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| author | Richard Biener <rguenther@suse.de> | 2023-03-17 13:14:49 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2023-04-27 14:59:01 +0200 |
| commit | 65369ab62cee68eb7f6ef65e3d12d1969a9e20ee (patch) | |
| tree | f4d1ab60b57cefc0d225e852668740c07b27a2bf /gcc/builtins.cc | |
| parent | b5f04a4db59f61f416f23801902cbf4d0f50dc15 (diff) | |
| download | gcc-65369ab62cee68eb7f6ef65e3d12d1969a9e20ee.zip gcc-65369ab62cee68eb7f6ef65e3d12d1969a9e20ee.tar.gz gcc-65369ab62cee68eb7f6ef65e3d12d1969a9e20ee.tar.bz2 | |
tree-optimization/109170 - bogus use-after-free with __builtin_expect
The following generalizes the range-op for __builtin_expect
by using the fnspec machinery.
PR tree-optimization/109170
* gimple-range-op.cc (gimple_range_op_handler::maybe_builtin_call):
Handle __builtin_expect and similar via cfn_pass_through_arg1
and inspecting the calls fnspec.
* builtins.cc (builtin_fnspec): Handle BUILT_IN_EXPECT
and BUILT_IN_EXPECT_WITH_PROBABILITY.
Diffstat (limited to 'gcc/builtins.cc')
| -rw-r--r-- | gcc/builtins.cc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/builtins.cc b/gcc/builtins.cc index 878596c..bd07873 100644 --- a/gcc/builtins.cc +++ b/gcc/builtins.cc @@ -11718,6 +11718,8 @@ builtin_fnspec (tree callee) case BUILT_IN_RETURN_ADDRESS: return ".c"; case BUILT_IN_ASSUME_ALIGNED: + case BUILT_IN_EXPECT: + case BUILT_IN_EXPECT_WITH_PROBABILITY: return "1cX "; /* But posix_memalign stores a pointer into the memory pointed to by its first argument. */ |