=head1 NAME
-perldelta - what is new for perl v5.31.3
+[ this is a template for a new perldelta file. Any text flagged as XXX needs
+to be processed before release. ]
+
+perldelta - what is new for perl v5.31.4
=head1 DESCRIPTION
-This document describes differences between the 5.31.2 release and the 5.31.3
+This document describes differences between the 5.31.3 release and the 5.31.4
release.
-If you are upgrading from an earlier release such as 5.31.1, first read
-L<perl5312delta>, which describes differences between 5.31.1 and 5.31.2.
+If you are upgrading from an earlier release such as 5.31.2, first read
+L<perl5313delta>, which describes differences between 5.31.2 and 5.31.3.
+
+=head1 Notice
+
+XXX Any important notices here
+
+=head1 Core Enhancements
+
+XXX New core language features go here. Summarize user-visible core language
+enhancements. Particularly prominent performance optimisations could go
+here, but most should go in the L</Performance Enhancements> section.
+
+[ List each enhancement as a =head2 entry ]
+
+=head2 Now can dump compiled patterns before optimization
+
+This is primarily useful for tracking down bugs in the regular
+expression compiler. This dump happens on C<-DDEBUGGING> perls, if you
+specify C<-Drv> on the command line; or on any perl if the pattern is
+compiled within the scope of S<C<use re qw(Debug DUMP_PRE_OPTIMIZE)>> or
+S<C<use re qw(Debug COMPILE EXTRA)>>. (All but the 2nd case display
+other information as well.)
+
+=head1 Security
+
+XXX Any security-related notices go here. In particular, any security
+vulnerabilities closed should be noted here rather than in the
+L</Selected Bug Fixes> section.
+
+[ List each security issue as a =head2 entry ]
=head1 Incompatible Changes
-=head2 Plain "0" string now treated as a number for range operator
+XXX For a release on a stable branch, this section aspires to be:
+
+ There are no changes intentionally incompatible with 5.XXX.XXX
+ If any exist, they are bugs, and we request that you submit a
+ report. See L</Reporting Bugs> below.
+
+[ List each incompatible change as a =head2 entry ]
+
+=head1 Deprecations
+
+XXX Any deprecated features, syntax, modules etc. should be listed here.
-Previously a range C< "0" .. "-1" > would produce a range of numeric
-strings from "0" through "99", this now produces an empty list, just
-as C< 0 .. -1 > does.
+=head2 Module removals
-This was due to a special case that treated strings starting with "0"
-as strings so ranges like C< "00" .. "03" > produced C< "00", "01",
-"02", "03" >, but didn't specially handle the string C<"0">.
+XXX Remove this section if not applicable.
-[perl #133695]
+The following modules will be removed from the core distribution in a
+future release, and will at that time need to be installed from CPAN.
+Distributions on CPAN which require these modules will need to list them as
+prerequisites.
-=head2 C<\K> now disallowed in look-ahead and look-behind assertions
+The core versions of these modules will now issue C<"deprecated">-category
+warnings to alert you to this fact. To silence these deprecation warnings,
+install the modules in question from CPAN.
-This was disallowed because it causes unexpected behaviour, and no-one
-could define what the desired behaviour was.
+Note that these are (with rare exceptions) fine modules that you are encouraged
+to continue to use. Their disinclusion from core primarily hinges on their
+necessity to bootstrapping a fully functional, CPAN-capable Perl installation,
+not usually on concerns over their design.
-[perl #124256]
+=over
+
+=item XXX
+
+XXX Note that deprecated modules should be listed here even if they are listed
+as an updated module in the L</Modules and Pragmata> section.
+
+=back
+
+[ List each other deprecation as a =head2 entry ]
+
+=head1 Performance Enhancements
+
+XXX Changes which enhance performance without changing behaviour go here.
+There may well be none in a stable release.
+
+[ List each enhancement as an =item entry ]
+
+=over 4
+
+=item *
+
+XXX
+
+=back
=head1 Modules and Pragmata
+XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/>
+go here. If Module::CoreList is updated, generate an initial draft of the
+following sections using F<Porting/corelist-perldelta.pl>. A paragraph summary
+for important changes should then be added by hand. In an ideal world,
+dual-life modules would have a F<Changes> file that could be cribbed.
+
+The list of new and updated modules is modified automatically as part of
+preparing a Perl release, so the only reason to manually add entries here is if
+you're summarising the important changes in the module update. (Also, if the
+manually-added details don't match the automatically-generated ones, the
+release manager will have to investigate the situation carefully.)
+
+[ Within each section, list entries as an =item entry ]
+
+=head2 New Modules and Pragmata
+
+=over 4
+
+=item *
+
+XXX Remove this section if not applicable.
+
+=back
+
=head2 Updated Modules and Pragmata
=over 4
=item *
-L<Devel::PPPort> has been upgraded from version 3.54 to 3.55.
+L<XXX> has been upgraded from version A.xx to B.yy.
+
+If there was something important to note about this change, include that here.
+
+=back
+
+=head2 Removed Modules and Pragmata
+
+=over 4
+
+=item *
+
+XXX
+
+=back
+
+=head1 Documentation
+
+XXX Changes to files in F<pod/> go here. Consider grouping entries by
+file and be sure to link to the appropriate page, e.g. L<perlfunc>.
+
+=head2 New Documentation
+
+XXX Changes which create B<new> files in F<pod/> go here.
+
+=head3 L<XXX>
+
+XXX Description of the purpose of the new file here
+
+=head2 Changes to Existing Documentation
+
+We have attempted to update the documentation to reflect the changes
+listed in this document. If you find any we have missed, send email
+to L<perlbug@perl.org|mailto:perlbug@perl.org>.
+
+XXX Changes which significantly change existing files in F<pod/> go here.
+However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
+section.
+
+Additionally, the following selected changes have been made:
+
+=head3 L<XXX>
+
+=over 4
+
+=item *
+
+XXX Description of the change here
+
+=back
+
+=head1 Diagnostics
+
+The following additions or changes have been made to diagnostic output,
+including warnings and fatal error messages. For the complete list of
+diagnostic messages, see L<perldiag>.
+
+XXX New or changed warnings emitted by the core's C<C> code go here. Also
+include any changes in L<perldiag> that reconcile it to the C<C> code.
+
+=head2 New Diagnostics
-The test files generated on Win32 are now identical to when they are
-generated on POSIX-like systems.
+XXX Newly added diagnostic messages go under here, separated into New Errors
+and New Warnings
+
+=head3 New Errors
+
+=over 4
=item *
-L<File::Find> has been upgraded from version 1.36 to 1.37.
+XXX L<message|perldiag/"message">
+
+=back
+
+=head3 New Warnings
-On Win32, the tests no longer require either a file in the drive root
-directory, or a writable root directory.
+=over 4
=item *
-L<Thread> has been upgraded from version 3.04 to 3.05.
+XXX L<message|perldiag/"message">
+
+=back
+
+=head2 Changes to Existing Diagnostics
+
+XXX Changes (i.e. rewording) of diagnostic messages go here
+
+=over 4
=item *
-L<Getopt::Long> has been upgraded from version 2.50 to 2.51.
+XXX Describe change here
+
+=back
+
+=head1 Utility Changes
+
+XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go here.
+Most of these are built within the directory F<utils>.
+
+[ List utility changes as a =head2 entry for each utility and =item
+entries for each change
+Use L<XXX> with program names to get proper documentation linking. ]
+
+=head2 L<XXX>
+
+=over 4
=item *
-L<Time::HiRes> has been upgraded from version 1.9761 to 1.9762.
+XXX
+
+=back
+
+=head1 Configuration and Compilation
-Removed obsolete code such as support for pre-5.6 perl and classic
-MacOS. [perl #134288]
+XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools
+go here. Any other changes to the Perl build process should be listed here.
+However, any platform-specific changes should be listed in the
+L</Platform Support> section, instead.
+
+[ List changes as an =item entry ].
+
+=over 4
=item *
-L<I18N::LangTags> has been upgraded from version 1.07 to 1.08.
+XXX
+
+=back
+
+=head1 Testing
+
+XXX Any significant changes to the testing of a freshly built perl should be
+listed here. Changes which create B<new> files in F<t/> go here as do any
+large changes to the testing harness (e.g. when parallel testing was added).
+Changes to existing files in F<t/> aren't worth summarizing, although the bugs
+that they represent may be covered elsewhere.
+
+XXX If there were no significant test changes, say this:
+
+Tests were added and changed to reflect the other additions and changes
+in this release.
-Document the C<IGNORE_WIN32_LOCALE> environment variable.
+XXX If instead there were significant changes, say this:
+
+Tests were added and changed to reflect the other additions and
+changes in this release. Furthermore, these significant changes were
+made:
+
+[ List each test improvement as an =item entry ]
+
+=over 4
=item *
-L<Test::Simple> has been upgraded from version 1.302164 to 1.302166.
+XXX
=back
=head1 Platform Support
+XXX Any changes to platform support should be listed in the sections below.
+
+[ Within the sections, list each platform as an =item entry with specific
+changes as paragraphs below it. ]
+
+=head2 New Platforms
+
+XXX List any platforms that this version of perl compiles on, that previous
+versions did not. These will either be enabled by new files in the F<hints/>
+directories, or new subdirectories and F<README> files at the top level of the
+source tree.
+
+=over 4
+
+=item XXX-some-platform
+
+XXX
+
+=back
+
+=head2 Discontinued Platforms
+
+XXX List any platforms that this version of perl no longer compiles on.
+
+=over 4
+
+=item XXX-some-platform
+
+XXX
+
+=back
+
=head2 Platform-Specific Notes
+XXX List any changes for specific platforms. This could include configuration
+and compilation changes or changes in portability/compatibility. However,
+changes within modules for platforms should generally be listed in the
+L</Modules and Pragmata> section.
+
=over 4
-=item Windows
+=item XXX-some-platform
-F<t/op/magic.t> could fail if environment varables starting with
-C<FOO> already existed.
+XXX
=back
=head1 Internal Changes
+XXX Changes which affect the interface available to C<XS> code go here. Other
+significant internal changes for future core maintainers should be noted as
+well.
+
+[ List each change as an =item entry ]
+
=over 4
=item *
-A new parser function L<parse_subsignature()|perlapi/parse_subsignature>
-allows a keyword plugin to parse a subroutine signature while C<use feature
-'signatures'> is in effect. This allows custom keywords to implement
-semantics similar to regular C<sub> declarations that include signatures.
-[perl #132474]
+XXX
-=item *
+=back
-Since on some platforms we need to hold a mutex when temporarily
-switching locales, new macros (C<STORE_LC_NUMERIC_SET_TO_NEEDED_IN>,
-C<WITH_LC_NUMERIC_SET_TO_NEEDED> and C<WITH_LC_NUMERIC_SET_TO_NEEDED_IN>)
-have been added to make it easier to do this safely and efficiently
-as part of [perl #134172].
+=head1 Selected Bug Fixes
+
+XXX Important bug fixes in the core language are summarized here. Bug fixes in
+files in F<ext/> and F<lib/> are best summarized in L</Modules and Pragmata>.
+
+[ List each fix as an =item entry ]
+
+=over 4
=item *
-The memory bookkeeping overhead for allocating an OP structure has been
-reduced by 8 bytes per OP on 64-bit systems.
+Perl no longer treats strings starting with "0x" or "0b" as hex or
+binary numbers respectively when converting a string to a number.
+This reverts a change in behaviour inadvertently introduced in perl
+5.30.0 intended to improve precision when converting a string to a
+floating point number. [perl #134230]
=back
-=head1 Selected Bug Fixes
+=head1 Known Problems
+
+XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any
+tests that had to be C<TODO>ed for the release would be noted here. Unfixed
+platform specific bugs also go here.
+
+[ List each fix as an =item entry ]
=over 4
=item *
-C<< $@ = 100; die; >> now correctly propagates the 100 as an exception
-instead of ignoring it. [perl #134291]
+XXX
-=item *
+=back
-C<< 0 0x@ >> no longer asserts in S_no_op(). [perl #134310]
+=head1 Errata From Previous Releases
+
+=over 4
=item *
-Exceptions thrown while C<$@> is read-only could result in infinite
-recursion as perl tried to update C<$@>, which throws another
-exception, resulting in a stack overflow. Perl now replaces C<$@>
-with a copy if it's not a simple writable SV. [perl #134266]
+XXX Add anything here that we forgot to add, or were mistaken about, in
+the perldelta of a previous release.
=back
+=head1 Obituary
+
+XXX If any significant core contributor or member of the CPAN community has
+died, add a short obituary here.
+
=head1 Acknowledgements
XXX Generate this with:
- perl Porting/acknowledgements.pl v5.31.2..HEAD
+ perl Porting/acknowledgements.pl v5.31.3..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff