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buffer: fix av_buffer_realloc() when the data is offset wrt buffer start

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In such a case behave as if the buffer was not reallocatable -- allocate a
new one and copy the data (preserving just the part described by the
reference passed to av_buffer_realloc).

CC: libav-stable@libav.org
Reported-By: wm4 <nfxjfg@googlemail.com>
This commit is contained in:
Anton Khirnov 2016-08-02 21:16:44 +02:00
parent e99ecda550
commit 24a362569b
1 changed files with 1 additions and 1 deletions
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2
libavutil/buffer.c
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@ -170,7 +170,7 @@ int av_buffer_realloc(AVBufferRef **pbuf, int size)
return 0; return 0;
if (!(buf->buffer->flags & BUFFER_FLAG_REALLOCATABLE) || if (!(buf->buffer->flags & BUFFER_FLAG_REALLOCATABLE) ||
!av_buffer_is_writable(buf)) { !av_buffer_is_writable(buf) || buf->data != buf->buffer->data) {
/* cannot realloc, allocate a new reallocable buffer and copy data */ /* cannot realloc, allocate a new reallocable buffer and copy data */
AVBufferRef *new = NULL; AVBufferRef *new = NULL;