From: Mathieu Malaterre <mathieu.malaterre@gmail.com>
Date: Thu, 31 Jul 2008 14:53:14 +0000 (+0000)
Subject: Fix a potential out of array writing.
X-Git-Tag: v0.5~3410
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0afdedcafb4d524abfe2c958f17aafe4f1ab8d9a;p=platform%2Fupstream%2Flibav.git

Fix a potential out of array writing.
Patch by Mathieu Malaterre mathieu malaterre gmail com

Originally committed as revision 14487 to svn://svn.ffmpeg.org/ffmpeg/trunk
---

diff --git a/libavcodec/rle.c b/libavcodec/rle.c
index 802f7f3..6e468f8 100644
--- a/libavcodec/rle.c
+++ b/libavcodec/rle.c
@@ -70,9 +70,9 @@ int ff_rle_encode(uint8_t *outbuf, int out_size, const uint8_t *ptr , int bpp, i
         } else {
             /* fall back on uncompressed */
             count = count_pixels(ptr, w-x, bpp, 0);
+            if(out + bpp*count >= outbuf + out_size) return -1;
             *out++ = (count ^ xor_raw) + add_raw;
 
-            if(out + bpp*count > outbuf + out_size) return -1;
             memcpy(out, ptr, bpp * count);
             out += bpp * count;
         }