=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 v5.21.3
=head1 DESCRIPTION
If you are upgrading from an earlier release such as 5.21.1, first read
L<perl5212delta>, which describes differences between 5.21.1 and 5.21.2.
-=head1 Notice
+=head1 Core Enhancements
-XXX Any important notices here
+=head2 C<defined(@array = LIST)> is no longer fatal
-=head1 Core Enhancements
+In 5.21.1, C<defined(@array)> was made fatal. This has been relaxed
+to not die if the argument is assigning to an array.
-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.
+=head2 Floating point handling and parsing has been improved
-[ List each enhancement as a =head2 entry ]
+A number of area in the core that handle the parsing and printing
+of floating point values have been improved.
=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.
+=head2 The L<Safe> module could allow outside packages to be replaced
-[ List each security issue as a =head2 entry ]
+Critical bugfix: outside packages could be replaced. L<Safe> has
+been patched to 2.38 to address this.
=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 ]
-
=head2 S<C<use UNIVERSAL '...'>> is now a fatal error
Importing functions from C<UNIVERSAL> has been deprecated since v5.12, and
is now a fatal error. S<C<"use UNIVERSAL">> without any arguments is still
allowed.
-=head1 Deprecations
+=head1 Modules and Pragmata
-XXX Any deprecated features, syntax, modules etc. should be listed here.
+=head2 Updated Modules and Pragmata
-=head2 Module removals
+=over 4
-XXX Remove this section if inapplicable.
+=item *
-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.
+L<B::Debug> has been upgraded from version 1.19 to 1.21.
-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.
+=item *
-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.
+L<Config::Perl::V> has been upgraded from version 0.20 to 0.22.
-=over
+=item *
-=item XXX
+L<CPAN::Meta> has been upgraded from version 2.141520 to 2.142060.
-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.
+=item *
-=back
+L<CPAN::Meta::Requirements> has been upgraded from version 2.125 to 2.126.
+
+=item *
-[ List each other deprecation as a =head2 entry ]
+L<ExtUtils::Manifest> has been upgraded from version 1.64 to 1.65.
-=head1 Performance Enhancements
+=item *
-XXX Changes which enhance performance without changing behaviour go here.
-There may well be none in a stable release.
+L<HTTP::Tiny> has been upgraded from version 0.043 to 0.047.
-[ List each enhancement as a =item entry ]
+=item *
-=over 4
+L<perl5db.pl> has been upgraded from version 1.45 to 1.46.
=item *
-XXX
+L<POSIX> has been upgraded from version 1.41 to 1.42.
-=back
+=item *
-=head1 Modules and Pragmata
+L<Safe> has been upgraded from version 2.37 to 2.38.
-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<Socket> has been upgraded from version 2.014 to 2.015.
-=head2 New Modules and Pragmata
+=back
+
+=head1 Documentation
+
+=head2 Changes to Existing Documentation
+
+=head3 L<perlexperiment>
=over 4
=item *
-XXX
+Added reference to L<feature>.
=back
-=head2 Updated Modules and Pragmata
+=head3 L<perlguts>
=over 4
=item *
-L<XXX> has been upgraded from version A.xx to B.yy.
+Details on C level symbols and libperl.t added.
=back
-=head2 Removed Modules and Pragmata
+=head3 L<perlhacktips>
=over 4
=item *
-XXX
+Recommended replacements for tmpfile, atoi, strtol, and strtoul added.
=back
-=head1 Documentation
+=head3 L<perlop>
-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>.
+=over 4
+
+=item *
-=head2 New Documentation
+ASCII v. EBCDIC clarifications added.
-XXX Changes which create B<new> files in F<pod/> go here.
+=back
-=head3 L<XXX>
+=head3 L<perlsec>
-XXX Description of the purpose of the new file here
+=over 4
-=head2 Changes to Existing Documentation
+=item *
+
+Comments added on algorithmic complexity and tied hashes.
-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.
+=back
-=head3 L<XXX>
+=head3 L<perlvms>
=over 4
=item *
-XXX Description of the change here
+Updated documentation on environment and shell interaction in VMS.
=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 *
-XXX L<message|perldiag/"message">
-
-=back
-
-=head3 New Warnings
+L<Hexadecimal float: internal error|perldiag/"Hexadecimal float: internal error">
-=over 4
+(F) Something went horribly bad in hexadecimal float handling.
=item *
-XXX L<message|perldiag/"message">
+L<Hexadecimal float: unsupported long double format|perldiag/"Hexadecimal float: unsupported long double format">
-=back
+(F) You have configured Perl to use long doubles but
+the internals of the long double format are unknown,
+therefore the hexadecimal float output is impossible.
-=head2 Changes to Existing Diagnostics
+=back
-XXX Changes (i.e. rewording) of diagnostic messages go here
+=head3 New Warnings
=over 4
=item *
-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>.
+L<Hexadecimal float: exponent overflow|perldiag/"Hexadecimal float: exponent overflow">
-[ 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
+(W overflow) The hexadecimal floating point has larger exponent
+than the floating point supports.
=item *
-XXX
+L<Hexadecimal float: exponent underflow|perldiag/"Hexadecimal float: exponent underflow">
-=back
-
-=head1 Configuration and Compilation
+(W overflow) The hexadecimal floating point has smaller exponent
+than the floating point supports.
-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 ].
+L<Hexadecimal float: mantissa overflow|perldiag/"Hexadecimal float: mantissa overflow">
-=over 4
+(W overflow) The hexadecimal floating point literal had more bits in
+the mantissa (the part between the 0x and the exponent, also known as
+the fraction or the significand) than the floating point supports.
=item *
-XXX
-
-=back
+L<Hexadecimal float: precision loss|perldiag/"Hexadecimal float: precision loss">
-=head1 Testing
+(W overflow) The hexadecimal floating point had internally more
+digits than could be output. This can be caused by unsupported
+long double formats, or by 64-bit integers not being available
+(needed to retrieve the digits under some configurations).
-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.
+=back
-[ List each test improvement as a =item entry ]
+=head2 Changes to Existing Diagnostics
=over 4
=item *
-XXX
+C<require> with no argument or undef used to warn about a Null filename; now
+it dies with C<Missing or undefined argument to require>.
=back
-=head1 Platform Support
-
-XXX Any changes to platform support should be listed in the sections below.
-
-[ Within the sections, list each platform as a =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.
+=head1 Configuration and Compilation
=over 4
-=item XXX-some-platform
+=item *
-XXX
+MurmurHash64A and MurmurHash64B can now be configured as the internal hash
+function.
=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 Android
-XXX
+Build support has been improved for cross-compiling in general and for
+Android in particular.
-=back
+=item Solaris
-=head2 Platform-Specific Notes
+C<c99> options have been cleaned up, hints look for C<solstudio>
+as well as C<SUNWspro>, and support for native C<setenv> has been added.
-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.
+=item VMS
-=over 4
+C<finite>, C<finitel>, and C<isfinite> detection has been added to
+C<configure.com>, environment handling has had some minor changes, and
+a fix for legacy feature checking status.
-=item XXX-some-platform
+=item Windows
-XXX
+C<%I64d> is now being used instead of C<%lld> for MinGW.
=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.
+=over 4
-[ List each change as a =item entry ]
+=item *
-=over 4
+Added L<perlapi/sync_locale>.
+Changing the program's locale should be avoided by XS code. Nevertheless,
+certain non-Perl libraries called from XS, such as C<Gtk> do so. When this
+happens, Perl needs to be told that the locale has changed. Use this function
+to do so, before returning to Perl.
=item *
-XXX
+Added L<perlapi/grok_atou> as a safer replacement for atoi and strtol.
=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 a =item entry ]
-
=over 4
=item *
-XXX
-
-=back
-
-=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 a =item entry ]
-
-=over 4
+Failing to compile C<use Foo> in an eval could leave a spurious
+C<BEGIN> subroutine definition, which would produce a "Subroutine
+BEGIN redefined" warning on the next use of C<use>, or other C<BEGIN>
+block. [perl #122107]
=item *
-XXX
+C<method { BLOCK } ARGS> syntax now correctly parses the arguments if they
+begin with an opening brace. [perl #46947]
-=back
-
-=head1 Errata From Previous Releases
+=item *
-=over 4
+External libraries and Perl may have different ideas of what the locale is.
+This is problematic when parsing version strings if the locale's numeric
+separator has been changed. Version parsing has been patched to ensure
+it handles the locales correctly. [perl #121930]
=item *
-XXX Add anything here that we forgot to add, or were mistaken about, in
-the perldelta of a previous release.
+A bug has been fixed where zero-length assertions and code blocks inside of a
+regex could cause C<pos> to see an incorrect value. [perl #122460]
=back
-=head1 Obituary
-
-XXX If any significant core contributor has died, we've added a short obituary
-here.
-
=head1 Acknowledgements
XXX Generate this with:
https://perl5.git.perl.org / perl5.git / blobdiff