From: Eli Zaretskii <eliz@gnu.org>
To: Alan Mackenzie <acm@muc.de>
Cc: dancol@dancol.org, emacs-devel@gnu.org
Subject: Re: Help please! To track down GC trying to free an already freed object.
Date: Wed, 03 Apr 2019 07:39:35 +0300 [thread overview]
Message-ID: <831s2jg0s8.fsf@gnu.org> (raw)
In-Reply-To: <20190402204653.GC25792@ACM> (message from Alan Mackenzie on Tue, 2 Apr 2019 20:46:53 +0000)
> Date: Tue, 2 Apr 2019 20:46:53 +0000
> From: Alan Mackenzie <acm@muc.de>
> Cc: Daniel Colascione <dancol@dancol.org>, emacs-devel@gnu.org
>
> > GDB supports reverse execution as well, on some platforms.
>
> On my GNU/Linux system, I tried to run 'reverse-next', and got the error
> message:
>
> Target multi-thread does not support this command.
I think you are supposed to record the execution, and then say
(gdb) target record-core
or
(gdb) target record-btrace
before the reverse execution is available.
But I was always able to debug GC problems by using last_marked array.
next prev parent reply other threads:[~2019-04-03 4:39 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-02 11:25 Help please! To track down GC trying to free an already freed object Alan Mackenzie
2019-04-02 15:04 ` Eli Zaretskii
2019-04-02 20:42 ` Alan Mackenzie
2019-04-03 4:43 ` Eli Zaretskii
2019-04-04 18:57 ` Alan Mackenzie
2019-04-02 19:09 ` Daniel Colascione
2019-04-02 19:21 ` Eli Zaretskii
2019-04-02 20:46 ` Alan Mackenzie
2019-04-02 21:03 ` Daniel Colascione
2019-04-03 4:39 ` Eli Zaretskii [this message]
2019-04-03 10:01 ` Alan Mackenzie
2019-04-03 10:12 ` Eli Zaretskii
2019-04-03 15:23 ` Paul Eggert
2019-04-02 20:24 ` Alan Mackenzie
2019-04-02 20:33 ` Daniel Colascione
2019-04-02 21:00 ` Alan Mackenzie
2019-04-05 4:49 ` Alex
2019-04-05 8:26 ` Alan Mackenzie
2019-04-05 17:05 ` Comparing symbol-with-position using eq (was: Help please! To track down GC trying to free an already freed object.) Alex
2019-04-05 18:21 ` Comparing symbol-with-position using eq Alan Mackenzie
2019-04-05 20:18 ` Daniel Colascione
2019-04-05 21:54 ` Alan Mackenzie
2019-04-05 22:50 ` Paul Eggert
2019-04-06 12:23 ` Clément Pit-Claudel
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