From a42c47b77feda837a966aa96569ed8a2553b1c36 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Mon, 23 Sep 2019 23:23:10 +0200 Subject: [PATCH] avformat/webmdashenc: Don't pass NULL to memcmp Affects the FATE-tests webm-dash-manifest-unaligned-video-streams, webm-dash-manifest and webm-dash-manifest-representations. Signed-off-by: Andreas Rheinhardt --- libavformat/webmdashenc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavformat/webmdashenc.c b/libavformat/webmdashenc.c index 332d0466e1..1304c1a8c3 100644 --- a/libavformat/webmdashenc.c +++ b/libavformat/webmdashenc.c @@ -155,7 +155,8 @@ static int bitstream_switching(AVFormatContext *s, const AdaptationSet *as) !av_strstart(track_num->value, gold_track_num->value, NULL) || gold_par->codec_id != par->codec_id || gold_par->extradata_size != par->extradata_size || - memcmp(gold_par->extradata, par->extradata, par->extradata_size)) { + (par->extradata_size > 0 && + memcmp(gold_par->extradata, par->extradata, par->extradata_size))) { return 0; } }