[FFmpeg-cvslog] avformat/utils: Fix "libavformat/utils.c:927:35: runtime error: signed integer overflow: -2450238577049583619 - 9223090561878065151 cannot be represented in type long long "

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Thu Dec  3 21:54:43 2015 +0100| [cafb19560401612a07760d230a50d9c1d0564daf] | committer: Michael Niedermayer

avformat/utils: Fix "libavformat/utils.c:927:35: runtime error: signed integer overflow: -2450238577049583619 - 9223090561878065151 cannot be represented in type long long"

Fixes Mozilla bug 1229205

Found-by: Tyson Smith
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=cafb19560401612a07760d230a50d9c1d0564daf
---

 libavformat/utils.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavformat/utils.c b/libavformat/utils.c
index e93a192..1103a64 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -912,7 +912,7 @@ static void update_initial_timestamps(AVFormatContext *s, int stream_index,
     AVStream *st       = s->streams[stream_index];
     AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
     int64_t pts_buffer[MAX_REORDER_DELAY+1];
-    int64_t shift;
+    uint64_t shift;
     int i, delay;
 
     if (st->first_dts != AV_NOPTS_VALUE ||
@@ -924,7 +924,7 @@ static void update_initial_timestamps(AVFormatContext *s, int stream_index,
     delay         = st->codec->has_b_frames;
     st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
     st->cur_dts   = dts;
-    shift         = st->first_dts - RELATIVE_TS_BASE;
+    shift         = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
 
     for (i = 0; i<MAX_REORDER_DELAY+1; i++)
         pts_buffer[i] = AV_NOPTS_VALUE;