From f411e3aede1f17599d02d1ab8d92a3c6d99e6676 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Sat, 21 Mar 2020 04:50:20 +0100 Subject: [PATCH] avformat/subtitles: Don't increment packet counter prematurely Do it only if the packet has been successfully allocated in av_new_packet() -- otherwise on error a completely uninitialized packet would be unreferenced later. Signed-off-by: Andreas Rheinhardt Signed-off-by: Michael Niedermayer (cherry picked from commit 6bd8bcc2ac4c64577d964552317989e61db794d8) Signed-off-by: Andreas Rheinhardt --- libavformat/subtitles.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavformat/subtitles.c b/libavformat/subtitles.c index 1230e34d08..bbc4e3e356 100644 --- a/libavformat/subtitles.c +++ b/libavformat/subtitles.c @@ -132,9 +132,10 @@ AVPacket *ff_subtitles_queue_insert(FFDemuxSubtitlesQueue *q, if (!subs) return NULL; q->subs = subs; - sub = &subs[q->nb_subs++]; + sub = &subs[q->nb_subs]; if (av_new_packet(sub, len) < 0) return NULL; + q->nb_subs++; sub->flags |= AV_PKT_FLAG_KEY; sub->pts = sub->dts = 0; memcpy(sub->data, event, len);