x86: Fix __wcsncmp_evex in strcmp-evex.S [BZ# 28755]
authorNoah Goldstein <goldstein.w.n@gmail.com>
Sun, 9 Jan 2022 22:02:28 +0000 (16:02 -0600)
committerNoah Goldstein <goldstein.w.n@gmail.com>
Tue, 11 Jan 2022 02:31:57 +0000 (20:31 -0600)
commit7e08db3359c86c94918feb33a1182cd0ff3bb10b
tree7d1a485b593000c3dd6c95859cdab41aa3459e25
parentddf0992cf57a93200e0c782e2a94d0733a5a0b87
x86: Fix __wcsncmp_evex in strcmp-evex.S [BZ# 28755]

Fixes [BZ# 28755] for wcsncmp by redirecting length >= 2^56 to
__wcscmp_evex. For x86_64 this covers the entire address range so any
length larger could not possibly be used to bound `s1` or `s2`.

test-strcmp, test-strncmp, test-wcscmp, and test-wcsncmp all pass.

Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
sysdeps/x86_64/multiarch/strcmp-evex.S