X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/1c0558a07cef023d25f68f9b9fcc2bc9077ce453..b5e20476d6a84607af87913aedb9cb65724747e6:/pod/perldelta.pod diff --git a/pod/perldelta.pod b/pod/perldelta.pod index 3887d18..b701598 100644 --- a/pod/perldelta.pod +++ b/pod/perldelta.pod @@ -2,33 +2,118 @@ =head1 NAME -perldelta - what is new for perl v5.29.7 +[ 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 v5.29.9 =head1 DESCRIPTION -This document describes differences between the 5.29.6 release and the 5.29.7 +This document describes differences between the 5.29.8 release and the 5.29.9 release. -If you are upgrading from an earlier release such as 5.29.5, first read -L, which describes differences between 5.29.5 and 5.29.6. +If you are upgrading from an earlier release such as 5.29.7, first read +L, which describes differences between 5.29.7 and 5.29.8. + +=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 section. + +[ List each enhancement as a =head2 entry ] + +=head2 Unicode 12.0 is supported + +For details, see L. + +Because of a change in Unicode release cycles, Perl jumps from Unicode +10.0 in Perl 5.28 to Unicode 12.0 in Perl 5.30. + +=head2 It is now possible to compile perl to always use thread-safe +locale operations. + +Previously, these calls were only used when the perl was compiled to be +multi-threaded. To always enable them, add + + -Accflags='-DUSE_THREAD_SAFE_LOCALE' + +to your F flags. + + +=head1 Security + +XXX Any security-related notices go here. In particular, any security +vulnerabilities closed should be noted here rather than in the +L 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 below. + +[ List each incompatible change as a =head2 entry ] + +=head2 C no longer can return malformed UTF-8 + +It croaks if it would otherwise return a UTF-8 string that contains +malformed UTF-8. This protects agains potential security threats. This +is considered a bug fix as well ([perl #131642]). =head1 Deprecations -=head2 In XS code, use of various macros dealing with UTF-8. +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. -This deprecation was scheduled to become fatal in 5.30, but has been -delayed to 5.32 due to problems that showed up with some CPAN modules. -For details of what's affected, see L. +=over + +=item XXX + +XXX Note that deprecated modules should be listed here even if they are listed +as an updated module in the L 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 * -A handful of small optimizations related to character folding -and character classes in regular expressions. +XXX =back @@ -48,6 +133,15 @@ 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 @@ -55,41 +149,70 @@ release manager will have to investigate the situation carefully.) =item * -L has been upgraded from version 2.21 to 2.22. +L has been upgraded from version 1.54 to 1.55. + +Debugging threaded code no longer deadlocks in C nor +C. =item * -L has been upgraded from version 1.842 to 1.843. +L has been upgraded from version 0.26 to 0.27. + +Warnings enabled by setting the C flag in +C<$PerlIO::encoding::fallback> are now only produced if warnings are +enabled with C or setting C<$^W>. =item * -L has been upgraded from version 1.35 to 1.36. +L has been upgraded from version 1.59 to 1.60. + +Added support for extra tracing of locking, this requires a +C<-DDEBUGGING> and extra compilation flags. + +=back -Variables C<< $Is_Win32 >> and C<< $Is_VMS >> are being initialized. +=head2 Removed Modules and Pragmata + +=over 4 =item * -L has been upgraded from version 0.64 to 0.65. +XXX =back =head1 Documentation +XXX Changes to files in F go here. Consider grouping entries by +file and be sure to link to the appropriate page, e.g. L. + +=head2 New Documentation + +XXX Changes which create B files in F go here. + +=head3 L + +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. +XXX Changes which significantly change existing files in F go here. +However, any changes to F should go in the L +section. + Additionally, the following selected changes have been made: -=head3 L +=head3 L =over 4 =item * -More specific documentation of paragraph mode. L<[perl #133722]|https://rt.perl.org/Ticket/Display.html?id=133722>. +XXX Description of the change here =back @@ -99,97 +222,231 @@ 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. +XXX New or changed warnings emitted by the core's C code go here. Also +include any changes in L that reconcile it to the 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 * + +XXX L + +=back + +=head3 New Warnings + +=over 4 + +=item * + +XXX L + +=back + =head2 Changes to Existing Diagnostics +XXX Changes (i.e. rewording) of diagnostic messages go here + =over 4 =item * -L +XXX Describe change here + +=back + +=head1 Utility Changes + +XXX Changes to installed programs such as F and F go here. +Most of these are built within the directory F. -The file and line number is now reported for this error. -L<[perl #133524]|https://rt.perl.org/Ticket/Display.html?id=133524> +[ List utility changes as a =head2 entry for each utility and =item +entries for each change +Use L with program names to get proper documentation linking. ] + +=head2 L + +=over 4 + +=item * + +XXX + +=back + +=head1 Configuration and Compilation + +XXX Changes to F, F, F, 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 section, instead. + +[ List changes as an =item entry ]. + +=over 4 + +=item * + +XXX =back =head1 Testing +XXX Any significant changes to the testing of a freshly built perl should be +listed here. Changes which create B files in F go here as do any +large changes to the testing harness (e.g. when parallel testing was added). +Changes to existing files in F 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 * -Fix intermittent tests which failed due to race conditions which -surface during parallel testing. L<[perl #133740]|https://rt.perl.org/Ticket/Display.html?id=133740>. +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 +directories, or new subdirectories and F 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 section. + +=over 4 + +=item XXX-some-platform + +XXX + +=back + +=head1 Internal Changes + +XXX Changes which affect the interface available to C 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 * -Thoroughly test paragraph mode, using a new test file, -F. L<[perl #133722]|https://rt.perl.org/Ticket/Display.html?id=133722>. +Added C to copy a SV without processing get magic on +the source. [perl #132964] =back =head1 Selected Bug Fixes +XXX Important bug fixes in the core language are summarized here. Bug fixes in +files in F and F are best summarized in L. + +[ List each fix as an =item entry ] + =over 4 =item * -Fixed a failure to match properly. +C no longer can return malformed UTF-8. It croaks if it would +otherwise return a UTF-8 string that contains malformed UTF-8. This +protects agains potential security threats. [perl #131642] + +=back -An EXACTFish regnode has a finite length it can hold for the string -being matched. If that length is exceeded, a second node is used for -the next segment of the string, for as many regnodes as are needed. -Care has to be taken where to break the string, in order to deal -multi-character folds in Unicode correctly. If we want to break a -string at a place which could potentially be in the middle of a -multi-character fold, we back off one (or more) characters, leaving -a shorter EXACTFish regnode. This backing off mechanism contained -an off-by-one error. L<[perl #133756]|https://rt.perl.org/Ticket/Display.html?id=133756>. +=head1 Known Problems -=item * +XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any +tests that had to be Ced for the release would be noted here. Unfixed +platform specific bugs also go here. -A bare C call with no previous file handle now returns true. -L<[perl #133721]|https://rt.perl.org/Ticket/Display.html?id=133721> +[ List each fix as an =item entry ] + +=over 4 =item * -Failing to compile a format now aborts compilation. Like other errors -in sub-parses this could leave the parser in a strange state, possibly -crashing perl if compilation continued. L<[perl #132158]|https://rt.perl.org/Ticket/Display.html?id=132158> +XXX =back -=head1 Acknowledgements +=head1 Errata From Previous Releases -Perl 5.29.7 represents approximately 5 weeks of development since Perl -5.29.6 and contains approximately 97,000 lines of changes across 350 files -from 8 authors. +=over 4 -Excluding auto-generated files, documentation and release tools, there were -approximately 27,000 lines of changes to 190 .pm, .t, .c and .h files. +=item * -Perl continues to flourish into its fourth decade thanks to a vibrant -community of users and developers. The following people are known to have -contributed the improvements that became Perl 5.29.7: +XXX Add anything here that we forgot to add, or were mistaken about, in +the perldelta of a previous release. -Abigail, Chris 'BinGOs' Williams, Eugen Konkov, Hauke D, James E Keenan, -Karl Williamson, Tomasz Konojacki, Tony Cook. +=back + +=head1 Obituary -The list above is almost certainly incomplete as it is automatically -generated from version control history. In particular, it does not include -the names of the (very much appreciated) contributors who reported issues to -the Perl bug tracker. +XXX If any significant core contributor or member of the CPAN community has +died, add a short obituary here. + +=head1 Acknowledgements -Many of the changes included in this version originated in the CPAN modules -included in Perl's core. We're grateful to the entire CPAN community for -helping Perl to flourish. +XXX Generate this with: -For a more complete list of all of Perl's historical contributors, please -see the F file in the Perl source distribution. + perl Porting/acknowledgements.pl v5.29.8..HEAD =head1 Reporting Bugs