From cc5033f6749d3ec5fb229882f4226f79223bd7cc Mon Sep 17 00:00:00 2001
From: Dmitry Gorbachev <gorbachev@reactos.org>
Date: Thu, 21 Nov 2013 20:44:49 +0000
Subject: [PATCH] [NTOSKRNL] Trick GCC into not optimizing out RtlMoveMemory.

svn path=/trunk/; revision=61066
---
 reactos/ntoskrnl/vdm/vdmmain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/vdm/vdmmain.c b/reactos/ntoskrnl/vdm/vdmmain.c
index e9136599791..eacc5b6d629 100644
--- a/reactos/ntoskrnl/vdm/vdmmain.c
+++ b/reactos/ntoskrnl/vdm/vdmmain.c
@@ -93,7 +93,7 @@ VdmpInitialize(PVOID ControlData)
     NTSTATUS Status;
     HANDLE PhysMemHandle;
     PVOID BaseAddress;
-    PVOID NullAddress = NULL;
+    volatile PVOID NullAddress = NULL;
     LARGE_INTEGER Offset;
     ULONG ViewSize;