Spaces:
Running
Running
| =encoding utf8 | |
| =head1 NAME | |
| perl5161delta - what is new for perl v5.16.1 | |
| =head1 DESCRIPTION | |
| This document describes differences between the 5.16.0 release and | |
| the 5.16.1 release. | |
| If you are upgrading from an earlier release such as 5.14.0, first read | |
| L<perl5160delta>, which describes differences between 5.14.0 and | |
| 5.16.0. | |
| =head1 Security | |
| =head2 an off-by-two error in Scalar-List-Util has been fixed | |
| The bugfix was in Scalar-List-Util 1.23_04, and perl 5.16.1 includes | |
| Scalar-List-Util 1.25. | |
| =head1 Incompatible Changes | |
| There are no changes intentionally incompatible with 5.16.0 If any | |
| exist, they are bugs, and we request that you submit a report. See | |
| L</Reporting Bugs> below. | |
| =head1 Modules and Pragmata | |
| =head2 Updated Modules and Pragmata | |
| =over 4 | |
| =item * | |
| L<Scalar::Util> and L<List::Util> have been upgraded from version 1.23 to | |
| version 1.25. | |
| =item * | |
| L<B::Deparse> has been updated from version 1.14 to 1.14_01. An | |
| "uninitialized" warning emitted by B::Deparse has been squashed | |
| [perl #113464]. | |
| =back | |
| =head1 Configuration and Compilation | |
| =over | |
| =item * | |
| Building perl with some Windows compilers used to fail due to a problem | |
| with miniperl's C<glob> operator (which uses the C<perlglob> program) | |
| deleting the PATH environment variable [perl #113798]. | |
| =back | |
| =head1 Platform Support | |
| =head2 Platform-Specific Notes | |
| =over 4 | |
| =item VMS | |
| All C header files from the top-level directory of the distribution are now | |
| installed on VMS, providing consistency with a long-standing practice on other | |
| platforms. Previously only a subset were installed, which broke non-core extension | |
| builds for extensions that depended on the missing include files. | |
| =back | |
| =head1 Selected Bug Fixes | |
| =over 4 | |
| =item * | |
| A regression introduced in Perl v5.16.0 involving | |
| C<tr/I<SEARCHLIST>/I<REPLACEMENTLIST>/> has been fixed. Only the first | |
| instance is supposed to be meaningful if a character appears more than | |
| once in C<I<SEARCHLIST>>. Under some circumstances, the final instance | |
| was overriding all earlier ones. [perl #113584] | |
| =item * | |
| C<B::COP::stashlen> has been added. This provides access to an internal | |
| field added in perl 5.16 under threaded builds. It was broken at the last | |
| minute before 5.16 was released [perl #113034]. | |
| =item * | |
| The L<re> pragma will no longer clobber C<$_>. [perl #113750] | |
| =item * | |
| Unicode 6.1 published an incorrect alias for one of the | |
| Canonical_Combining_Class property's values (which range between 0 and | |
| 254). The alias C<CCC133> should have been C<CCC132>. Perl now | |
| overrides the data file furnished by Unicode to give the correct value. | |
| =item * | |
| Duplicating scalar filehandles works again. [perl #113764] | |
| =item * | |
| Under threaded perls, a runtime code block in a regular expression could | |
| corrupt the package name stored in the op tree, resulting in bad reads | |
| in C<caller>, and possibly crashes [perl #113060]. | |
| =item * | |
| For efficiency's sake, many operators and built-in functions return the | |
| same scalar each time. Lvalue subroutines and subroutines in the CORE:: | |
| namespace were allowing this implementation detail to leak through. | |
| C<print &CORE::uc("a"), &CORE::uc("b")> used to print "BB". The same thing | |
| would happen with an lvalue subroutine returning the return value of C<uc>. | |
| Now the value is copied in such cases [perl #113044]. | |
| =item * | |
| C<__SUB__> now works in special blocks (C<BEGIN>, C<END>, etc.). | |
| =item * | |
| Formats that reference lexical variables from outside no longer result | |
| in crashes. | |
| =back | |
| =head1 Known Problems | |
| There are no new known problems, but consult L<perl5160delta/Known | |
| Problems> to see those identified in the 5.16.0 release. | |
| =head1 Acknowledgements | |
| Perl 5.16.1 represents approximately 2 months of development since Perl | |
| 5.16.0 and contains approximately 14,000 lines of changes across 96 | |
| files from 8 authors. | |
| 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 5.16.1: | |
| Chris 'BinGOs' Williams, Craig A. Berry, Father Chrysostomos, Karl | |
| Williamson, Paul Johnson, Reini Urban, Ricardo Signes, Tony Cook. | |
| 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. | |
| 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. | |
| 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 | |
| If you find what you think is a bug, you might check the articles | |
| recently posted to the comp.lang.perl.misc newsgroup and the perl | |
| bug database at http://rt.perl.org/perlbug/ . There may also be | |
| information at http://www.perl.org/ , the Perl Home Page. | |
| If you believe you have an unreported bug, please run the L<perlbug> | |
| program included with your release. Be sure to trim your bug down | |
| to a tiny but sufficient test case. Your bug report, along with the | |
| output of C<perl -V>, will be sent off to [email protected] to be | |
| analysed by the Perl porting team. | |
| If the bug you are reporting has security implications, which make it | |
| inappropriate to send to a publicly archived mailing list, then please | |
| send it to [email protected]. This points to a closed | |
| subscription unarchived mailing list, which includes all the core | |
| committers, who will be able to help assess the impact of issues, figure | |
| out a resolution, and help co-ordinate the release of patches to | |
| mitigate or fix the problem across all platforms on which Perl is | |
| supported. Please only use this address for security issues in the Perl | |
| core, not for modules independently distributed on CPAN. | |
| =head1 SEE ALSO | |
| The F<Changes> file for an explanation of how to view exhaustive details | |
| on what changed. | |
| The F<INSTALL> file for how to build Perl. | |
| The F<README> file for general stuff. | |
| The F<Artistic> and F<Copying> files for copyright information. | |
| =cut | |