[FFmpeg-cvslog] avformat/dump: Fix integer overflow in av_dump_format()

[Michael Niedermayer]

ffmpeg | branch: release/2.8 | Michael Niedermayer <michael at niedermayer.cc> | Tue Dec  1 12:40:32 2015 +0100| [3d69716baefdbff3e5584f9de665bbba884667d6] | committer: Michael Niedermayer

avformat/dump: Fix integer overflow in av_dump_format()

Fixes part of mozilla bug 1229167

Found-by: Tyson Smith
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit 8e7f4520226d2d9ad6a58ad6c32d1455a8b244b2)

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=3d69716baefdbff3e5584f9de665bbba884667d6
---

 libavformat/dump.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavformat/dump.c b/libavformat/dump.c
index 705da82..08b8693 100644
--- a/libavformat/dump.c
+++ b/libavformat/dump.c
@@ -496,7 +496,7 @@ void av_dump_format(AVFormatContext *ic, int index,
         av_log(NULL, AV_LOG_INFO, "  Duration: ");
         if (ic->duration != AV_NOPTS_VALUE) {
             int hours, mins, secs, us;
-            int64_t duration = ic->duration + 5000;
+            int64_t duration = ic->duration + (ic->duration <= INT64_MAX - 5000 ? 5000 : 0);
             secs  = duration / AV_TIME_BASE;
             us    = duration % AV_TIME_BASE;
             mins  = secs / 60;