From: Michael Gernoth <michael@gernoth.net>
Date: Wed, 16 Jan 2008 22:15:09 +0000 (+0100)
Subject: fix for crash when falling back from shared memory to wired mode.
X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/micropolis/commitdiff_plain/8cfa737d4e9cf94b623e6fb0d625e9196748acfb

fix for crash when falling back from shared memory to wired mode.
(the big_tile_pixmap is inaccessible while it is recreated, so
 do not try to access it)
---

diff --git a/src/sim/g_bigmap.c b/src/sim/g_bigmap.c
index d70225d..2b2bb9d 100644
--- a/src/sim/g_bigmap.c
+++ b/src/sim/g_bigmap.c
@@ -310,9 +310,11 @@ WireDrawBeegMapRect(SimView *view, short x, short y, short w, short h)
 
       if (tile != *ha) {
 	*ha = tile;
-	XCopyArea(view->x->dpy, view->x->big_tile_pixmap, view->pixmap,
+	if (view->x->big_tile_pixmap) {
+	  XCopyArea(view->x->dpy, view->x->big_tile_pixmap, view->pixmap,
 		  view->x->gc, 0, tile * 16, 16, 16,
 		  col * 16, row * 16);
+	}
       }
     }
     map += mm;