Prevent crash if display->touch_implicit_grabs is NULL.

2018-11-26 21:38:35 +09:00
parent 5294c4f6f3
commit 9e212cd981
1 changed files with 5 additions and 0 deletions
--- a/gdk/gdkdisplay.c
+++ b/gdk/gdkdisplay.c
@@ -1257,6 +1257,11 @@ _gdk_display_has_touch_grab (GdkDisplay       *display,
 {
  guint i;

+  g_return_val_if_fail (display, NULL);
+
+  if (!display->touch_implicit_grabs)
+    return NULL;
+
  for (i = 0; i < display->touch_implicit_grabs->len; i++)
    {
      GdkTouchGrabInfo *info;