=head1 NAME
-[ 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 v5.25.3
+perldelta - what is new for perl v5.25.4
=head1 DESCRIPTION
-This document describes differences between the 5.25.2 release and the 5.25.3
+This document describes differences between the 5.25.3 release and the 5.25.4
release.
-If you are upgrading from an earlier release such as 5.25.1, first read
-L<perl5252delta>, which describes differences between 5.25.1 and 5.25.2.
-
-=head1 Notice
-
-XXX Any important notices here
-
-=head1 Core Enhancements
+If you are upgrading from an earlier release such as 5.25.2, first read
+L<perl5253delta>, which describes differences between 5.25.2 and 5.25.3.
-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.
+=head1 Performance Enhancements
-[ List each enhancement as a =head2 entry ]
+=over 4
-=head2 Unicode 9.0 is now supported
+=item *
-A list of changes is at
-L<http://www.unicode.org/versions/Unicode9.0.0/>. Modules that are
-shipped with core Perl but not maintained by p5p do not necessarily
-support Unicode 9.0. L<Unicode::Normalize> does work on 9.0.
+The rather slow implementation for the experimental subroutine signatures
+feature has been made much faster; it is now comparable in speed with the
+old-style C<my ($a, $b, @c) = @_>.
-=head2 Use of C<\p{I<script>}> uses the improved Script_Extensions
-property
+=back
-Unicode 6.0 introduced an improved form of the Script (C<sc>) property,
-and called it Script_Extensions (C<scx>). As of now, Perl uses this
-improved version when a property is specified as just C<\p{I<script>}>.
-The meaning of compound forms, like C<\p{sc=I<script>}> are unchanged.
-This should make programs be more accurate when determining if a
-character is used in a given script, but there is a slight chance of
-breakage for programs that very specifically needed the old behavior.
-See L<perlunicode/Scripts>.
+=head1 Documentation
-=head1 Security
+=head2 Changes to Existing Documentation
-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.
+=head3 L<perlcall>
-[ List each security issue as a =head2 entry ]
+=over 4
-=head1 Incompatible Changes
+=item *
-XXX For a release on a stable branch, this section aspires to be:
+Removed redundant C<dSP> from an example.
- 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.
+=back
-[ List each incompatible change as a =head2 entry ]
+=head1 Modules and Pragmata
-=head1 Deprecations
+=head2 Updated Modules and Pragmata
-XXX Any deprecated features, syntax, modules etc. should be listed here.
+=over 4
-=head2 Module removals
+=item *
-XXX Remove this section if inapplicable.
+L<Archive::Tar> has been upgraded from version 2.08 to 2.10.
-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.
+=item *
-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.
+L<arybase> has been upgraded from version 0.11 to 0.12.
-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.
+=item *
-=over
+L<B> has been upgraded from version 1.62 to 1.63.
-=item XXX
+=item *
-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.
+L<B::Concise> has been upgraded from version 0.996 to 0.998.
-=back
+=item *
-[ List each other deprecation as a =head2 entry ]
+L<B::Deparse> has been upgraded from version 1.37 to 1.38.
-=head1 Performance Enhancements
+=item *
-XXX Changes which enhance performance without changing behaviour go here.
-There may well be none in a stable release.
+L<base> has been upgraded from version 2.23 to 2.24.
-[ List each enhancement as a =item entry ]
+=item *
-=over 4
+L<bignum> has been upgraded from version 0.43 to 0.43_01.
=item *
-XXX
-
-=back
+L<Carp> has been upgraded from version 1.41 to 1.42.
-=head2 C<scalar(%hash)> return signature changed
+=item *
-The value returned for C<scalar(%hash)> will no longer show information
-about the buckets allocated in the hash. It will simply return the count
-of used keys. It is thus equivalent to C<0+keys(%hash)>.
+L<Config::Perl::V> has been upgraded from version 0.26 to 0.27.
-A form of backwards compatibility is provided via C<Hash::Util::bucket_ratio()>
-which provides the same behavior as scalar(%hash) provided prior to
-Perl 5.25.
+=item *
-=head1 Modules and Pragmata
+L<CPAN> has been upgraded from version 2.14 to 2.14_01.
-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.
+=item *
-[ Within each section, list entries as a =item entry ]
+L<CPAN::Meta> has been upgraded from version 2.150005 to 2.150010.
-=head2 New Modules and Pragmata
+=item *
-=over 4
+L<Digest> has been upgraded from version 1.17 to 1.17_01.
=item *
-XXX
-
-=back
+L<Digest::SHA> has been upgraded from version 5.95 to 5.96.
-=head2 Updated Modules and Pragmata
+=item *
-=over 4
+L<Encode> has been upgraded from version 2.84 to 2.86.
=item *
-L<Module::CoreList> has been upgraded from version 5.20160620 to 5.20160720.
+L<encoding> has been upgraded from version 2.17_01 to 2.18.
=item *
-L<XXX> has been upgraded from version A.xx to B.yy.
+L<Errno> has been upgraded from version 1.25 to 1.26.
-=back
-
-=head2 Removed Modules and Pragmata
+=item *
-=over 4
+L<ExtUtils::MakeMaker> has been upgraded from version 7.18 to 7.24.
=item *
-XXX
+L<File::Fetch> has been upgraded from version 0.48 to 0.52.
-=back
-
-=head1 Documentation
+=item *
-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>.
+L<File::Spec> has been upgraded from version 3.64 to 3.65.
-=head2 New Documentation
+=item *
-XXX Changes which create B<new> files in F<pod/> go here.
+L<Hash::Util> has been upgraded from version 0.20 to 0.21.
-=head3 L<XXX>
+=item *
-XXX Description of the purpose of the new file here
+L<HTTP::Tiny> has been upgraded from version 0.058 to 0.064.
-=head2 Changes to Existing Documentation
+=item *
-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.
+L<I18N::LangTags> has been upgraded from version 0.40 to 0.41.
-=head3 L<XXX>
+=item *
-=over 4
+L<IO> has been upgraded from version 1.36 to 1.37.
=item *
-XXX Description of the change here
+L<IO-Compress> has been upgraded from version 2.069 to 2.069_01.
-=back
+=item *
-=head1 Diagnostics
+L<IO::Socket::IP> has been upgraded from version 0.37 to 0.38.
-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>.
+=item *
-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.
+L<IPC::Cmd> has been upgraded from version 0.94 to 0.96.
-=head2 New Diagnostics
+=item *
-XXX Newly added diagnostic messages go under here, separated into New Errors
-and New Warnings
+L<JSON::PP> has been upgraded from version 2.27400 to 2.27400_01.
-=head3 New Errors
+=item *
-=over 4
+L<Locale::Maketext> has been upgraded from version 1.27 to 1.28.
=item *
-XXX L<message|perldiag/"message">
-
-=back
+L<Locale::Maketext::Simple> has been upgraded from version 0.21 to 0.21_01.
-=head3 New Warnings
+=item *
-=over 4
+L<Memoize> has been upgraded from version 1.03 to 1.03_01.
=item *
-XXX L<message|perldiag/"message">
+L<Module::CoreList> has been upgraded from version 5.20160720 to 5.20160820.
-=back
+=item *
-=head2 Changes to Existing Diagnostics
+L<Module::Load::Conditional> has been upgraded from version 0.64 to 0.68.
-XXX Changes (i.e. rewording) of diagnostic messages go here
+=item *
-=over 4
+L<Module::Metadata> has been upgraded from version 1.000032 to 1.000033.
=item *
-XXX Describe change here
+L<Net::Ping> has been upgraded from version 2.43 to 2.44.
-=back
+=item *
-=head1 Utility Changes
+L<NEXT> has been upgraded from version 0.65 to 0.67.
-XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go here.
-Most of these are built within the directory F<utils>.
+=item *
-[ 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. ]
+L<Opcode> has been upgraded from version 1.35 to 1.37.
-=head2 L<XXX>
+=item *
-=over 4
+L<Pod::Html> has been upgraded from version 1.22 to 1.2201.
=item *
-XXX
+L<Pod::Perldoc> has been upgraded from version 3.25_02 to 3.27.
-=back
+=item *
-=head1 Configuration and Compilation
+L<POSIX> has been upgraded from version 1.70 to 1.71.
-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.
+=item *
-[ List changes as a =item entry ].
-
-=over 4
+L<Storable> has been upgraded from version 2.56 to 2.57.
=item *
-XXX
-
-=back
+L<Sys::Syslog> has been upgraded from version 0.34 to 0.34_01.
-=head1 Testing
+=item *
-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.
+L<Test> has been upgraded from version 1.28 to 1.29.
-[ List each test improvement as a =item entry ]
+=item *
-=over 4
+L<Test::Harness> has been upgraded from version 3.36 to 3.36_01.
=item *
-XXX
+L<Test::Simple> has been upgraded from version 1.302045 to 1.302052.
-=back
+=item *
-=head1 Platform Support
+L<Tie::Hash::NamedCapture> has been upgraded from version 0.09 to 0.10.
-XXX Any changes to platform support should be listed in the sections below.
+=item *
-[ Within the sections, list each platform as a =item entry with specific
-changes as paragraphs below it. ]
+L<Time::Local> has been upgraded from version 1.2300 to 1.24.
-=head2 New Platforms
+=back
-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.
+=head1 Configuration and Compilation
=over 4
-=item XXX-some-platform
+=item *
-XXX
+A probe for C<gai_strerror> was added to F<Configure> that checks if the
+the gai_strerror() routine is available and can be used to
+translate error codes returned by getaddrinfo() into human
+readable strings.
=back
-=head2 Discontinued Platforms
+=head1 Platform Support
-XXX List any platforms that this version of perl no longer compiles on.
+=head2 Platform-Specific Notes
=over 4
-=item XXX-some-platform
+=item Hurd
-XXX
+The hints for Hurd have been improved enabling malloc wrap and reporting the
+GNU libc used (previously it was an empty string when reported).
=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.
+=head1 Internal Changes
=over 4
-=item XXX-some-platform
+=item *
-XXX
+Three new ops, C<OP_ARGELEM>, C<OP_ARGDEFELEM> and C<OP_ARGCHECK> have
+been added. These are intended principally to implement the individual
+elements of a subroutine signature, plus any overall checking required.
=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 a =item entry ]
+=head1 Selected Bug Fixes
=over 4
=item *
-XXX
+Problems with in-place array sorts: code like C<@a = sort { ... } @a>,
+where the source and destination of the sort are the same plain array, are
+optimised to do less copying around. Two side-effects of this optimisation
+were that the contents of C<@a> as visible to to sort routine were
+partially sorted, and under some circumstances accessing C<@a> during the
+sort could crash the interpreter. Both these issues have been fixed, and
+Sort functions see the original value of C<@a>.
-=back
-
-=head1 Selected Bug Fixes
+=item *
-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>.
+Non-ASCII string delimiters are now reported correctly in error messages
+for unterminated strings. [perl #128701]
-[ List each fix as a =item entry ]
+=item *
-=over 4
+C<pack("p", ...)> used to emit its warning ("Attempt to pack pointer to
+temporary value") erroneously in some cases, but has been fixed.
=item *
-An assertion failure with C<%: = 0> has been fixed. [perl #128238]
+C<@DB::args> is now exempt from "used once" warnings. The warnings only
+occurred under B<-w>, because F<warnings.pm> itself uses C<@DB::args>
+multiple times.
=item *
-In Perl v5.18, the parsing of C<"$foo::$bar"> was accidentally changed,
-such that it would be treated as C<$foo."::".$bar>. The previous behavior,
-which was to parse it as C<$foo:: . $bar>, has been restored. [perl
-#128478]
+The use of built-in arrays or hash slices in a double-quoted string no
+longer issues a warning ("Possible unintended interpolation...") if the
+variable has not been mentioned before. This affected code like
+C<qq|@DB::args|> and C<qq|@SIG{'CHLD', 'HUP'}|>. (The special variables
+C<@-> and C<@+> were already exempt from the warning.)
-=back
+=item *
-=head1 Known Problems
+C<gethostent> and similar functions now perform a null check internally, to
+avoid crashing with torsocks. This was a regression from 5.22. [perl
+#128740]
-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.
+=item *
-[ List each fix as a =item entry ]
+C<defined *{'!'}>, C<defined *{'['}>, and C<defined *{'-'}> no longer leak
+memory if the typeglob in question has never been accessed before.
-=over 4
+=item *
+
+In 5.25.4 fchown() was changed not to accept negative one as an argument
+because in some platforms that is an error. However, in some other platforms
+that is an acceptable argument. This change has been reverted [perl #128967].
=item *
-XXX
+Mentioning the same constant twice in a row (which is a syntax error) no
+longer fails an assertion under debugging builds. This was a regression
+from 5.20. [perl #126482]
-=back
+=item *
-=head1 Errata From Previous Releases
+Many issues relating to C<printf "%a"> of hexadecimal floating point
+were fixed. In addition, the "subnormals" (formerly known as "denormals")
+floating point anumbers are now supported both with the plain IEEE 754
+floating point numbers (64-bit or 128-bit) and the x86 80-bit
+"extended precision". Note that subnormal hexadecimal floating
+point literals will give a warning about "exponent underflow".
+[perl #128843, #128889, #128890, #128893, #128909, #128919]
-=over 4
+=item *
+
+A regression in 5.24 with C<tr/\N{U+...}/foo/> when the code point was between
+128 and 255 has been fixed. [perl #128734].
=item *
-XXX Add anything here that we forgot to add, or were mistaken about, in
-the perldelta of a previous release.
+A regression from the previous development release, 5.23.3, where
+compiling a regular expression could crash the interpreter has been
+fixed. [perl #128686].
=item *
-Parsing bad POSIX charclasses no longer leaks memory. [perl #128313]
+Use of a string delimiter whose code point is above 2**31 now works
+correctly on platforms that allow this. Previously, certain characters,
+due to truncation, would be confused with other delimiter characters
+with special meaning (such as C<?> in C<m?...?>), resulting
+in inconsistent behaviour. Note that this is non-portable,
+and is based on Perl's extension to UTF-8, and is probably not
+displayable nor enterable by any editor. [perl #128738]
=item *
-Fixed issues with recursive regexes. The behavior was broken in 5.24.0.
-[perl #126182]
+C<@{x> followed by a newline where C<x> represents a control or non-ASCII
+character no longer produces a garbled syntax error message or a crash.
+[perl #128951]
=back
-=head1 Obituary
+=head1 Acknowledgements
-XXX If any significant core contributor has died, we've added a short obituary
-here.
+Perl 5.25.4 represents approximately 4 weeks of development since Perl 5.25.3
+and contains approximately 18,000 lines of changes across 820 files from 23
+authors.
-=head1 Acknowledgements
+Excluding auto-generated files, documentation and release tools, there were
+approximately 9,200 lines of changes to 660 .pm, .t, .c and .h files.
+
+Perl continues to flourish into its third decade thanks to a vibrant community
+of users and developers. The following people are known to have contributed the
+improvements that became Perl 5.25.4:
+
+Chris 'BinGOs' Williams, Craig A. Berry, Dagfinn Ilmari Mannsåker, Dan
+Collins, Daniel Dragan, David Mitchell, Father Chrysostomos, H.Merijn Brand,
+James E Keenan, Jarkko Hietaniemi, Karen Etheridge, Karl Williamson, Lukas Mai,
+Neil Bowers, Nicolas R., Pino Toscano, Rafael Garcia-Suarez, Richard Levitte,
+Shlomi Fish, Smylers, Steve Hay, Tony Cook, Yves Orton.
+
+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 Generate this with:
+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.
- perl Porting/acknowledgements.pl v5.25.2..HEAD
+For a more complete list of all of Perl's historical contributors, please see
+the F<AUTHORS> file in the Perl source distribution.
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff