GNU bug report logs - #14062
24.3.50; emacs_backtrace.txt

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Message #63 received at 14062 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Juanma Barranquero <lekktu <at> gmail.com>
Cc: rudalics <at> gmx.at, 14062 <at> debbugs.gnu.org, drew.adams <at> oracle.com
Subject: Re: bug#14062: 24.3.50; emacs_backtrace.txt
Date: Mon, 22 Apr 2013 21:05:53 +0300

> From: Juanma Barranquero <lekktu <at> gmail.com>
> Date: Mon, 22 Apr 2013 18:12:13 +0200
> Cc: Eli Zaretskii <eliz <at> gnu.org>, martin rudalics <rudalics <at> gmx.at>, 14062 <at> debbugs.gnu.org
> 
> ??
> ??:0
> w32_backtrace at w32fns.c:7687
> emacs_abort at w32fns.c:7719
> terminate_due_to_signal at emacs.c:343
> die at alloc.c:6522
> w32_wnd_proc at w32fns.c:3127

Thanks!  the trap worked again!  This is here:

  #ifdef ENABLE_CHECKING
	    /* Temporary code to catch crashes in computing form.rcArea.top.  */
	    eassert (FRAMEP (w->frame));
	    eassert (BUFFERP (w->contents));  <<<<<<<<<<<<<<<<<<<<<<<<

So the cause for the assertion violation is now crystal clear, and I
will commit a work-around soon.  (I still don't understand how such a
window ended up here, and why didn't the BUFFERP test in
WINDOW_WANTS_HEADER_LINE_P catch the problem before XBUFFER aborted.)

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