| perl5203delta - what is new for perl v5.20.3 |
perl5203delta - what is new for perl v5.20.3
This document describes differences between the 5.20.2 release and the 5.20.3 release.
If you are upgrading from an earlier release such as 5.20.1, first read the perl5202delta manpage, which describes differences between 5.20.1 and 5.20.2.
There are no changes intentionally incompatible with 5.20.2. If any exist, they are bugs, and we request that you submit a report. See Reporting Bugs below.
Add -P to the pre-processor command-line on GCC 5. GCC added extra line directives, breaking parsing of error code definitions. [perl #123784]
the Module::CoreList manpage has been upgraded from version 5.20150214 to 5.20150822.Updated to cover the latest releases of Perl.
perl5db.pl has been upgraded from 1.44 to 1.44_01.The debugger would cause an assertion failure. [perl #124127]
study() is currently a no-op.
$Config{cppsymbols}.
[perl #123784]
$1..$n capture vars that
Perl_save_re_context() is hard-coded to localize, because that function has no
efficient way of determining at runtime what vars to localize.
$/>|perlvar/$sol is now preserved
when it is set to an invalid value. Previously if you set $/ to a reference
to an array, for example, perl would produce a runtime error and not set PL_rs,
but Perl code that checked $/ would see the array reference.
[perl #123218]
Perl 5.14.0 introduced a bug whereby eval { LABEL: } would crash. This has
been fixed.
[perl #123652]
Extending an array cloned from a parent thread could result in ``Modification of
a read-only value attempted'' errors when attempting to modify the new elements.
[perl #124127]
Several cases of data used to store environment variable contents in core C
code being potentially overwritten before being used have been fixed.
[perl #123748]
UTF-8 variable names used in array indexes, unquoted UTF-8 HERE-document
terminators and UTF-8 function names all now work correctly.
[perl #124113]
A subtle bug introduced in Perl 5.20.2 involving UTF-8 in regular expressions
and sometimes causing a crash has been fixed. A new test script has been added
to test this fix; see under Testing.
[perl #124109]
Some patterns starting with /.*..../ matched against long strings have been
slow since Perl 5.8, and some of the form /.*..../i have been slow since
Perl 5.18. They are now all fast again.
[perl #123743]
Warning fatality is now ignored when rewinding the stack. This prevents
infinite recursion when the now fatal error also causes rewinding of the stack.
[perl #123398]
setpgrp($nonzero) (with one argument) was accidentally changed in Perl 5.16
to mean setpgrp(0). This has been fixed.
A crash with %::=(); J->${\"::"} has been fixed.
[perl #125541]
Regular expression possessive quantifier Perl 5.20 regression now fixed.
qr/PAT{min,max}+/ is supposed to behave identically to
qr/(?>PAT{min,max})/. Since Perl 5.20, this didn't work
if min and max were equal.
[perl #125825]
Code like /$a[/ used to read the next line of input and treat it as though
it came immediately after the opening bracket. Some invalid code consequently
would parse and run, but some code caused crashes, so this is now disallowed.
[perl #123712]
Perl 5.20.3 represents approximately 7 months of development since Perl 5.20.2 and contains approximately 3,200 lines of changes across 99 files from 26 authors.
Excluding auto-generated files, documentation and release tools, there were approximately 1,500 lines of changes to 43 .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 5.20.3:
Alex Vandiver, Andy Dougherty, Aristotle Pagaltzis, Chris 'BinGOs' Williams, Craig A. Berry, Dagfinn Ilmari Mannsåker, Daniel Dragan, David Mitchell, Father Chrysostomos, H.Merijn Brand, James E Keenan, James McCoy, Jarkko Hietaniemi, Karen Etheridge, Karl Williamson, kmx, Lajos Veres, Lukas Mai, Matthew Horsfall, Petr Písař, Randy Stauner, Ricardo Signes, Sawyer X, 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.
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 AUTHORS file in the Perl source distribution.
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 https://rt.perl.org/ . 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 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 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.
The Changes file for an explanation of how to view exhaustive details on what changed.
The INSTALL file for how to build Perl.
The README file for general stuff.
The Artistic and Copying files for copyright information.
| perl5203delta - what is new for perl v5.20.3 |