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bug#14062: 24.3.50; emacs_backtrace.txt
From: |
Eli Zaretskii |
Subject: |
bug#14062: 24.3.50; emacs_backtrace.txt |
Date: |
Mon, 15 Apr 2013 19:21:24 +0300 |
> Date: Mon, 15 Apr 2013 17:53:26 +0200
> From: martin rudalics <rudalics@gmx.at>
> CC: drew.adams@oracle.com, lekktu@gmail.com, 14062@debbugs.gnu.org
>
> > Only a non-leaf window can have its w->contents be something other
> > than a buffer, right? If BUFFERP(w->contents) returns zero
>
> ... for an internal window w->contents _must_ be another window, only
> for deleted windows this can be nil (but Dmitry would have to verify
> this, I didn't look at his last changes yet) ...
But for nil, BUFFERP will return zero, and the code that uses XBUFFER
should not be called, IMO.
> > and
> > XBUFFER hits an assertion violation, what else can this window be
> > except non-leaf?
>
> A window with an uninitialized contents field. Such windows exist from
> the moment they are allocated by make_window until they either get a
> child or a buffer in the contents field.
But the uninitialized contents field should be zero, no? Again, it
should not pass the BUFFERP test.
So the mystery still stands.
> > I don't think so. I examined the preprocessed source, and didn't see
> > any instance of missing parentheses. I added some just so someone who
> > looks at the macros won't wonder, like I did, whether this could be
> > the problem.
> >
> > But even if you are right, and the problem will now disappear, we can
> > still resolve this bug by simply going back to the original code.
>
> I don't think the problem will disappear this way.
Neither do I.
- bug#14062: 24.3.50; emacs_backtrace.txt, Eli Zaretskii, 2013/04/15
- bug#14062: 24.3.50; emacs_backtrace.txt, Juanma Barranquero, 2013/04/15
- bug#14062: 24.3.50; emacs_backtrace.txt, martin rudalics, 2013/04/15
- bug#14062: 24.3.50; emacs_backtrace.txt, Eli Zaretskii, 2013/04/15
- bug#14062: 24.3.50; emacs_backtrace.txt, martin rudalics, 2013/04/15
- bug#14062: 24.3.50; emacs_backtrace.txt,
Eli Zaretskii <=
- bug#14062: 24.3.50; emacs_backtrace.txt, martin rudalics, 2013/04/15
- bug#14062: 24.3.50; emacs_backtrace.txt, Eli Zaretskii, 2013/04/16
- bug#14062: 24.3.50; emacs_backtrace.txt, Drew Adams, 2013/04/22
- bug#14062: 24.3.50; emacs_backtrace.txt, Juanma Barranquero, 2013/04/22
- bug#14062: 24.3.50; emacs_backtrace.txt, Eli Zaretskii, 2013/04/22
- bug#14062: 24.3.50; emacs_backtrace.txt, Drew Adams, 2013/04/22