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From: David Engster <deng@randomsample.de>
To: David Reitter <david.reitter@gmail.com>
Cc: Ian Eure <ian@digg.com>, Dan Nicolaescu <dann@ics.uci.edu>,
	Emacs Development <emacs-devel@gnu.org>
Subject: Re: gcc 4.2 dump problems
Date: Tue, 25 Aug 2009 15:18:49 +0200	[thread overview]
Message-ID: <m21vn0t4jq.fsf@gwdg-mac-engster.top.gwdg.de> (raw)
In-Reply-To: <016ACD5B-B97C-4548-89C5-E1E6A581CC61@gmail.com> (David Reitter's message of "Thu, 6 Aug 2009 15:03:39 -0400")

I'm reviving this old thread, since I'm now facing the same problem with
the arrival of Mac OS X 10.6...

David Reitter <david.reitter@gmail.com> writes:
> On Aug 6, 2009, at 2:24 PM, Dan Nicolaescu wrote:
>> I don't use gcc-4.2 anymore, but I've never seen such problems with it
>> on GNU/Linux while using it.
>>
>> How did you determine that gcc-4.2 is the problem?
>
> See Ian Eure's post to bug 3708 for this.  He installed GCC 4.2 on a
> 10.5 machine and obtained similar results.
> The error messages differ at times, but they do that on the 10.6
> machine that I tried it on, too.
> (Building with 4.0 on 10.5 works fine.)

I consistently get the same error on 10.6, and it's the one with 

unexec: unrecognized section name in __DATA segment

This unrecognized section in the DATA segment is called
"__program_vars", and I cannot find any documentation for it. It's not
mentioned in the Mach-O File Format Reference at all, even in the latest
XCode I installed from the Developer Connection.

So my guess is that unexecmacosx.c has to be patched to deal correctly
with that section. I don't know the first thing about this dumping
process, but I simply tried to include it in the section where
__la_symbol_ptr and __nl_symbol_ptr are handled, and it didn't work...

-David




  parent reply	other threads:[~2009-08-25 13:18 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-08-06 17:25 gcc 4.2 dump problems David Reitter
2009-08-06 18:09 ` Werner LEMBERG
2009-08-06 18:24 ` Dan Nicolaescu
2009-08-06 19:03   ` David Reitter
2009-08-06 19:29     ` Dan Nicolaescu
2009-08-25 13:18     ` David Engster [this message]
2009-08-25 15:56       ` Ian Eure
2009-08-25 16:15         ` David Reitter
2009-08-26 13:32         ` David Engster

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