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Fix i686 memchr overflow calculation (BZ#21182)
https://sourceware.org/git/?p=glibc.git;a=commit;h=3abeeec5f46ff03
diff --git a/sysdeps/i386/i686/multiarch/memchr-sse2.S b/sysdeps/i386/i686/multiarch/memchr-sse2.S
index 910679c..e41f324 100644
--- a/sysdeps/i386/i686/multiarch/memchr-sse2.S
+++ b/sysdeps/i386/i686/multiarch/memchr-sse2.S
@@ -117,7 +117,6 @@ L(crosscache):
# ifndef USE_AS_RAWMEMCHR
jnz L(match_case2_prolog1)
- lea -16(%edx), %edx
/* Calculate the last acceptable address and check for possible
addition overflow by using satured math:
edx = ecx + edx
@@ -125,6 +124,7 @@ L(crosscache):
add %ecx, %edx
sbb %eax, %eax
or %eax, %edx
+ sub $16, %edx
jbe L(return_null)
lea 16(%edi), %edi
# else
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