avcodec/flacdec: Fix undefined shift in decode_subframe()

Fixes undefined behavior Fixes: 639961-media Found-by: Matt Wolenetz <wolenetz@google.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
8 years ago · 1f5630af51
parent c72fa43234
commit 1f5630af51
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/flacdec.c
+++ b/libavcodec/flacdec.c
@ -452,7 +452,7 @@ static inline int decode_subframe(FLACContext *s, int channel)
    if (wasted) {
        int i;
        for (i = 0; i < s->blocksize; i++)
-            decoded[i] <<= wasted;
+            decoded[i] = (unsigned)decoded[i] << wasted;
    }

    return 0;