From 8965e2af921ec5926b26d5ae466ee4104bb5262b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Thu, 1 Feb 2018 14:56:49 +0200
Subject: [PATCH] avpacket: Initialize the allocated padding area in side data
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This makes sure that consumers of the side data actually can
rely on the padding as intended, without having the callers of
av_packet_new_side_data to explicitly zero initialize it.

Signed-off-by: Martin Storsjö <martin@martin.st>
---
 libavcodec/avpacket.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/avpacket.c b/libavcodec/avpacket.c
index 93e9eb6ae7d..c705df3d593 100644
--- a/libavcodec/avpacket.c
+++ b/libavcodec/avpacket.c
@@ -271,6 +271,7 @@ uint8_t *av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
     data = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
     if (!data)
         return NULL;
+    memset(data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
 
     ret = av_packet_add_side_data(pkt, type, data, size);
     if (ret < 0) {
-- 
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