=head1 NAME
-perldelta - what is new for perl v5.33.6
+[ 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 v5.35.3
=head1 DESCRIPTION
-This document describes differences between the 5.33.5 release and the
-5.33.6 release.
+This document describes differences between the 5.35.2 release and the 5.35.3
+release.
-If you are upgrading from an earlier release such as 5.33.4, first read
-L<perl5335delta>, which describes differences between 5.33.4 and 5.33.5.
+If you are upgrading from an earlier release such as 5.35.1, first read
+L<perl5352delta>, which describes differences between 5.35.1 and 5.35.2.
-=head1 Modules and Pragmata
+=head1 Notice
-=head2 Updated Modules and Pragmata
+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 ]
+
+=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
+
+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.
+
+=head2 Module removals
+
+XXX Remove this section if not applicable.
+
+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.
+
+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.
+
+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.
+
+=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 *
-L<feature> has been upgraded from version 1.61 to 1.62.
-
-Added the default enabled C<bareword_filehandles> feature.
+XXX
=back
-=head1 Documentation
+=head1 Modules and Pragmata
-=head2 New Documentation
+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.
-=head3 L<perlgov>
+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.)
-This document describes the goals, scope, system, and rules for Perl's new
-governance model.
+[ Within each section, list entries as an =item entry ]
-Other pod files, most notably L<perlpolicy>, were amended to reflect
-its adoption.
+=head2 New Modules and Pragmata
-=head2 Changes to Existing Documentation
+=over 4
-We have attempted to update the documentation to reflect the changes
-listed in this document. If you find any we have missed, open an issue
-at L<https://github.com/Perl/perl5/issues>.
+=item *
-Additionally, the following selected changes have been made:
+XXX Remove this section if not applicable.
+
+=back
-=head3 L<perlcommunity>
+=head2 Updated Modules and Pragmata
=over 4
=item *
-The freenode IRC URL has been updated.
+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
-=head3 L<perlfunc>
+=head2 Removed Modules and Pragmata
=over 4
=item *
-The L<localtime|perlfunc#localtime-EXPR> entry has been improved and now
-also states that the result of the function is always in English.
+XXX
=back
-=head3 L<perlsyn>
+=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, open an issue
+at L<https://github.com/Perl/perl5/issues>.
+
+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 *
-A new example shows how a lexical 'my' variable can be declared
-during the initialization of a 'for' loop.
+XXX Description of the change here
=back
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
+XXX Newly added diagnostic messages go under here, separated into New Errors
+and New Warnings
+
=head3 New Errors
=over 4
=item *
-L<Bareword filehandle "%s" not allowed under 'no feature|perldiag/"Bareword filehandle "%s" not allowed under 'no feature">
+XXX L<message|perldiag/"message">
+
+=back
+
+=head3 New Warnings
+
+=over 4
+
+=item *
-This accompanies the new L<bareword_filehandles|feature/"The 'bareword_filehandles' feature."> feature.
+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<Too few arguments for subroutine '%s' (got %d; expected %d)|perldiag/"Too few arguments for subroutine '%s' (got %d; expected %d)">
+XXX Describe change here
-Subroutine argument-count mismatch errors now include the number of
-given and expected arguments.
+=back
-=item *
+=head1 Utility Changes
-L<Too many arguments for subroutine '%s' (got %d; expected %d)|perldiag/"Too many arguments for subroutine '%s' (got %d; expected %d)">
+XXX Changes to installed programs such as F<perldoc> and F<xsubpp> go here.
+Most of these are built within the directory F<utils>.
-Subroutine argument-count mismatch errors now include the number of
-given and expected arguments.
+[ 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. ]
-=item *
+=head2 L<XXX>
-L<Lost precision when %s %f by 1|perldiag/"Lost precision when %s %f by 1">
+=over 4
+
+=item *
-This warning was only issued for positive too-large values when
-incrementing, and only for negative ones when decrementing.
-It is now issued for both of positive or negative too-large values.
-[L<GH #18333|https://github.com/Perl/perl5/issues/18333>]
+XXX
=back
=head1 Configuration and Compilation
+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 * Configure
+=item *
-A new probe tests for buggy implementations of the gcvt/qgcvt functions.
-[L<GH #18170|https://github.com/Perl/perl5/issues/18170>]
+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.
+
+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 *
-t/re/opt.t was added, providing a test harness for regexp optimization.
-[L<GH #18213|https://github.com/Perl/perl5/pull/18213>]
+XXX
-=item *
+=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.
-A workaround for CPAN distributions needing dot in @INC has been removed
-[L<GH #18394|https://github.com/Perl/perl5/pull/18394>].
-All distributions that previously required the workaround have now been
-adapted.
+=over 4
+
+=item XXX-some-platform
+
+XXX
=back
-=head1 Platform Support
+=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 Mac OS X
+=item XXX-some-platform
-A number of system libraries no longer exist as actual files on Big Sur,
-even though dlopen will pretend they do, so now we fall back to dlopen
-if a library file can not be found.
-[L<GH #18407|https://github.com/Perl/perl5/issues/18407>]
+XXX
-=item MS Windows
+=back
+
+=head1 Internal Changes
-perl can now be built with USE_QUADMATH on MS Windows using
-(32-bit and 64-bit) mingw-w64 ports of gcc.
-[L<GH #18465|https://github.com/Perl/perl5/pull/18465>]
+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.
-THe pl2bat.pl utility now needs access to ExtUtils::PL2Bat. This could
-cause failures in parallel builds.
+[ List each change as an =item entry ]
+
+=over 4
+
+=item *
+
+XXX
=back
=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 *
-Skip trying to constant fold an incomplete op tree
-[L<GH #18380|https://github.com/Perl/perl5/issues/18380>]
+XXX
-Constant folding of chained comparison op trees could fail under certain
-conditions, causing perl to crash. As a quick fix, constant folding is
-now skipped for such op trees. This also addresses
-[L<GH #17917|https://github.com/Perl/perl5/issues/17917>].
+=back
-=item *
+=head1 Known Problems
-%g formatting broken on Ubuntu-18.04, NVSIZE == 8
-[L<GH #18170|https://github.com/Perl/perl5/issues/18170>]
+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.
-Buggy libc implementations of the C<gcvt> and C<qgcvt> functions
-caused (s)printf to incorrectly truncated %g formatted numbers. A new
-Configure probe now checks for this, with the result that the libc
-C<sprintf> will be used in place of C<gcvt> and C<qgcvt>.
+[ List each fix as an =item entry ]
-Tests added as part of this fix also revealed related problems in
-some Windows builds. The makefiles for MINGW builds on Windows have
-thus been adjusted to use USE_MINGW_ANSI_STDIO by default, ensuring
-that such builds also provide correct (s)printf formatting of numbers.
+=over 4
=item *
-op.c: croak on "my $_" when "use utf8" is in effect
-[L<GH #18449|https://github.com/Perl/perl5/issues/18449>]
+XXX
-The lexical topic () feature experiment was removed in Perl v5.24 and
-declaring C<my $_> became a compile time error. However, it was still
-possible to make this declaration if utf8 was in effect.
+=back
-=item *
+=head1 Errata From Previous Releases
-regexec.c: Fix assertion failure
-[L<GH #18451|https://github.com/Perl/perl5/issues/18451>]
+=over 4
-Fuzzing triggered an assertion failure when too many characters were
-copied into a buffer.
+=item *
+
+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 v5.33.5..HEAD
+ perl Porting/acknowledgements.pl v5.35.2..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff