Introduce nullpointer checks and return null if validation fails

dnk · Mar 8, 2020 · c0a6175 · c0a6175
1 parent ff9ed6d
commit c0a6175
Showing 1 changed file with 7 additions and 4 deletions.
diff --git a/src/core/frame.c b/src/core/frame.c
@@ -407,10 +407,13 @@ meta_frame_sync_to_window (MetaFrame *frame,
 cairo_region_t *
 meta_frame_get_frame_bounds (MetaFrame *frame)
 {
-  return meta_ui_get_frame_bounds (frame->window->screen->ui,
-                                   frame->xwindow,
-                                   frame->rect.width,
-                                   frame->rect.height);
+  if(frame->xwindow && frame->window !=NULL && frame->window->screen  !=NULL && frame->window->screen->ui !=NULL)  {
+	return meta_ui_get_frame_bounds (frame->window->screen->ui,
+                                     frame->xwindow,
+                                     frame->rect.width,
+                                     frame->rect.height);
+  }
+  return NULL;
 }
 
 void