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authorMartin Storsjö <martin@martin.st>2012-04-08 17:38:45 +0300
committerMartin Storsjö <martin@martin.st>2012-04-10 11:56:42 +0300
commit14f063d294a18a31928d2167a66b1087910e14c8 (patch)
tree5682c191f420cefb276728be328e2f1a28cb60f9 /libavutil/tree.h
parente36b25d1df2ab30540c2d8939c5f2b0d6c059317 (diff)
downloadffmpeg-14f063d294a18a31928d2167a66b1087910e14c8.tar.gz
mem: Consistently return NULL for av_malloc(0)
Plain POSIX malloc(0) is allowed to return either NULL or a non-NULL pointer. The calling code should be ready to handle a NULL return as a correct return (instead of a failure) if the size to allocate was 0 - this makes sure the condition is handled in a consistent way across platforms. This also avoids calling posix_memalign(&ptr, 32, 0) on OS X, which returns an invalid pointer (a non-NULL pointer that causes crashes when passed to av_free). Abort in debug mode, to help track down issues related to incorrect handling of this case. Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavutil/tree.h')
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