From 718d07fe5ed14424ed88195c91c4d52fbcc84065 Mon Sep 17 00:00:00 2001
From: Benjamin Bihler <benjamin.bihler@compositence.de>
Date: Thu, 11 Jul 2019 11:16:12 +0200
Subject: [PATCH] 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.
---
 src/OSD/OSD_OpenFile.cxx | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

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)
-- 
2.39.5