uses.
(pass_waccess::execute): Compute and free dominance info.
libcpp/ChangeLog:
* files.c (_cpp_find_file): Substitute a valid pointer for
an invalid one to avoid -Wuse-after-free.
libiberty/ChangeLog:
* regex.c: Suppress -Wuse-after-free.
gcc/testsuite/ChangeLog:
PR tree-optimization/80532
* gcc.dg/Wmismatched-dealloc-2.c: Avoid -Wuse-after-free.
* gcc.dg/Wmismatched-dealloc-3.c: Same.
* gcc.dg/analyzer/file-1.c: Prune expected warning.
* gcc.dg/analyzer/file-2.c: Same.
* gcc.dg/attr-alloc_size-6.c: Disable -Wuse-after-free.
* gcc.dg/attr-alloc_size-7.c: Same.
* c-c++-common/Wuse-after-free-2.c: New test.
* c-c++-common/Wuse-after-free-3.c: New test.
* c-c++-common/Wuse-after-free-4.c: New test.
* c-c++-common/Wuse-after-free-5.c: New test.
* c-c++-common/Wuse-after-free-6.c: New test.
* c-c++-common/Wuse-after-free-7.c: New test.
* c-c++-common/Wuse-after-free.c: New test.
* g++.dg/warn/Wmismatched-dealloc-3.C: New test.
* g++.dg/warn/Wuse-after-free.C: New test.
Diffstat (limited to 'libiberty')
| -rw-r--r-- | libiberty/regex.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libiberty/regex.c b/libiberty/regex.c index cc5a4605ced..84af5276ae8 100644 --- a/libiberty/regex.c +++ b/libiberty/regex.c @@ -30,6 +30,10 @@ #pragma alloca #endif +#if __GNUC__ >= 12 +# pragma GCC diagnostic ignored "-Wuse-after-free" +#endif + #undef _GNU_SOURCE #define _GNU_SOURCE |