From b7a69943e8e64cd69bd118b2bda8c16d32d97122 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sat, 6 May 2017 15:17:29 +0200
Subject: [PATCH] avcodec/mimic: Fix runtime error: left shift of negative
 value -1

Fixes: 1365/clusterfuzz-testcase-minimized-5624158450876416

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit fc2c420b82939a8f30838a6aa08bfd936099d3ce)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
 libavcodec/mimic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/mimic.c b/libavcodec/mimic.c
index 24724fa75d..cad2245663 100644
--- a/libavcodec/mimic.c
+++ b/libavcodec/mimic.c
@@ -263,7 +263,7 @@ static int vlc_decode_block(MimicContext *ctx, int num_coeffs, int qscale)
 
         coeff = vlcdec_lookup[num_bits][value];
         if (pos < 3)
-            coeff <<= 4;
+            coeff *= 16;
         else /* TODO Use >> 10 instead of / 1001 */
             coeff = (coeff * qscale) / 1001;