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cpu detection: avoid a signed overflow 

1<<31 overflows because 1 is signed, so force it to unsigned.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Sean McGovern 2011-07-25 18:51:02 -04:00 committed by Ronald S. Bultje
parent 757b86cd9e
commit 5938e02185
1 changed files with 1 additions and 1 deletions
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2
libavutil/x86/cpu.c
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@ -113,7 +113,7 @@ int ff_get_cpu_flags_x86(void)
if(max_ext_level >= 0x80000001){
cpuid(0x80000001, eax, ebx, ecx, ext_caps);
if (ext_caps & (1<<31))
if (ext_caps & (1U<<31))
rval |= AV_CPU_FLAG_3DNOW;
if (ext_caps & (1<<30))
rval |= AV_CPU_FLAG_3DNOWEXT;