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From: Paul Eggert <eggert@cs.ucla.edu>
To: Stefan Monnier <monnier@iro.umontreal.ca>, emacs-devel@gnu.org
Subject: Re: GDB and compiler-operations
Date: Fri, 7 Sep 2018 10:15:53 -0700	[thread overview]
Message-ID: <90fea1c0-4f97-bd7a-feee-fb1dde7af84c@cs.ucla.edu> (raw)
In-Reply-To: <jwvmustgv5y.fsf-monnier+gmane.emacs.devel@gnu.org>

On 09/07/2018 08:58 AM, Stefan Monnier wrote:
>> On a newer platform where GDB can see C macros (you really should enable
>> this if you can, by the way, it mak,es debugging easier),
> I'm on Debian testing, which doesn't strike me as old.
> How new does it need to be?

Sorry, don't know offhand. But tool age doesn't appear to apply to you 
(see below).

>
>> I see this:
>>
>> (gdb) p offsetof (struct Lisp_Vector, contents)
>> No symbol "__builtin_offsetof" in current context.
> Hmm... indeed that's the error I was seeing the other day, but today
> I get the other one.  IIRC this was the same machine, tho (and if not,
> it was one running Debian testing or Debian stable, so nothing newer).


Most likely when you were getting the other message you compiled with 
plain -g instead of -g3. './configure' tries to default to -g3 if 
available but perhaps you overrode that, or it didn't work for you.




  parent reply	other threads:[~2018-09-07 17:15 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-06  0:41 Lisp_Marker size on 32bit systems Stefan Monnier
2018-09-06  6:51 ` Paul Eggert
2018-09-06 12:17   ` Stefan Monnier
2018-09-07  7:15     ` Paul Eggert
2018-09-07  8:05       ` Eli Zaretskii
2018-09-07 13:45         ` Paul Eggert
2018-09-07 14:12           ` GDB and compiler-operations (was: Lisp_Marker size on 32bit systems) Stefan Monnier
2018-09-07 14:23             ` Eli Zaretskii
2018-09-07 15:16             ` GDB and compiler-operations Andreas Schwab
2018-09-07 15:48             ` GDB and compiler-operations (was: Lisp_Marker size on 32bit systems) Paul Eggert
2018-09-07 15:58               ` GDB and compiler-operations Stefan Monnier
2018-09-07 17:11                 ` Eli Zaretskii
2018-09-07 17:15                 ` Paul Eggert [this message]
2018-09-07 19:59             ` Tom Tromey
2018-09-07 14:19           ` Lisp_Marker size on 32bit systems Eli Zaretskii
2018-09-07 16:27             ` Paul Eggert
2018-09-07 17:16               ` Eli Zaretskii
2018-09-07 18:13                 ` Paul Eggert
2018-09-07 18:32                   ` Eli Zaretskii
2018-09-07 19:05                     ` Paul Eggert
2018-09-07 19:22                       ` Eli Zaretskii
2018-09-07 12:16       ` Stefan Monnier
2018-09-07 19:04         ` Paul Eggert
2018-09-07 19:45           ` Stefan Monnier
2018-09-07 21:03             ` Paul Eggert
2018-09-08  1:54               ` Stefan Monnier
2018-09-08  3:04                 ` Paul Eggert
2018-09-08  3:10                   ` Stefan Monnier

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