3 perldelta - what is new for perl v5.11.4
7 This document describes differences between the 5.11.3 release and
10 If you are upgrading from an earlier release such as 5.11.2, first read
11 L<perl5113delta>, which describes differences between 5.11.2 and
16 XXX Any important notices here
18 =head1 Incompatible Changes
20 XXX For a release on a stable branch, this section aspires to be:
22 There are no changes intentionally incompatible with 5.XXX.XXX. If any
23 exist, they are bugs and reports are welcome.
26 =head1 Core Enhancements
28 XXX New core language features go here. Summarise user-visible core language
29 enhancements. Particularly prominent performance optimisations could go
30 here, but most should go in the L</Performance Enhancements> section.
34 XXX List any platforms that this version of perl compiles on, that previous
35 versions did not. These will either be enabled by new files in the F<hints/>
36 directories, or new subdirectories and F<README> files at the top level of the
39 =head1 Modules and Pragmata
41 XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/>
42 go here. If Module::CoreList is updated, generate an initial draft of the
43 following sections using F<Porting/corelist-perldelta.pl>, which prints stub
44 entries to STDOUT. Results can be pasted in place of the '=head2' entries
45 below. A paragraph summary for important changes should then be added by hand.
46 In an ideal world, dual-life modules would have a F<Changes> file that could be
49 =head2 New Modules and Pragmata
51 =head2 Pragmata Changes
53 =head2 Updated Modules
55 =head2 Removed Modules and Pragmata
57 =head1 Utility Changes
59 XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go
60 here. Most of these are built within the directories F<utils> and F<x2p>.
70 =head1 New Documentation
72 XXX Changes which create B<new> files in F<pod/> go here.
82 =head1 Changes to Existing Documentation
84 XXX Changes which significantly change existing files in F<pod/> go here.
85 Any changes to F<pod/perldiag.pod> should go in L</New or Changed Diagnostics>.
88 =head1 Performance Enhancements
90 XXX Changes which enhance performance without changing behaviour go here. There
91 may well be none in a stable release.
101 =head1 Installation and Configuration Improvements
103 XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools
106 =head2 Configuration improvements
110 =head2 Compilation improvements
114 =head2 Platform Specific Changes
118 =item XXX-some-platform
124 =head1 Selected Bug Fixes
126 XXX Important bug fixes in the core language are summarised here.
127 Bug fixes in files in F<ext/> and F<lib/> are best summarised in
128 L</Modules and Pragmata>.
138 =head1 New or Changed Diagnostics
142 =item New warning category C<illegalproto>
146 Illegal character in prototype for %s : %s
147 Prototype after '%c' for %s : %s
149 have been moved from the C<syntax> top-level warnings category into a new
150 first-level category, C<illegalproto>. These two warnings are currently the
151 only ones emitted during parsing of an invalid/illegal prototype, so one
154 no warnings 'illegalproto';
156 to suppress only those, but not other syntax-related warnings. Warnings where
157 prototypes are changed, ignored, or not met are still in the C<prototype>
158 category as before. (Matt S. Trout)
160 =item lvalue attribute ignored after the subroutine has been defined
162 This new warning is issued when one attempts to mark a subroutine as
163 lvalue after it has been defined.
167 =head1 Changed Internals
169 XXX Changes which affect the interface available to C<XS> code go here.
181 XXX Changes which create B<new> files in F<t/> go here. Changes to
182 existing files in F<t/> aren't worth summarising, although the bugs that
183 they represent may be.
193 =head1 Known Problems
195 XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any
196 tests that had to be C<TODO>ed for the release would be noted here, unless
197 they were specific to a particular platform (see below).
199 This is a list of some significant unfixed bugs, which are regressions
200 from either 5.XXX.XXX or 5.XXX.XXX.
212 The following items are now deprecated.
216 =item C<< UNIVERSAL-E<gt>import() >>
218 The method C<< UNIVERSAL-E<gt>import() >> is now deprecated.
219 Attempting to pass import arguments to a C<use UNIVERSAL>
220 statement will result in a deprecation warning. (This is
221 a less noisy version of the full deprecation warning
226 =head1 Platform Specific Notes
228 XXX Any changes specific to a particular platform. VMS and Win32 are the usual
229 stars here. It's probably best to group changes under the same section layout
230 as the main perldelta
234 XXX If any significant core contributor has died, we've added a short obituary
237 =head1 Acknowledgements
239 XXX The list of people to thank goes here.
242 =head1 Reporting Bugs
244 If you find what you think is a bug, you might check the articles
245 recently posted to the comp.lang.perl.misc newsgroup and the perl
246 bug database at http://rt.perl.org/perlbug/ . There may also be
247 information at http://www.perl.org/ , the Perl Home Page.
249 If you believe you have an unreported bug, please run the B<perlbug>
250 program included with your release. Be sure to trim your bug down
251 to a tiny but sufficient test case. Your bug report, along with the
252 output of C<perl -V>, will be sent off to perlbug@perl.org to be
253 analysed by the Perl porting team.
255 If the bug you are reporting has security implications, which make it
256 inappropriate to send to a publicly archived mailing list, then please send
257 it to perl5-security-report@perl.org. This points to a closed subscription
258 unarchived mailing list, which includes all the core committers, who be able
259 to help assess the impact of issues, figure out a resolution, and help
260 co-ordinate the release of patches to mitigate or fix the problem across all
261 platforms on which Perl is supported. Please only use this address for
262 security issues in the Perl core, not for modules independently
267 The F<Changes> file for an explanation of how to view exhaustive details
270 The F<INSTALL> file for how to build Perl.
272 The F<README> file for general stuff.
274 The F<Artistic> and F<Copying> files for copyright information.