GNU bug report logs - #17598
Emacs pretest 24.3.91 - AIX - SIGSEV when customize

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: gpion <at> lfdj.com, 17598 <at> debbugs.gnu.org, dmantipov <at> yandex.ru
Subject: bug#17598: Emacs pretest 24.3.91 - AIX - SIGSEV when customize
Date: Sun, 01 Jun 2014 00:12:24 -0700

Eli Zaretskii wrote:

> The changes to lisp.h intended to enhance debugging on AIX broke
> debugging when GCC 3.x is used to compile the code: I get "No symbol
> "VALMASK" in current context." when xbacktrace is invoked.

Sorry about that.  It appears you ran into GCC bug 23336, an old bug I 
wasn't familiar with.  By the time this bug was fixed in 2006, the GCC 
folks had stopped maintaining GCC 3.x.  See:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=23336

> I hope there's a way to
> define the relevant macros only for AIX, so that other platforms
> aren't affected, certainly not during the pretest.

I gave that a shot in emacs-24 bzr 117185.

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