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| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-02-15 08:18:15 -0600 |
|---|---|---|
| committer | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-02-17 15:43:05 -0600 |
| commit | c6272098323153db373f2986c67786ea8c85f1cf (patch) | |
| tree | f0285e4cd04dfd97b6faaf4601034b7d37560bef /sysdeps/x86_64/multiarch/wcsncmp-avx2.S | |
| parent | aa5a720056d37cf24924c138a3dbe6dace98e97c (diff) | |
| download | glibc-c6272098323153db373f2986c67786ea8c85f1cf.tar.gz glibc-c6272098323153db373f2986c67786ea8c85f1cf.tar.xz glibc-c6272098323153db373f2986c67786ea8c85f1cf.zip | |
x86: Fallback {str|wcs}cmp RTM in the ncmp overflow case [BZ #28896]
In the overflow fallback strncmp-avx2-rtm and wcsncmp-avx2-rtm would call strcmp-avx2 and wcscmp-avx2 respectively. This would have not checks around vzeroupper and would trigger spurious aborts. This commit fixes that. test-strcmp, test-strncmp, test-wcscmp, and test-wcsncmp all pass on AVX2 machines with and without RTM. Co-authored-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'sysdeps/x86_64/multiarch/wcsncmp-avx2.S')
| -rw-r--r-- | sysdeps/x86_64/multiarch/wcsncmp-avx2.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/x86_64/multiarch/wcsncmp-avx2.S b/sysdeps/x86_64/multiarch/wcsncmp-avx2.S index 4fa1de4d3f..e9ede522b8 100644 --- a/sysdeps/x86_64/multiarch/wcsncmp-avx2.S +++ b/sysdeps/x86_64/multiarch/wcsncmp-avx2.S @@ -1,5 +1,5 @@ #define STRCMP __wcsncmp_avx2 #define USE_AS_STRNCMP 1 #define USE_AS_WCSCMP 1 - +#define OVERFLOW_STRCMP __wcscmp_avx2 #include "strcmp-avx2.S" |