From 3016e919d4e1d90da98af19ce2a9d4979506eaf3 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Mon, 6 Mar 2017 21:52:36 +0100
Subject: [PATCH] avcodec/wavpack: Fix runtime error: left shift of negative
value -5
Fixes: 729/clusterfuzz-testcase-5154831595470848
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/wavpack.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index a4ba07fc834..943e46a25ca 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -273,7 +273,7 @@ static inline int wv_get_value_integer(WavpackFrameContext *s, uint32_t *crc,
unsigned bit;
if (s->extra_bits) {
- S <<= s->extra_bits;
+ S *= 1 << s->extra_bits;
if (s->got_extra_bits &&
get_bits_left(&s->gb_extra_bits) >= s->extra_bits) {
--
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