perl5121delta
(1)
Name
perl5121delta - what is new for perl v5.12.1
Synopsis
Please see following description for synopsis
Description
Perl Programmers Reference Guide PERL5121DELTA(1)
NAME
perldelta - what is new for perl v5.12.1
DESCRIPTION
This document describes differences between the 5.12.0
release and the 5.12.1 release.
If you are upgrading from an earlier release such as 5.10.1,
first read perl5120delta, which describes differences
between 5.10.1 and 5.12.0.
Incompatible Changes
There are no changes intentionally incompatible with 5.12.0.
If any incompatibilities with 5.12.0 exist, they are bugs.
Please report them.
Core Enhancements
Other than the bug fixes listed below, there should be no
user-visible changes to the core language in this release.
Modules and Pragmata
Pragmata Changes
o We fixed exporting of "is_strict" and "is_lax" from
version.
These were being exported with a wrapper that treated
them as method calls, which caused them to fail. They
are just functions, are documented as such, and should
never be subclassed, so this patch just exports them
directly as functions without the wrapper.
Updated Modules
o We upgraded CGI.pm to version 3.49 to incorporate fixes
for regressions introduced in the release we shipped
with Perl 5.12.0.
o We upgraded Pod::Simple to version 3.14 to get an
improvement to \C\<\< \>\> parsing.
o We made a small fix to the CPANPLUS test suite to fix an
occasional spurious test failure.
o We upgraded Safe to version 2.27 to wrap coderefs
retured by "reval()" and "rdo()".
Changes to Existing Documentation
o We added the new maintenance release policy to
perlpolicy.pod
o We've clarified the multiple-angle-bracket construct in
the spec for POD in perlpodspec
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o We added a missing explanation for a warning about ":="
to perldiag.pod
o We removed a false claim in perlunitut that all text
strings are Unicode strings in Perl.
o We updated the Github mirror link in perlrepository to
mirrors/perl, not github/perl
o We fixed a a minor error in perl5114delta.pod.
o We replaced a mention of the now-obsolete Switch.pm with
given/when.
o We improved documentation about
$sitelibexp/sitecustomize.pl in perlrun.
o We corrected perlmodlib.pod which had unintentionally
omitted a number of modules.
o We updated the documentation for 'require' in
perlfunc.pod relating to putting Perl code in @INC.
o We reinstated some erroneously-removed documentation
about quotemeta in perlfunc.
o We fixed an a2p example in perlutil.pod.
o We filled in a blank in perlport.pod with the release
date of Perl 5.12.
o We fixed broken links in a number of perldelta files.
o The documentation for Carp.pm incorrectly stated that
the $Carp::Verbose variable makes cluck generate stack
backtraces.
o We fixed a number of typos in Pod::Functions
o We improved documentation of case-changing functions in
perlfunc.pod
o We corrected perlgpl.pod to contain the correct version
of the GNU General Public License.
Testing
Testing Improvements
o t/op/sselect.t is now less prone to clock jitter during
timing checks on Windows.
sleep() time on Win32 may be rounded down to multiple of
the clock tick interval.
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o lib/blib.t and lib/locale.t: Fixes for test failures on
Darwin/PPC
o perl5db.t: Fix for test failures when
"Term::ReadLine::Gnu" is installed.
Installation and Configuration Improvements
Configuration improvements
o We updated INSTALL with notes about how to deal with
broken dbm.h on OpenSUSE (and possibly other platforms)
Bug Fixes
o A bug in how we process filetest operations could cause
a segfault. Filetests don't always expect an op on the
stack, so we now use TOPs only if we're sure that we're
not stat'ing the _ filehandle. This is indicated by
OPf_KIDS (as checked in ck_ftst).
See also:
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=74542>
o When deparsing a nextstate op that has both a change of
package (relative to the previous nextstate) and a
label, the package declaration is now emitted first,
because it is syntactically impermissible for a label to
prefix a package declaration.
o XSUB.h now correctly redefines fgets under
PERL_IMPLICIT_SYS
See also:
<http://rt.cpan.org/Public/Bug/Display.html?id=55049>
o utf8::is_utf8 now respects GMAGIC (e.g. $1)
o XS code using "fputc()" or "fputs()": on Windows could
cause an error due to their arguments being swapped.
See also:
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=72704>
o We fixed a small bug in lex_stuff_pvn() that caused
spurious syntax errors in an obscure situation. It
happened when stuffing was performed on the last line of
a file and the line ended with a statement that lacked a
terminating semicolon.
See also:
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=74006>
o We fixed a bug that could cause \N{} constructs followed
by a single . to be parsed incorrectly.
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See also:
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=74978>
o We fixed a bug that caused when(scalar) without an
argument not to be treated as a syntax error.
See also:
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=74114>
o We fixed a regression in the handling of labels
immediately before string evals that was introduced in
Perl 5.12.0.
See also:
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=74290>
o We fixed a regression in case-insensitive matching of
folded characters in regular expressions introduced in
Perl 5.12.0.
See also:
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=72998>
Platform Specific Notes
HP-UX
o Perl now allows -Duse64bitint without promoting to
use64bitall on HP-UX
AIX
o Perl now builds on AIX 4.2
The changes required work around AIX 4.2s' lack of
support for IPv6, and limited support for POSIX
"sigaction()".
FreeBSD 7
o FreeBSD 7 no longer contains /usr/bin/objformat. At
build time, Perl now skips the objformat check for
versions 7 and higher and assumes ELF.
VMS
o It's now possible to build extensions on older (pre
7.3-2) VMS systems.
DCL symbol length was limited to 1K up until about seven
years or so ago, but there was no particularly deep
reason to prevent those older systems from configuring
and building Perl.
o We fixed the previously-broken "-Uuseperlio" build on
VMS.
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We were checking a variable that doesn't exist in the
non-default case of disabling perlio. Now we only look
at it when it exists.
o We fixed the -Uuseperlio command-line option in
configure.com.
Formerly it only worked if you went through all the
questions interactively and explicitly answered no.
Known Problems
o "List::Util::first" misbehaves in the presence of a
lexical $_ (typically introduced by "my $_" or
implicitly by "given"). The variable which gets set for
each iteration is the package variable $_, not the
lexical $_.
A similar issue may occur in other modules that provide
functions which take a block as their first argument,
like
foo { ... $_ ...} list
See also:
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=67694>
o "Module::Load::Conditional" and "version" have an
unfortunate interaction which can cause "CPANPLUS" to
crash when it encounters an unparseable version string.
Upgrading to "CPANPLUS" 0.9004 or
"Module::Load::Conditional" 0.38 from CPAN will resolve
this issue.
Acknowledgements
Perl 5.12.1 represents approximately four weeks of
development since Perl 5.12.0 and contains approximately
4,000 lines of changes across 142 files from 28 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 5.12.1:
var Arnfjoer` Bjarmason, Chris Williams, chromatic, Craig A.
Berry, David Golden, Father Chrysostomos, Florian Ragwitz,
Frank Wiegand, Gene Sullivan, Goro Fuji, H.Merijn Brand,
James E Keenan, Jan Dubois, Jesse Vincent, Josh ben Jore,
Karl Williamson, Leon Brocard, Michael Schwern, Nga Tang
Chan, Nicholas Clark, Niko Tyni, Philippe Bruhat, Rafael
Garcia-Suarez, Ricardo Signes, Steffen Mueller, Todd
Rinaldo, Vincent Pit and Zefram.
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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
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 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.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | runtime/perl-512 |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
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.
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
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community source was downloaded from
http://www.cpan.org/src/5.0/perl-5.12.5.tar.bz2
Further information about this software can be found on the
open source community website at http://www.perl.org/.
perl v5.12.5 Last change: 2012-11-03 7