From 0b75b6c3cd2cb4775729bf019c25c4792a2729d4 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Tue, 18 Nov 2014 04:04:37 +0100
Subject: avformat/mp3dec: avoid seeking to negative positions

Fixes Ticket4038

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavformat/mp3dec.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'libavformat/mp3dec.c')

diff --git a/libavformat/mp3dec.c b/libavformat/mp3dec.c
index 8208dbb628..c4c1bb7ca5 100644
--- a/libavformat/mp3dec.c
+++ b/libavformat/mp3dec.c
@@ -457,6 +457,10 @@ static int mp3_seek(AVFormatContext *s, int stream_index, int64_t timestamp,
         int64_t pos = ie->pos + (dir > 0 ? i - 1024 : -i);
         int64_t candidate = -1;
         int score = 999;
+
+        if (pos < 0)
+            continue;
+
         for(j=0; j<MIN_VALID; j++) {
             ret = check(s, pos);
             if(ret < 0)
-- 
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