From 002608224d6b78e607ad0be5fa95792471079784 Mon Sep 17 00:00:00 2001
From: Lionel Ulmer <lionel.ulmer@free.fr>
Date: Mon, 10 Oct 2005 19:53:37 +0000
Subject: [PATCH] Add an assert if both arguments to DD_STRUCT_COPY_BYSIZE are
 equal.

---
 dlls/ddraw/ddraw_private.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dlls/ddraw/ddraw_private.h b/dlls/ddraw/ddraw_private.h
index 8ab95d76138..aa9ee9c0a44 100644
--- a/dlls/ddraw/ddraw_private.h
+++ b/dlls/ddraw/ddraw_private.h
@@ -46,6 +46,7 @@
 	    	DWORD __size = (to)->dwSize;		\
 	    	DWORD __copysize = __size;		\
 	    	DWORD __resetsize = __size;		\
+		assert(to != from);                     \
 	        if (__resetsize > sizeof(*to))		\
 		    __resetsize = sizeof(*to);		\
 	    	memset(to,0,__resetsize);               \
-- 
2.11.4.GIT