http://www.tienza.es/crux/src/www.jwz.org/xscreensaver/xscreensaver-5.05.tar.gz

[xscreensaver] / hacks / flag.c

diff --git a/hacks/flag.c b/hacks/flag.c
index c74e921de4698e9ac3d9b07055bde42b24e016cd..c0c33b271456c0870ab5d2296fbdb993ce9a1a71 100644 (file)
--- a/hacks/flag.c
+++ b/hacks/flag.c
@@ -407,6 +407,7 @@ init_flag(ModeInfo * mi)
        fp = &flags[MI_SCREEN(mi)];
 
        make_flag_bits(mi);
+    if (!fp->image) abort();
 
        fp->width = MI_WIN_WIDTH(mi);
        fp->height = MI_WIN_HEIGHT(mi);
@@ -476,6 +477,7 @@ draw_flag(ModeInfo * mi)
        Window      window = MI_WINDOW(mi);
        flagstruct *fp = &flags[MI_SCREEN(mi)];
 
+    if (!fp->image) abort();
     if (fp->cache == window) {  /* not double-buffering */
       XClearWindow (display, window);
     } else if (fp->width <= MAXW(fp) || fp->height <= MAXH(fp)) {