From: Benjamin Bihler <benjamin.bihler@compositence.de>
Date: Thu, 11 Jul 2019 09:16:12 +0000 (+0200)
Subject: 0030403: Application Framework - Overwriting Big BinOcaf Files Does Not Reduce Their... 
X-Git-Tag: V7_4_0_beta~82
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=718d07fe5ed14424ed88195c91c4d52fbcc84065;p=occt-copy.git

0030403: Application Framework - Overwriting Big BinOcaf Files Does Not Reduce Their Size

OSD_OpenFileDescriptor(), added truncating flag to fopen() flags for std::ios_base::out,
since truncating is implied by C++ output flag.
This fixes misbehavior of OSD_OpenStream() on MinGW-w64 platform.
---

diff --git a/src/OSD/OSD_OpenFile.cxx b/src/OSD/OSD_OpenFile.cxx
index ba8db4b724..72b54b08ea 100644
--- a/src/OSD/OSD_OpenFile.cxx
+++ b/src/OSD/OSD_OpenFile.cxx
@@ -34,14 +34,12 @@ static int OSD_OpenFile_iosMode2FileFlags (::std::ios_base::openmode theMode)
   {
     aFlags |= O_WRONLY;
     aFlags |= O_CREAT;
+    aFlags |= O_TRUNC;
+
     if (theMode & ::std::ios_base::app)
     {
       aFlags |= O_APPEND;
     }
-    if (theMode & ::std::ios_base::trunc)
-    {
-      aFlags |= O_TRUNC;
-    }
   }
 #ifdef _WIN32
   if (theMode & ::std::ios_base::binary)