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avutil/common: Fix undefined shift 

av_mod_uintp2_c uses a bitwise AND with (1 << p) - 1 to clear the high
bits of an unsigned int. But this is undefined if p == 31, because 1 is
an int and 2^31 is not representable in an int. So make 1 unsigned.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Andreas Rheinhardt 2019-09-18 05:26:07 +02:00 committed by Michael Niedermayer
parent e12a2a2d73
commit ebd25a5ba5
1 changed files with 1 additions and 1 deletions
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2
libavutil/common.h
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@ -240,7 +240,7 @@ static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)
*/
static av_always_inline av_const unsigned av_mod_uintp2_c(unsigned a, unsigned p)
{
return a & ((1 << p) - 1);
return a & ((1U << p) - 1);
}
/**