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avpacket: Fix error checking in packet_alloc

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Previously the wrong buffer pointer was checked, when buf
instead of *buf was checked. But checking the return value
instead is even better.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-09-11 23:09:37 +03:00
parent 6fc8226e29
commit 85e8192b85
1 changed files with 4 additions and 3 deletions
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7
libavcodec/avpacket.c
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@ -64,12 +64,13 @@ FF_ENABLE_DEPRECATION_WARNINGS
static int packet_alloc(AVBufferRef **buf, int size)
{
int ret;
if ((unsigned)size >= (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE)
return AVERROR(EINVAL);
av_buffer_realloc(buf, size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!buf)
return AVERROR(ENOMEM);
ret = av_buffer_realloc(buf, size + FF_INPUT_BUFFER_PADDING_SIZE);
if (ret < 0)
return ret;
memset((*buf)->data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);