From 5c8cd76893b6035748ae406c6409d5a52cf8bcf9 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.alekhin@itseez.com>
Date: Mon, 30 Jun 2014 16:03:20 +0400
Subject: [PATCH] fix bug with invalid signature size (should not be less than
 signatureLength())

---
 modules/highgui/src/loadsave.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/highgui/src/loadsave.cpp b/modules/highgui/src/loadsave.cpp
index 6658b1335e..81c708acdd 100644
--- a/modules/highgui/src/loadsave.cpp
+++ b/modules/highgui/src/loadsave.cpp
@@ -137,9 +137,9 @@ static ImageDecoder findDecoder( const Mat& buf )
         maxlen = std::max(maxlen, len);
     }
 
+    string signature(maxlen, ' ');
     size_t bufSize = buf.rows*buf.cols*buf.elemSize();
     maxlen = std::min(maxlen, bufSize);
-    string signature(maxlen, ' ');
     memcpy( &signature[0], buf.data, maxlen );
 
     for( i = 0; i < codecs.decoders.size(); i++ )