The problem seems to be that GtkWidgetPaintable isn't triggering the "invalidate-contents" signal.
The test code related with the bug is `gtk-reftest.c'. In the `test_ui_file()` https://gitlab.gnome.org/GNOME/gtk/-/blob/4.14.5/testsuite/reftests/gtk- reftest.c?ref_type=tags#L349 function it calls `reftest_snapshot_ui_file()` https://gitlab.gnome.org/GNOME/gtk/-/blob/4.14.5/testsuite/reftests/reftest- snapshot.c?ref_type=tags#L296 to generate an snapshot of the GTK interface defined by an `.ui` file (which later would be compared with the interface generated by a file with the same name, but ended in `.ref.ui`). That function creates the UI using GtkBuilder(), and then it calls `snapshot_widget()` https://gitlab.gnome.org/GNOME/gtk/-/blob/4.14.5/testsuite/reftests/reftest- snapshot.c?ref_type=tags#L270 . This is the function that creates the snapshot itself. To do so, it creates a GtkWidgetPaintable from the passed window, connects to the "invalidate-contents" signal, and enters a GMainLoop to wait for it. When it arrives, it calls `draw_paintable()` https://gitlab.gnome.org/GNOME/gtk/-/blob/4.14.5/testsuite/reftests/reftest- snapshot.c?ref_type=tags#L223 which creates the picture and launches an idle timeout to quit the GMainLoop. Unfortunately, in some of the tests, the signal is never triggered by the GtkWidgetPaintable, so `draw_paintable()` is never called and the test never exits the GMainLoop. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/2119291 Title: mesa 25.0.7 SRU breaks gtk4 on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk4/+bug/2119291/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
