From a48b24e5ebdb21d25512ac481a1d396e7685f0a4 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 14 Mar 2015 17:11:59 +0100 Subject: [PATCH] avcodec/wmadec: Fix undefined shift in wma_decode_block() Found-by: Clang -fsanitize=shift Reported-by: Thierry Foucu Signed-off-by: Michael Niedermayer --- libavcodec/wmadec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c index d80bd2bb71..ffbf511adc 100644 --- a/libavcodec/wmadec.c +++ b/libavcodec/wmadec.c @@ -697,7 +697,7 @@ static int wma_decode_block(WMACodecContext *s) /* very high freqs : noise */ n = s->block_len - s->coefs_end[bsize]; - mult1 = mult * exponents[((-1 << bsize)) >> esize]; + mult1 = mult * exponents[(-(1 << bsize)) >> esize]; for (i = 0; i < n; i++) { *coefs++ = s->noise_table[s->noise_index] * mult1; s->noise_index = (s->noise_index + 1) & (NOISE_TAB_SIZE - 1);