Hey everyone,

Following is the p5p (Perl 5 Porters) mailing list summary for the past week. Enjoy!

May 30th - June 8th

News and updates

Dave Mitchell provides his grant report. The majority of the work was fixing Scope::Upper.

Dave Mitchell also provides more detailed grant reports.

Perl now warns if you accidentally left version control markers! See more in Perl #127993.

Issues

New issues

• Perl #128302: split docs don't mention pattern modifiers.
• Perl #128295: Strange bug with -Dprefix=/usr and -Dversion.
• Perl #128307: Bleadperl breaks perl-lisp.
• Perl #128311: Typo in perldoc.
• Perl #128313: Memory leak in perl 5.24.0 when use re qw[strict] is used.
• Perl #128340: In-place sort incorrectly preserves element lvalue identity.

Resolved issues

• Perl #121734: Cygwin: setlocale(LC_ALL, "ja_JP.utf8") panic.
• Perl #127333: until( assignment ) doesn't warn when while( assignment ) does.
• Perl #127915: $=x~0 segfaults.
• Perl #127993: Version control conflict markers.
• Perl #128001: Quadmath builds segfault on repeat with a very large count.
• Perl #128279: hints/gnu.sh: Mis-detected prototypes on GNU/Hurd.
• Perl #128307: Bleadperl breaks perl-lisp.
• Perl #128316: CORE::socket() mangles EMFILE and turns it into EBADF.

Proposed patches

Father Chrysostomos opened Perl #128294 to skip tests of prereq modules in an internal utility, bisect-runner.pl. After discussions, this resulted in a patch to provide a skip functionality flag, --no-modules-tests.

Chad Granum provided a patch to update Test-Simple to the latest version, including silencing some noise and test failures. Chad also provided a patch in Perl #128337.

Sullivan Beck provided a patch to bump Locale::Codes from 3.38 to 3.39.

Following a conversation with Zefram and Tony Cook on the IRC channel, Breno G. de Oliveira provided a patch in Perl #128301 to test which operations "eagerly" create a hash entry. Zefram notes there are several other cases which we should cover in tests, while we're addressing this, and provides sample code.

Dominic Hargreaves sent a patch to address an assertion failure.

Discussion

Smylers notes that perlpodspec still promotes Pod::Parser despite being cleaned up by Karl Williamson as part of Perl #119439. Karl Williamson responds with further explanations on some of the finer points of replacing those bits in the docs in favor of Pod::Simple. Seems a bit difficult.

Smylers created Perl #128302 mentioning that the documentation for split do not mention that it can use pattern modifiers. The explanation (by Father Chrysostomos) is that a m// op is created at compile time, which itself can have pattern modifiers. Abigail notes that some (for example, /g) produce a warning.

Andy Dougherty notes that the change in Configure to make -O the default behavior has unintentionally introduced some breakage. Andy analyzes the problem and asks, was this worth it? You can find more about the problems raised in Perl #128295.

ExtUtils::MakeMaker 7.18 has breaking tests on Windows, both in Jenkins and smoking. This was eventually resolved upstream.

An aside from usual business, a user emailed about possible performance degradation in a script using OpenSSL. This was debugged as a benchmark problem, an OpenSSL function call, and a network issue.

Andy Lester provides a patch to fix a typo in perlhacktips pod in Perl #128331.

Karl Williamson asks to take a look at perltodo and update it.

Karl Williamson suggested deprecating the ability to quantify zero-length constructs in regular expressions. Why quantify nothing? Abigail notes that if you're generating code, deprecating this is not desired.

Father Chrysostomos asks for help debugging a program which seldom crashes. Lessons learned? There are various tools: gdb, valgrind, clang with address sanitizer, and rr.

Dan Collins sparked a conversation about the possible problems with in-place sort optimization. You can read additional thoughts in a ticket Zefram opened following this, Perl #128340.

Dan Collins had also been working on testing some old bugs. After verifying Perl #128313, he worked on a solution. You see his progress here.