widget: Skip popovers in allocation

Native widgets get allocated via their surface,
so can skip them here. This avoids criticals when
re-mapping a popover for the second time, as can
be seen e.g. in the 'Selections' demo in gtk4-demo.

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 45fd23fb9c8a9e8b07f576d819f8a0b3040e5a2a..702f9a72c16dc4b25bd1499da8d6c00052f7883d 100644 (file)
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -3889,7 +3889,8 @@ gtk_widget_ensure_allocate_on_children (GtkWidget *widget)
        child != NULL;
        child = _gtk_widget_get_next_sibling (child))
     {
-      gtk_widget_ensure_allocate (child);
+      if (gtk_widget_should_layout (child))
+        gtk_widget_ensure_allocate (child);
     }
 }