From 305766a9fa079cbb96e8a80b3531b4c656a5e040 Mon Sep 17 00:00:00 2001
From: JamesP <jlp765@gmail.com>
Date: Thu, 24 Sep 2015 09:04:55 +1000
Subject: [PATCH] Bug fix: change non-fmRead file mode to set GENERIC_READ or
 GENERIC_WRITE instead of GENERIC_ALL which on 64bit windows rasied an
 [OSError] exception

---
 lib/pure/memfiles.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/pure/memfiles.nim b/lib/pure/memfiles.nim
index 633fd71eba..b9c574944c 100644
--- a/lib/pure/memfiles.nim
+++ b/lib/pure/memfiles.nim
@@ -116,7 +116,8 @@ proc open*(filename: string, mode: FileMode = fmRead,
     template callCreateFile(winApiProc, filename: expr): expr =
       winApiProc(
         filename,
-        if readonly: GENERIC_READ else: GENERIC_ALL,
+        # GENERIC_ALL != (GENERIC_READ or GENERIC_WRITE)
+        if readonly: GENERIC_READ else: GENERIC_READ or GENERIC_WRITE,
         FILE_SHARE_READ,
         nil,
         if newFileSize != -1: CREATE_ALWAYS else: OPEN_EXISTING,