[FFmpeg-cvslog] avformat/avs: Use 64bit for the avio_tell() output

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun Oct 25 00:23:10 2020 +0200| [1278f117d75ab9238ef181ba29b31c6ea569571b] | committer: Michael Niedermayer

avformat/avs: Use 64bit for the avio_tell() output

Fixes: signed integer overflow: 9223372036854775807 - -1 cannot be represented in type 'long'
Fixes: 26549/clusterfuzz-testcase-minimized-ffmpeg_dem_AVS_fuzzer-4844306424397824

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=1278f117d75ab9238ef181ba29b31c6ea569571b
---

 libavformat/avs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/avs.c b/libavformat/avs.c
index 54b2c3f2a9..097c171908 100644
--- a/libavformat/avs.c
+++ b/libavformat/avs.c
@@ -128,7 +128,8 @@ avs_read_video_packet(AVFormatContext * s, AVPacket * pkt,
 static int avs_read_audio_packet(AVFormatContext * s, AVPacket * pkt)
 {
     AvsFormat *avs = s->priv_data;
-    int ret, size;
+    int ret;
+    int64_t size;
 
     size = avio_tell(s->pb);
     ret = ff_voc_get_packet(s, pkt, avs->st_audio, avs->remaining_audio_size);