Taken from http://www.linuxfromscratch.org/lfs/view/development/chapter06/glibc.html --- sysdeps/i386/i686/multiarch/mempcpy_chk.S 2015-02-06 07:40:18.000000000 +0100 +++ sysdeps/i386/i686/multiarch/mempcpy_chk.S 2015-04-25 17:38:44.952119997 +0200 @@ -36,8 +36,8 @@ cmpl $0, KIND_OFFSET+__cpu_features@GOTOFF(%ebx) jne 1f call __init_cpu_features - leal __mempcpy_chk_ia32@GOTOFF(%ebx), %eax -1: testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) +1: leal __mempcpy_chk_ia32@GOTOFF(%ebx), %eax + testl $bit_SSE2, CPUID_OFFSET+index_SSE2+__cpu_features@GOTOFF(%ebx) jz 2f leal __mempcpy_chk_sse2_unaligned@GOTOFF(%ebx), %eax testl $bit_Fast_Unaligned_Load, FEATURE_OFFSET+index_Fast_Unaligned_Load+__cpu_features@GOTOFF(%ebx)