[FFmpeg-cvslog] avcodec/wavpack: Fix runtime error: signed integer overflow: -1386217472 * 4 cannot be represented in type 'int'

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun May 28 12:56:25 2017 +0200| [c51357d206f2ad58c9d9610cf85b6ea5dd88f501] | committer: Michael Niedermayer

avcodec/wavpack: Fix runtime error: signed integer overflow: -1386217472 * 4 cannot be represented in type 'int'

Fixes: 1853/clusterfuzz-testcase-minimized-5471155626442752

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=c51357d206f2ad58c9d9610cf85b6ea5dd88f501
---

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

diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index 3b3c6b2d16..8c621500b7 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -310,7 +310,7 @@ static float wv_get_value_float(WavpackFrameContext *s, uint32_t *crc, int S)
     }
 
     if (S) {
-        S  *= 1 << s->float_shift;
+        S  *= 1U << s->float_shift;
         sign = S < 0;
         if (sign)
             S = -S;