GNU bug report logs - #29446
GNU grep 3.1 fails test suite when PCRE lacks JIT

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: "A. Wilcox" <awilfox <at> adelielinux.org>
Subject: bug#29446: closed (Re: GNU grep 3.1 fails test suite when PCRE
 lacks JIT)
Date: Wed, 09 Sep 2020 23:11:01 +0000

[Message part 1 (text/plain, inline)]

Your bug report

#29446: GNU grep 3.1 fails test suite when PCRE lacks JIT

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

The explanation is attached below, along with your original report.
If you require more details, please reply to 29446 <at> debbugs.gnu.org.

-- 
29446: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=29446
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Thomas Deutschmann <whissi <at> gentoo.org>
Cc: "A. Wilcox" <awilfox <at> adelielinux.org>, 29446-done <at> debbugs.gnu.org
Subject: Re: GNU grep 3.1 fails test suite when PCRE lacks JIT
Date: Wed, 9 Sep 2020 16:10:41 -0700

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On 1/2/20 1:47 PM, Thomas Deutschmann wrote:

> I managed to reproduce the error using pure Debian:

Thanks, with that recipe I reproduced the problem on Ubuntu 18.04.5, and 
installed the attached. I'll boldly close the bug report.

libpcre is quite a pain to use, and makes 'grep' less reliable. Perhaps somebody 
with some time could see whether libpcre2 is any better.

[0001-grep-fix-PCRE-JIT-test-when-JIT-not-available.patch (text/x-patch, attachment)]

[0002-grep-fix-logic-for-growing-PCRE-JIT-stack.patch (text/x-patch, attachment)]

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From: "A. Wilcox" <awilfox <at> adelielinux.org>
To: bug-grep <at> gnu.org
Subject: GNU grep 3.1 fails test suite when PCRE lacks JIT
Date: Sat, 25 Nov 2017 15:35:03 -0600

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Hi there grep developers,

I'm trying to package GNU grep 3.1 on 64-bit PowerPC (big-endian) for
our Linux distribution, Adélie Linux.  It seems to be working quite
well, except there is a failing test: pcre-jitstack.

"grep: internal PCRE error: -21" (which is PCRE_ERROR_RECURSIONLIMIT)
is printed.  I believe that this is because we have to disable JIT on
the ppc64 platform (because the JIT compiler is badly broken on it).

I am not very familiar with either of the grep or PCRE codebases so I
am not sure exactly how to best skip the test when PCRE does not have
JIT support enabled.  Otherwise, I would have included a patch.

Thank you for your time.

Best regards,
- --arw

- -- 
A. Wilcox (awilfox)
Project Lead, Adélie Linux
http://adelielinux.org
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