From 9a33264478796fd790a3bdc182fb1dda65d0a9de Mon Sep 17 00:00:00 2001
From: Justin Ruggles <justin.ruggles@gmail.com>
Date: Tue, 11 Oct 2011 14:38:21 -0400
Subject: apedec: assert that s->samples is not negative before trying to
 decode

---
 libavcodec/apedec.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'libavcodec/apedec.c')

diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c
index 8b1af80934..e9069031ad 100644
--- a/libavcodec/apedec.c
+++ b/libavcodec/apedec.c
@@ -26,6 +26,7 @@
 #include "get_bits.h"
 #include "bytestream.h"
 #include "libavutil/audioconvert.h"
+#include "libavutil/avassert.h"
 
 /**
  * @file
@@ -834,6 +835,10 @@ static int ape_decode_frame(AVCodecContext *avctx,
         return AVERROR(EINVAL);
     }
 
+    /* this should never be negative, but bad things will happen if it is, so
+       check it just to make sure. */
+    av_assert0(s->samples >= 0);
+
     if(!s->samples){
         uint32_t offset;
         void *tmp_data;
-- 
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