From 1486ed0815a1f175060fa412aa917accba67c060 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 23 Dec 2013 18:09:58 +0100
Subject: [PATCH] avcodec/shorten: clear bitstream buffer

Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f3ca95606fb_6393_luckynight-partial.shn
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavcodec/shorten.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c
index 2bd35d22d0..8b91ed3645 100644
--- a/libavcodec/shorten.c
+++ b/libavcodec/shorten.c
@@ -432,6 +432,7 @@ static int shorten_decode_frame(AVCodecContext *avctx, void *data,
             av_log(avctx, AV_LOG_ERROR, "error allocating bitstream buffer\n");
             return AVERROR(ENOMEM);
         }
+        memset(tmp_ptr, 0, s->allocated_bitstream_size);
         s->bitstream = tmp_ptr;
     }