On 2/14/2021 6:09 PM, Paul B Mahol wrote:
Fixes following report:
libavformat/utils.c:1429:14: runtime error: applying zero offset to null pointer
How is data NULL here? That's the input packet's data pointer, and this
loop is accessed only if size is > 0. data == NULL and size != 0 doesn't
sound valid. Or am i missing something?
Try compiling with assert level set to 1, see if you get an assertion
failure on avpacket helpers.
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
libavformat/utils.c:1429:14
Signed-off-by: Paul B Mahol <one...@gmail.com>
---
libavformat/utils.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 3e955b85bc..e4f100fda2 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1426,8 +1426,10 @@ static int parse_packet(AVFormatContext *s, AVPacket
*pkt,
pkt->pts = pkt->dts = AV_NOPTS_VALUE;
pkt->pos = -1;
/* increment read pointer */
- data += len;
- size -= len;
+ if (len > 0) {
+ data += len;
+ size -= len;
+ }
got_output = !!out_pkt.size;
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
