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| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-02-15 08:18:15 -0600 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2022-02-18 18:07:56 -0800 |
| commit | e6251366b64960c271b39ec8d2afcc79e965e291 (patch) | |
| tree | 6137251d946fb000b8a8c6b4f8263b74ef94947d /sysdeps/x86_64/multiarch/wcsncmp-avx2.S | |
| parent | 0f8a2390000c4e9a152b5f6cf8220f2560c01e74 (diff) | |
| download | glibc-e6251366b64960c271b39ec8d2afcc79e965e291.tar.gz glibc-e6251366b64960c271b39ec8d2afcc79e965e291.tar.xz glibc-e6251366b64960c271b39ec8d2afcc79e965e291.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> (cherry picked from commit c6272098323153db373f2986c67786ea8c85f1cf)
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" |