Comment # 5 on bug 1186341 from Martin Wilck

@Werner: I asked on the #emacs channel in RC, and nobody else seems to see
this.

    From the core dump:

    The GdkEvent is:

     selection = {
        type = GDK_SELECTION_REQUEST,
        window = 0x2222900 [GdkX11Window],
        send_event = 0 '\000',
        selection = 0x1,
        target = 0x8d,
        property = 0x94,
        time = 0,
        requestor = 0x0

    problem in gdk_x11_window_foreign_new_for_display():

> 1270	  win->visual = gdk_x11_screen_lookup_visual (screen,
> 1271	                                              XVisualIDFromVisual (attrs.visual));

    (gdb) p attrs
    $29 = {
      x = -100,
      y = -100,
      width = 1,
      height = 1,
      border_width = 0,
      depth = 32,
      visual = 0x0,            <= visual ptr is NULL
      root = 422,
      class = 1,
      bit_gravity = 1,
      win_gravity = 1,
      backing_store = 0,
      backing_planes = 4294967295,
      backing_pixel = 0,
      save_under = 1,
      colormap = 90177537,
      map_installed = 0,
      map_state = 0,
      all_event_masks = 4423808,
      your_event_mask = 0,
      do_not_propagate_mask = 0,
      override_redirect = 1,
      screen = 0x22056b0
    }

    attrs had been derived here:

> 1248	  result = XGetWindowAttributes (display_x11->xdisplay, window, &attrs);