[FFmpeg-cvslog] sbgdec: prevent NULL pointer access
Andreas Cadhalpun
git at videolan.org
Sun Nov 27 01:48:30 EET 2016
ffmpeg | branch: release/2.8 | Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com> | Thu Nov 10 22:21:20 2016 +0100| [22cd4aa22116a365d611091916a3eff74e21ec3f] | committer: Andreas Cadhalpun
sbgdec: prevent NULL pointer access
Reviewed-by: Josh de Kock <josh at itanimul.li>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
(cherry picked from commit dbefbb61b785cd77810c032f5cdb499d2a92df07)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun at googlemail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=22cd4aa22116a365d611091916a3eff74e21ec3f
---
libavformat/sbgdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/sbgdec.c b/libavformat/sbgdec.c
index 03cd922..659dfc8 100644
--- a/libavformat/sbgdec.c
+++ b/libavformat/sbgdec.c
@@ -927,7 +927,7 @@ static void expand_timestamps(void *log, struct sbg_script *s)
}
}
if (s->start_ts == AV_NOPTS_VALUE)
- s->start_ts = s->opt_start_at_first ? s->tseq[0].ts.t : now;
+ s->start_ts = (s->opt_start_at_first && s->tseq) ? s->tseq[0].ts.t : now;
s->end_ts = s->opt_duration ? s->start_ts + s->opt_duration :
AV_NOPTS_VALUE; /* may be overridden later by -E option */
cur_ts = now;
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