| =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 perlbug@perl.org 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 perl5-security-report@perl.org. 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 |