Subject: bug#42655: 27.1; iconify-frame on a Lucid build may stuck the frame

From: Eli Zaretskii <[email-masked]>
Date: Thu, 06 Aug 2020 16:47:00 +0300

> From: Tino Calancha <[email-masked]>
> Cc: Bhavin Gandhi <[email-masked]>,  [email-masked],
>   [email-masked],  [email-masked],  [email-masked]
> Date: Thu, 06 Aug 2020 10:13:06 +0200
> 
> >   (gdb) p *$2->output_data.x
> >
> > This assumes that $2 is as you have show  previously, i.e. a pointer to struct frame that corresponds to the selected frame.
> 
> (gdb) xframe (selected_frame)
> $3 = (struct frame *) 0x234f888
> "[email-masked]"
> (gdb) p *$3->output_data.x
> $4 = {

Thanks.  Looks like we never get the MapNotify event from X windows?
Can you verify that, either by running the xev utility or by setting a
breakpoint in xterm.c:handle_one_xevent when MapNotify is handled, and
repeating the recipe?