5 perldelta - what is new for perl v5.35.3
9 This document describes differences between the 5.35.2 release and the 5.35.3
12 If you are upgrading from an earlier release such as 5.35.1, first read
13 L<perl5352delta>, which describes differences between 5.35.1 and 5.35.2.
17 With this release, the experimental C<switch> feature, present in every feature
18 bundle since they were introduced in v5.10, has been removed from the v5.36
19 bundle. If you want to live dangerously and use it, you'll have to enable it
22 =head1 Core Enhancements
24 All warnings are enabled automatically within the scope of
25 a C<L<use v5.35|perlfunc/use VERSION>> (or higher) declaration.
27 =head1 Modules and Pragmata
29 =head2 Updated Modules and Pragmata
35 L<Archive::Tar> has been upgraded from version 2.38 to 2.40.
39 L<diagnostics> has been upgraded from version 1.37 to 1.38.
43 L<Encode> has been upgraded from version 3.10 to 3.12.
47 L<feature> has been upgraded from version 1.66 to 1.67.
49 Added a simple API to check which features or feature bundles are
50 enabled. (github L<#18968|https://github.com/Perl/perl5/pull/18968>)
54 L<Module::CoreList> has been upgraded from version 5.20210723 to 5.20210820.
58 L<Opcode> has been upgraded from version 1.52 to 1.53.
62 L<Pod::Html> has been upgraded from version 1.31 to 1.32.
66 L<POSIX> has been upgraded from version 1.98 to 1.99.
70 L<sort> has been upgraded from version 2.04 to 2.05.
72 The C<sort> pragma is now a no-op, and its use is discouraged.
73 C<sort::current> now issues a deprecation warning and always returns I<stable>.
77 L<Storable> has been upgraded from version 3.23 to 3.24.
81 L<Text::Tabs> has been upgraded from version 2021.0717 to 2021.0804.
85 L<Text::Wrap> has been upgraded from version 2021.0717 to 2021.0804.
89 L<threads::shared> has been upgraded from version 1.62 to 1.63.
93 L<Time::HiRes> has been upgraded from version 1.9768 to 1.9769.
95 Makefile.PL now correct handles configuration set in perl hints.
96 (github L<#18953|https://github.com/Perl/perl5/issues/18953>)
100 L<Unicode::Normalize> has been upgraded from version 1.28 to 1.30.
104 L<warnings> has been upgraded from version 1.52 to 1.53.
108 L<XS::APItest> has been upgraded from version 1.17 to 1.18.
114 =head2 New Documentation
116 =head3 F<Porting/vote_admin_guide.pod>
118 This document provides the process for administering an election or vote
119 within the Perl Core Team.
121 =head2 Changes to Existing Documentation
123 We have attempted to update the documentation to reflect the changes
124 listed in this document. If you find any we have missed, open an issue
125 at L<https://github.com/Perl/perl5/issues>.
127 Additionally, the following selected changes have been made:
135 now notes that an invocant only needs to be an object or class name
136 for method calls, not for subroutine references.
140 =head3 L<perlexperiment>
146 notes the C<:win32> IO pseudolayer is removed (this happened in 5.35.2).
150 =head3 L<perldeprecation>
156 notes the new location for functions moved from L<Pod::Html> to
157 L<Pod::Html::Util> that are no longer intended to be used outside of core.
161 =head1 Configuration and Compilation
167 The makedepend step is now run in parallel by using make
169 This reduces the time for
171 time sh ./makedepend MAKE=make cflags
173 from 5 seconds to 2 seconds with MAKEFLAGS=-j8
177 F<Configure> now tests whether C<< #include <xlocale.h> >> is required
178 to use the POSIX 1003 thread-safe locale functions or some related
179 extensions. This prevents problems where a non-public F<xlocale.h> is
180 removed in a library update, or F<xlocale.h> isn't intended for public
181 use. (github L<#18936|https://github.com/Perl/perl5/pull/18936>)
185 =head1 Internal Changes
191 Macros have been added to F<perl.h> to facilitate version comparisons:
192 C<PERL_GCC_VERSION_GE>, C<PERL_GCC_VERSION_GT>, C<PERL_GCC_VERSION_LE> and
193 C<PERL_GCC_VERSION_LT>.
195 Inline functions have been added to F<embed.h> to determine the position of
196 the least significant 1 bit in a word: C<lsbit_pos32> and C<lsbit_pos64>.
200 =head1 Selected Bug Fixes
206 Use of the C<mktables> debugging facility would cause perl to croak since
207 v5.31.10; this problem has now been fixed.
211 C<makedepend> logic is now compatible with BSD make (fixes
212 L<GH #19046|https://github.com/Perl/perl5/issues/19046>).
216 =head1 Errata From Previous Releases
222 L<perl5300delta> mistakenly identified a CVE whose correct identification is CVE-2015-1592.
226 =head1 Acknowledgements
228 Perl 5.35.3 represents approximately 4 weeks of development since Perl
229 5.35.2 and contains approximately 16,000 lines of changes across 220 files
232 Excluding auto-generated files, documentation and release tools, there were
233 approximately 9,200 lines of changes to 140 .pm, .t, .c and .h files.
235 Perl continues to flourish into its fourth decade thanks to a vibrant
236 community of users and developers. The following people are known to have
237 contributed the improvements that became Perl 5.35.3:
239 Aristotle Pagaltzis, Asher Mancinelli, Ben Cornett, Biswapriyo Nath, Chris
240 'BinGOs' Williams, Dagfinn Ilmari Mannsåker, Dan Book, Dan Jacobson, David
241 Golden, David Mitchell, H.Merijn Brand, James E Keenan, Karen Etheridge,
242 Karl Williamson, Leon Timmermans, Max Maischein, Neil Bowers, Nicholas
243 Clark, Petar-Kaleychev, Ricardo Signes, Richard Leach, Slaven Rezic, TAKAI
244 Kousuke, Thibault Duponchelle, Tony Cook.
246 The list above is almost certainly incomplete as it is automatically
247 generated from version control history. In particular, it does not include
248 the names of the (very much appreciated) contributors who reported issues to
249 the Perl bug tracker.
251 Many of the changes included in this version originated in the CPAN modules
252 included in Perl's core. We're grateful to the entire CPAN community for
253 helping Perl to flourish.
255 For a more complete list of all of Perl's historical contributors, please
256 see the F<AUTHORS> file in the Perl source distribution.
258 =head1 Reporting Bugs
260 If you find what you think is a bug, you might check the perl bug database
261 at L<https://github.com/Perl/perl5/issues>. There may also be information at
262 L<http://www.perl.org/>, the Perl Home Page.
264 If you believe you have an unreported bug, please open an issue at
265 L<https://github.com/Perl/perl5/issues>. Be sure to trim your bug down to a
266 tiny but sufficient test case.
268 If the bug you are reporting has security implications which make it
269 inappropriate to send to a public issue tracker, then see
270 L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION>
271 for details of how to report the issue.
275 If you wish to thank the Perl 5 Porters for the work we had done in Perl 5,
276 you can do so by running the C<perlthanks> program:
280 This will send an email to the Perl 5 Porters list with your show of thanks.
284 The F<Changes> file for an explanation of how to view exhaustive details on
287 The F<INSTALL> file for how to build Perl.
289 The F<README> file for general stuff.
291 The F<Artistic> and F<Copying> files for copyright information.