5 perl5233delta - what is new for perl v5.23.3
9 This document describes differences between the 5.23.2 release and the 5.23.3
12 If you are upgrading from an earlier release such as 5.23.1, first read
13 L<perl5232delta>, which describes differences between 5.23.1 and 5.23.2.
15 =head1 Core Enhancements
17 =head2 C<qr/(?[ ])/> now works in UTF-8 locales
19 L<Extended Bracketed Character Classes|perlrecharclass/Extended Bracketed Character Classes>
20 now will successfully compile when S<C<use locale>> is in effect. The compiled
21 pattern will use standard Unicode rules. If the runtime locale is not a
22 UTF-8 one, a warning is raised and standard Unicode rules are used
23 anyway. No tainting is done since the outcome does not actually depend
26 =head1 Incompatible Changes
28 =head2 An off by one issue in C<$Carp::MaxArgNums> has been fixed
30 C<$Carp::MaxArgNums> is supposed to be the number of arguments to display.
31 Prior to this version, it was instead showing C<$Carp::MaxArgNums> + 1 arguments,
32 contrary to the documentation.
34 =head1 Modules and Pragmata
36 =head2 Updated Modules and Pragmata
42 L<B> has been upgraded from version 1.58 to 1.59.
46 L<bignum> has been upgraded from version 0.39 to 0.40.
50 L<Carp> has been upgraded from version 1.36 to 1.37.
54 L<Compress::Raw::Zlib> has been upgraded from version 2.068 to 2.068_01.
58 L<DynaLoader> has been upgraded from version 1.33 to 1.34.
62 L<Encode> has been upgraded from version 2.76 to 2.77.
66 L<encoding> has been upgraded from version 2.16 to 2.17.
70 L<English> has been upgraded from version 1.09 to 1.10.
74 L<Errno> has been upgraded from version 1.23 to 1.24.
78 L<experimental> has been upgraded from version 0.013 to 0.014.
82 L<ExtUtils::MakeMaker> has been upgraded from version 7.04_01 to 7.10.
86 L<ExtUtils::ParseXS> has been upgraded from version 3.29 to 3.30.
90 L<ExtUtils::Typemaps> has been upgraded from version 3.29 to 3.30.
94 L<File::Find> has been upgraded from version 1.30 to 1.31.
98 L<File::Glob> has been upgraded from version 1.24 to 1.25.
102 L<File::Spec> has been upgraded from version 3.57 to 3.58.
106 L<Hash::Util::FieldHash> has been upgraded from version 1.15 to 1.17.
110 L<if> has been upgraded from version 0.0604 to 0.0605.
114 L<locale> has been upgraded from version 1.06 to 1.07.
118 L<Locale::Codes> has been upgraded from version 3.35 to 3.36.
122 L<Module::CoreList> has been upgraded from version 5.20150820 to 5.20150920.
126 L<mro> has been upgraded from version 1.17 to 1.18.
130 L<Pod::Perldoc> has been upgraded from version 3.25 to 3.25_01.
134 L<POSIX> has been upgraded from version 1.56 to 1.57.
138 L<Socket> has been upgraded from version 2.020 to 2.020_01.
142 L<Test> has been upgraded from version 1.26 to 1.27.
146 L<Thread::Queue> has been upgraded from version 3.05 to 3.06.
150 L<threads> has been upgraded from version 2.02 to 2.03.
154 L<Time::HiRes> has been upgraded from version 1.9726 to 1.9727_02.
158 L<Unicode::UCD> has been upgraded from version 0.62 to 0.63.
162 L<Win32> has been upgraded from version 0.51 to 0.52.
166 =head2 New Modules and Pragmata
172 L<Amiga::ARexx> has been added, as version 0.02
176 L<Amiga::Exec> has been added, as version 0.01
182 =head2 Changes to Existing Documentation
190 A number of cleanups have been made to perlcall, including:
196 use EXTEND(SP, n) and PUSHs() instead of XPUSHs() where applicable
197 and update prose to match
201 add POPu, POPul and POPpbytex to the "complete list of POP macros"
202 and clarify the documentation for some of the existing entries, and
203 a note about side-effects
207 add API documentation for POPu and POPul
211 use ERRSV more efficiently
215 approaches to thread-safety storage of SVs.
221 =head3 L<perlunicode>
227 Discourage use of 'In' prefix for Unicode Block property.
233 The following additions or changes have been made to diagnostic output,
234 including warnings and fatal error messages. For the complete list of
235 diagnostic messages, see L<perldiag>.
237 =head2 New Diagnostics
245 L<%s must not be a named sequence in transliteration operator|perldiag/"%s must not be a named sequence in transliteration operator">
247 (F) Transliteration (C<tr///> and C<y///>) transliterates individual
248 characters. But a named sequence by definition is more than an
249 individual charater, and hence doing this operation on it doesn't make
260 Parallel building has been added to the dmake C<makefile.mk> makefile. All
261 Win32 compilers are supported.
265 =head1 Platform Support
267 =head2 Platform-Specific Notes
271 =item EBCDIC C<cmp()> and C<sort()> fixed for UTF-EBCDIC strings
273 Comparing two strings that were both encoded in UTF-8 (or more
274 precisely, UTF-EBCDIC) did not work properly until now. Since C<sort()>
275 uses C<cmp()>, this fixes that as well.
277 =item EBCDIC C<tr///> and C<yr///> fixed for C<\N{}>, and C<S<use utf8>> ranges
279 Perl v5.22 introduced the concept of portable ranges to regular
280 expression patterns. A portable range matches the same set of
281 characters no matter what platform is being run on. This concept is now
282 extended to C<tr///>. See
283 C<L<trE<sol>E<sol>E<sol>|perlop/trE<sol>SEARCHLISTE<sol>REPLACEMENTLISTE<sol>cdsr>>.
285 There were also some problems with these operations under S<C<use
286 utf8>>, which are now fixed
294 Parallel building has been added to the dmake C<makefile.mk> makefile. All
295 Win32 compilers are supported.
301 The AmigaOS port has been reintegrated into the main tree, based off of
306 Don't add -shared when the compiler is clang++
310 =head1 Selected Bug Fixes
316 C<qr/(?[ () ])/> no longer segfaults, giving a syntax error message instead.
321 Regular expression possessive quantifier v5.20 regression now fixed.
322 C<qr/>I<PAT>C<{>I<min>,I<max>C<}+>C</> is supposed to behave identically
323 to C<qr/(?E<gt>>I<PAT>C<{>I<min>,I<max>C<})/>. Since v5.20, this didn't
324 work if I<min> and I<max> were equal. [perl #125825]
328 C<< BEGIN <> >> no longer segfaults and properly produces an error
329 message. [perl #125341]
333 In C<tr///> an illegal backwards range like C<tr/\x{101}-\x{100}//> was
334 not always detected, giving incorrect results. This is now fixed.
338 =head1 Acknowledgements
340 Perl 5.23.3 represents approximately 4 weeks of development since Perl 5.23.2
341 and contains approximately 150,000 lines of changes across 550 files from 30
344 Excluding auto-generated files, documentation and release tools, there were
345 approximately 120,000 lines of changes to 410 .pm, .t, .c and .h files.
347 Perl continues to flourish into its third decade thanks to a vibrant community
348 of users and developers. The following people are known to have contributed the
349 improvements that became Perl 5.23.3:
351 Aaron Crane, Alexander D'Archangel, Andy Broad, Chris 'BinGOs' Williams, Craig
352 A. Berry, Dan Collins, Daniel Dragan, David Mitchell, Father Chrysostomos,
353 James E Keenan, Jan Dubois, Jarkko Hietaniemi, Jerry D. Hedden, John SJ
354 Anderson, Karen Etheridge, Karl Williamson, Lukas Mai, Matthew Horsfall,
355 Nicolas R., Peter John Acklam, Peter Martini, Ricardo Signes, Shlomi Fish,
356 Steffen Müller, Steve Hay, Sullivan Beck, Thomas Sibley, Todd Rinaldo, Tony
357 Cook, Zachary Storer.
359 The list above is almost certainly incomplete as it is automatically generated
360 from version control history. In particular, it does not include the names of
361 the (very much appreciated) contributors who reported issues to the Perl bug
364 Many of the changes included in this version originated in the CPAN modules
365 included in Perl's core. We're grateful to the entire CPAN community for
366 helping Perl to flourish.
368 For a more complete list of all of Perl's historical contributors, please see
369 the F<AUTHORS> file in the Perl source distribution.
371 =head1 Reporting Bugs
373 If you find what you think is a bug, you might check the articles recently
374 posted to the comp.lang.perl.misc newsgroup and the perl bug database at
375 L<https://rt.perl.org/> . There may also be information at
376 L<http://www.perl.org/> , the Perl Home Page.
378 If you believe you have an unreported bug, please run the L<perlbug> program
379 included with your release. Be sure to trim your bug down to a tiny but
380 sufficient test case. Your bug report, along with the output of C<perl -V>,
381 will be sent off to perlbug@perl.org to be analysed by the Perl porting team.
383 If the bug you are reporting has security implications, which make it
384 inappropriate to send to a publicly archived mailing list, then please send it
385 to perl5-security-report@perl.org. This points to a closed subscription
386 unarchived mailing list, which includes all the core committers, who will be
387 able to help assess the impact of issues, figure out a resolution, and help
388 co-ordinate the release of patches to mitigate or fix the problem across all
389 platforms on which Perl is supported. Please only use this address for
390 security issues in the Perl core, not for modules independently distributed on
395 The F<Changes> file for an explanation of how to view exhaustive details on
398 The F<INSTALL> file for how to build Perl.
400 The F<README> file for general stuff.
402 The F<Artistic> and F<Copying> files for copyright information.