Hey everyone,

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

Enjoy!

November 13th-20th

News and Updates

Perl 5.27.6 has been released!

Karl Williamson updates about his branch for word-at-a-time searches for UTF-8 invariants. His branch provides up to 800% improvement in speed on 64 bit.

Grant Reports

• Dave Mitchell TPF Grant 2 September report.
• Dave Mitchell TPF Grant 2 weekly report #184.
• Dave Mitchell TPF Grant 2 weekly report #185.
• Zefram 2017 Week 44 report.
• Zefram 2017 Week 45 report.
• Zefram 2017 Week 46 report.

Issues

New Issues

• Perl #132442: lexical sub declare clears stack.
• Perl #132444: Parameter predicates in signatures.
• Perl #132446: pod2usage can invoke system($Config{pager},...) which is less -R => error.
• Perl #132449: -l treats globref as filename.
• Perl #132451: Custom cop_warnings take up 17 bytes per COP.
• Perl #132453: perl5 regexp: wrong content in capture buffer.
• Perl #132457: Time::HiRes t/alarm.t has a flapping test.
• Perl #132459: Problem with DB::db_complete: Can't use string ("::") as a HASH ref while "strict refs" in use.
• Perl #132460: Ambiguity regarding x operator in perlop.
• Perl #132461: \&foo deparsing is overlong.
• Perl #132463: uniprops out of date regarding \p{Word}.
• Perl #132467: Possible Net::FTP bug.
• Perl #132468: warnings.pm provides no way to specify the call frame.
• Perl #132471: New build warning.
• Perl #132472: aliasing in signatures.
• Perl #132473: smartmatch signatures.
• Perl #132474: signature parsing API function.
• Perl #132477: file size rounded in stat() and -s.
• Perl #132478: Add optional ICC-only support for using long doubles on Win32.
• Perl #132479: t/op/pack.t fails two tests in GCC "long doubles" builds on Windows.
• Perl #132480: defined operator not constant folded.

Resolved Issues

• Perl #38920: Filter::Simple error messages getting mangled inside require.
• Perl #89650: [META] lvalue subs.
• Perl #108778: no warnings "module name".
• Perl #108288: stat and -T do not set errno consistently.
• Perl #113714: B::Deparse and CORE.
• Perl #113716: B::Deparse and trailing colons.
• Perl #115258: 4-arg substr does not provide proper lvalue context.
• Perl #115266: s//$obj/ does not propagated taintedness of overloaded object.
• Perl #115650: "Truth and Falsehood" doesn't belong in perlsyn.
• Perl #119635: deprecate and remove qsort.
• Perl #125370: select on non-socket should be fatal on win32, not an error code.
• Perl #127624: corelist: wrong Digest::SHA version in 5.18.4?
• Perl #127697: newPVOP documentation is misleading.
• Perl #128708: recommended my sub example in perlsub leaks memory.
• Perl #129892: sub calls show as gv(IV \\).
• Perl #130447: Win32: Define __USE_MINGW_ANSI_STDIO for all gcc builds.
• Perl #132077: Replace multiple use vars by our.
• Perl #132080: Switch some core modules to XSLoader.
• Perl #132152: Bleadperl v5.27.2-65-gea710183d4 breaks SARTAK/NetHack-Item-0.21.tar.gz.
• Perl #132390: multiconcat breaks blead on VMS.
• Perl #132430: Multiconcat breaks AIX builds.
• Perl #132421: Compilation errors under non-english Visual C++ 2015/2017.
• Perl #132442: lexical sub declare clears stack.
• Perl #132429: B::Deparse generated code affected by use vars?
• Perl #132460: Ambiguity regarding x operator in perlop.
• Perl #132463: uniprops out of date regarding \p{Word}.

Rejected Issues

• Perl #3270: No check whether operators are overloaded to lvalue functions.
• Perl #92704: Inconsistent proto warnings.
• Perl #115858: Perl_debug_log and Perl_error_log macro handles must be cached to avoid multiple evaluation.
• Perl #115860: multiple evaluation problems in Perl_nextargv.
• Perl #121553: perlbug should offer to execute a mailto link.
• Perl #122122: [PATCH] PERL_UNUSED_CONTEXT audit.
• Perl #132443: Cygwin::win_to_posix_path() fails, possible memory corruption.
• Perl #132448: Carp quoting issue.

Suggested Patches

Steve Hay provided a patch in Perl #123113 to add optional GCC-only support for using long doubles on Win32.

Steve also provided a patch in Perl #125827 to PathTools to not require() modules in subs likely to be in loops.

Hauke D. provided a patch in Perl #132475 to handle LAYER argument in Tie::StdHandle::BINMODE.

Discussion

Paul Evans and Zefram discuss (Signature parsing compiler functions) an API for parsing signatures.

Zefram has a suggestion of utilizing the smart match syntax to support type checks in signatures.

Zefram also suggested moving signatures syntax to square brackets ([]).