James Almer: > 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?
Flushing. > > 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". _______________________________________________ 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".