? END
? PATCH_DDRAW
? START
Index: dlls/ddraw/dsurface/dib.c
===================================================================
RCS file: /home/wine/wine/dlls/ddraw/dsurface/dib.c,v
retrieving revision 1.17
diff -u -r1.17 dib.c
--- dlls/ddraw/dsurface/dib.c	18 Oct 2002 23:48:59 -0000	1.17
+++ dlls/ddraw/dsurface/dib.c	19 Oct 2002 08:51:40 -0000
@@ -802,14 +802,22 @@
     ddesc.dwSize = sizeof(ddesc);
     IDirectDrawSurface7_Lock(iface,NULL,&ddesc,DDLOCK_WRITEONLY,0);
 
-   if (!rsrc) {
+    if (!rsrc) {
 	   WARN("rsrc is NULL!\n");
 	   rsrc = &rsrc2;
 	   rsrc->left = rsrc->top = 0;
 	   rsrc->right = sdesc.dwWidth;
 	   rsrc->bottom = sdesc.dwHeight;
-   }
-
+    }
+    
+    if (((rsrc->left < 0) || (rsrc->left > sdesc.dwWidth)) ||	
+	((rsrc->right < 0) || (rsrc->right > sdesc.dwWidth)) ||
+	((rsrc->top < 0) || (rsrc->top > sdesc.dwHeight)) ||
+	((rsrc->bottom < 0) || (rsrc->bottom > sdesc.dwHeight))) {
+        WARN("Negative values in blit rectangles. Unhandled for now.\n");
+	return DDERR_UNSUPPORTED;
+    }
+    
     bpp = GET_BPP(This->surface_desc);
     sbuf = (BYTE *)sdesc.lpSurface+(rsrc->top*sdesc.u1.lPitch)+rsrc->left*bpp;
     dbuf = (BYTE *)ddesc.lpSurface+(dsty*ddesc.u1.lPitch)+dstx* bpp;