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Use alias-safe types in AV_COPY/SWAP/ZERO macros

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Originally committed as revision 21879 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-02-18 13:40:24 +00:00
parent 0c76e635f5
commit 7a6053ef72
1 changed files with 8 additions and 3 deletions
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11
libavutil/intreadwrite.h
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@ -428,7 +428,8 @@ union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
* afterwards.
*/
#define AV_COPY(n, d, s) (*(uint##n##_t*)(d) = *(const uint##n##_t*)(s))
#define AV_COPY(n, d, s) \
(((av_alias##n*)(d))->u##n = ((const av_alias##n*)(s))->u##n)
#ifndef AV_COPY32
# define AV_COPY32(d, s) AV_COPY(32, d, s)
@ -446,13 +447,17 @@ union unaligned_16 { uint16_t l; } __attribute__((packed)) av_alias;
} while(0)
#endif
#define AV_SWAP(n, a, b) FFSWAP(uint##n##_t, *(uint##n##_t*)(a), *(uint##n##_t*)(b))
#define AV_SWAP(n, a, b) FFSWAP(av_alias##n, *(av_alias##n*)(a), *(av_alias##n*)(b))
#ifndef AV_SWAP64
# define AV_SWAP64(a, b) AV_SWAP(64, a, b)
#endif
#define AV_ZERO(n, d) (*(uint##n##_t*)(d) = 0)
#define AV_ZERO(n, d) (((av_alias##n*)(d))->u##n = 0)
#ifndef AV_ZERO32
# define AV_ZERO32(d) AV_ZERO(32, d)
#endif
#ifndef AV_ZERO64
# define AV_ZERO64(d) AV_ZERO(64, d)