[FFmpeg-cvslog] avcodec/dca_xll: Fix runtime error: signed integer overflow: 2147286116 + 6298923 cannot be represented in type 'int'

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Wed Mar  8 21:35:51 2017 +0100| [ce010655a6b82d49bd8df179d73bcb5802a273c1] | committer: Michael Niedermayer

avcodec/dca_xll: Fix runtime error: signed integer overflow: 2147286116 + 6298923 cannot be represented in type 'int'

Fixes: 732/clusterfuzz-testcase-4872990070145024

See: [FFmpeg-devel] [PATCH 2/6] avcodec/dca_xll: Fix runtime error: signed integer overflow: 2147286116 + 6298923 cannot be represented in type 'int'
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ce010655a6b82d49bd8df179d73bcb5802a273c1
---

 libavcodec/dca_xll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/dca_xll.c b/libavcodec/dca_xll.c
index b7331e0..38a1999 100644
--- a/libavcodec/dca_xll.c
+++ b/libavcodec/dca_xll.c
@@ -1312,7 +1312,7 @@ static int combine_residual_frame(DCAXllDecoder *s, DCAXllChSet *c)
         } else {
             // No downmix scaling
             for (n = 0; n < nsamples; n++)
-                dst[n] += (src[n] + round) >> shift;
+                dst[n] += (unsigned)((src[n] + round) >> shift);
         }
     }