From 99c4c76cfbc4ae56dc8c37f5fab02f88f6b2cb48 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Wed, 17 May 2017 00:44:36 +0200
Subject: [PATCH] avcodec/takdec: Fix  runtime error: left shift of negative
 value -42

Fixes: 1635/clusterfuzz-testcase-minimized-4992749856096256

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/takdec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/takdec.c b/libavcodec/takdec.c
index 42939b4058..31d703135a 100644
--- a/libavcodec/takdec.c
+++ b/libavcodec/takdec.c
@@ -904,7 +904,7 @@ static int tak_decode_frame(AVCodecContext *avctx, void *data,
         for (chan = 0; chan < avctx->channels; chan++) {
             int32_t *samples = (int32_t *)frame->extended_data[chan];
             for (i = 0; i < s->nb_samples; i++)
-                samples[i] <<= 8;
+                samples[i] *= 1 << 8;
         }
         break;
     }