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>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#29256: closed (maxima: The SGC segfault recovery test failed
 with memprotect_bad_fault_address, SGC disabled)
Date: Sat, 25 Nov 2017 14:16:01 +0000

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Your message dated Sat, 25 Nov 2017 22:15:06 +0800
with message-id <87fu928mxh.fsf <at> gmail.com>
and subject line Re: maxima: The SGC segfault recovery test failed with memprotect_bad_fault_address, SGC disabled
has caused the debbugs.gnu.org bug report #29256,
regarding maxima: The SGC segfault recovery test failed with memprotect_bad_fault_address, SGC disabled
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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

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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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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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