From 402cfabc219dd4ccb25c10669114b840c7305524 Mon Sep 17 00:00:00 2001
From: kgv <kgv@opencascade.com>
Date: Fri, 27 May 2016 16:00:05 +0300
Subject: [PATCH] 0027522: Foundation Classes, FSD_BinaryFile - incorrect size
 check in a stream

FSD_BinaryFile::ReadExtendedString() now compares read bytes, not symbols.
---
 src/FSD/FSD_BinaryFile.cxx | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/FSD/FSD_BinaryFile.cxx b/src/FSD/FSD_BinaryFile.cxx
index 0a40d2d2c7..3f344161e2 100644
--- a/src/FSD/FSD_BinaryFile.cxx
+++ b/src/FSD/FSD_BinaryFile.cxx
@@ -1639,13 +1639,13 @@ void FSD_BinaryFile::ReadExtendedString (Standard_IStream& theIStream, TCollecti
       Storage_StreamReadError::Raise();
     }
 
-    theIStream.read ((char *)c, size*sizeof(Standard_ExtCharacter));
-
-    if (theIStream.gcount() != size)
+    const std::streamsize aNbBytes = std::streamsize(sizeof(Standard_ExtCharacter) * size);
+    theIStream.read ((char *)c, aNbBytes);
+    if (theIStream.gcount() != aNbBytes)
     {
       Storage_StreamReadError::Raise();
     }
-          
+
     c[size] = '\0';
 
 #if OCCT_BINARY_FILE_DO_INVERSE