GNU bug report logs - #29256
maxima: The SGC segfault recovery test failed with memprotect_bad_fault_address, SGC disabled

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Alex Vong <alexvong1995 <at> gmail.com>
Subject: bug#29256: closed (Re: maxima: The SGC segfault recovery test
 failed with memprotect_bad_fault_address, SGC disabled)
Date: Sat, 25 Nov 2017 14:16:02 +0000

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Your bug report

#29256: maxima: The SGC segfault recovery test failed with memprotect_bad_fault_address, SGC disabled

which was filed against the guix package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 29256 <at> debbugs.gnu.org.

-- 
29256: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=29256
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Alex Vong <alexvong1995 <at> gmail.com>
To: Kei Kebreau <kkebreau <at> posteo.net>
Cc: guix-devel <at> gnu.org, 29256-done <at> debbugs.gnu.org
Subject: Re: maxima: The SGC segfault recovery test failed with
 memprotect_bad_fault_address, SGC disabled
Date: Sat, 25 Nov 2017 22:15:06 +0800

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Kei Kebreau <kkebreau <at> posteo.net> writes:

> Kei Kebreau <kkebreau <at> posteo.net> writes:
>>
>> I turns out that the issue is with stratified garbage collection in
>> GCL. The substitute from hydra.gnu.org does in fact give me the error
>> when I run "(si::sgc-on t)" in the REPL. I'm preparing a patch to update
>> GCL to the version used in Debian stable (GCL git tag "pathnames1.13") and
>> we'll see if changing that definition on the master branch will do anything.
>
> On second thought, the patches applied to Debian Sid's GCL look useful
> as well. Anyway, keep an eye out for my update patch.

Thank you! The patch works, the warning has gone. I am closing this bug.

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From: Alex Vong <alexvong1995 <at> gmail.com>
To: bug-guix <at> gnu.org, guix-devel <at> gnu.org
Subject: maxima: The SGC segfault recovery test failed with
 memprotect_bad_fault_address, SGC disabled
Date: Sat, 11 Nov 2017 18:50:26 +0800

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Hello all,

When I start maxima, I get the following warning message:

The SGC segfault recovery test failed with memprotect_bad_fault_address, SGC disabled
The SGC segfault recovery test failed with memprotect_bad_fault_address, SGC disabled
Maxima 5.41.0 http://maxima.sourceforge.net
using Lisp GNU Common Lisp (GCL) GCL 2.6.12
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.

Actually I encountered this problem quite a while ago after an update,
but I didn't report it since it was not fetal.

Does anyone knows what's going on?

Cheers,
Alex

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