diff -ur glibc-2.16.0.orig/sysdeps/x86_64/multiarch/strcasestr-nonascii.c glibc-2.16.0/sysdeps/x86_64/multiarch/strcasestr-nonascii.c
--- glibc-2.16.0.orig/sysdeps/x86_64/multiarch/strcasestr-nonascii.c	2012-06-30 22:12:34.000000000 +0300
+++ glibc-2.16.0/sysdeps/x86_64/multiarch/strcasestr-nonascii.c	2012-08-13 02:44:14.713748902 +0300
@@ -39,7 +39,7 @@
     else
       u.b[i] = tolower (p[i]);
 
-  return u.x;
+  return _mm_loadu_si128(&u.x);
 }