From: Eli Zaretskii <eliz@gnu.org>
To: emacs-devel@gnu.org, help-gnu-emacs@gnu.org
Subject: Re: gdb doc
Date: Fri, 23 Mar 2007 15:04:02 +0200 [thread overview]
Message-ID: <uy7lo3yd9.fsf@gnu.org> (raw)
In-Reply-To: <26518830.269241174564751910.JavaMail.www@wwinf4206> (message from A Soare on Thu, 22 Mar 2007 12:59:11 +0100 (CET))
> From: A Soare <alinsoar@voila.fr>
> Cc: "Emacs Dev [emacs-devel]" <emacs-devel@gnu.org>,
> "Emacs Help [help-gnu-emacs]" <help-gnu-emacs@gnu.org>
> Date: Thu, 22 Mar 2007 12:59:11 +0100 (CET)
>
> Breakpoint 3, Feval (form=139269229) at eval.c:2205
> (gdb) p form
> $1 = 139269229
> (gdb) xcar form
> $2 = 0x8540b91
>
> Now I wish to do
>
> (gdb) commands
>
> and here I do not know how to write CONDITION in
>
> if <CONDITION>
> break
No, you need to say "break Feval if <CONDITION>".
> Can you help me a little mode to write the condition please?
I don't have time to write and test a complete script, sorry. You
will need to look in lisp.h for the definition of the XCAR macro, or
in src/.gdbinit for the definition of `xcar', and use the same
expressions in the condition. Something like the following
(untested!):
break Feval if ((struct Lisp_Cons *) ((gdb_use_union ? form.u.val : form & $valmask) | gdb_data_seg_bits))->car == Qplus
next prev parent reply other threads:[~2007-03-23 13:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-22 11:59 gdb doc A Soare
2007-03-23 13:04 ` Eli Zaretskii [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-03-22 12:50 A Soare
2007-03-23 14:51 A Soare
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