From 24a362569bff1d4161742fffaca80a4a4428be8a Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Tue, 2 Aug 2016 21:16:44 +0200 Subject: [PATCH] buffer: fix av_buffer_realloc() when the data is offset wrt buffer start 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 --- libavutil/buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavutil/buffer.c b/libavutil/buffer.c index 6681002345..49a1f2d395 100644 --- a/libavutil/buffer.c +++ b/libavutil/buffer.c @@ -170,7 +170,7 @@ int av_buffer_realloc(AVBufferRef **pbuf, int size) return 0; 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 */ AVBufferRef *new = NULL;