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authorNoah Goldstein <goldstein.w.n@gmail.com>2022-02-15 08:18:15 -0600
committerNoah Goldstein <goldstein.w.n@gmail.com>2022-02-17 15:43:05 -0600
commitc6272098323153db373f2986c67786ea8c85f1cf (patch)
treef0285e4cd04dfd97b6faaf4601034b7d37560bef /debug/gets_chk.c
parentaa5a720056d37cf24924c138a3dbe6dace98e97c (diff)
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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>
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