perl5122delta
(1)
Name
perl5122delta - what is new for perl v5.12.2
Synopsis
Please see following description for synopsis
Description
Perl Programmers Reference Guide PERL5122DELTA(1)
NAME
perl5122delta - what is new for perl v5.12.2
DESCRIPTION
This document describes differences between the 5.12.1
release and the 5.12.2 release.
If you are upgrading from an earlier major version, such as
5.10.1, first read perl5120delta, which describes
differences between 5.10.1 and 5.12.0, as well as
perl5121delta, which describes earlier changes in the 5.12
stable release series.
Incompatible Changes
There are no changes intentionally incompatible with 5.12.1.
If any exist, they are bugs and reports are welcome.
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
New Modules and Pragmata
This release does not introduce any new modules or pragmata.
Pragmata Changes
In the previous release, "no VERSION;" statements triggered
a bug which could cause feature bundles to be loaded and
strict mode to be enabled unintentionally.
Updated Modules
"Carp"
Upgraded from version 1.16 to 1.17.
Carp now detects incomplete caller() overrides and
avoids using bogus @DB::args. To provide backtraces,
Carp relies on particular behaviour of the caller built-
in. Carp now detects if other code has overridden this
with an incomplete implementation, and modifies its
backtrace accordingly. Previously incomplete overrides
would cause incorrect values in backtraces (best case),
or obscure fatal errors (worst case)
This fixes certain cases of "Bizarre copy of ARRAY"
caused by modules overriding "caller()" incorrectly.
"CPANPLUS"
A patch to cpanp-run-perl has been backported from
CPANPLUS 0.9004. This resolves [perl #55964]
<http://rt.perl.org/rt3/Ticket/Display.html?id=55964>
and [perl #57106]
<http://rt.perl.org/rt3/Ticket/Display.html?id=57106>,
perl v5.12.5 Last change: 2012-11-03 1
Perl Programmers Reference Guide PERL5122DELTA(1)
both of which related to failures to install
distributions that use "Module::Install::DSL".
"File::Glob"
A regression which caused a failure to find
"CORE::GLOBAL::glob" after loading "File::Glob" to crash
has been fixed. Now, it correctly falls back to
external globbing via "pp_glob".
"File::Copy"
"File::Copy::copy(FILE, DIR)" is now documented.
"File::Spec"
Upgraded from version 3.31 to 3.31_01.
Several portability fixes were made in
"File::Spec::VMS": a colon is now recognized as a
delimiter in native filespecs; caret-escaped delimiters
are recognized for better handling of extended
filespecs; "catpath()" returns an empty directory rather
than the current directory if the input directory name
is empty; "abs2rel()" properly handles Unix-style input.
Utility Changes
o perlbug now always gives the reporter a chance to change
the email address it guesses for them.
o perlbug should no longer warn about uninitialized values
when using the "-d" and "-v" options.
Changes to Existing Documentation
o The existing policy on backward-compatibility and
deprecation has been added to perlpolicy, along with
definitions of terms like deprecation.
o "srand" in perlfunc's usage has been clarified.
o The entry for "die" in perlfunc was reorganized to
emphasize its role in the exception mechanism.
o Perl's INSTALL file has been clarified to explicitly
state that Perl requires a C89 compliant ANSI C
Compiler.
o IO::Socket's "getsockopt()" and "setsockopt()" have been
documented.
o alarm()'s inability to interrupt blocking IO on Windows
has been documented.
o Math::TrulyRandom hasn't been updated since 1996 and has
been removed as a recommended solution for random number
perl v5.12.5 Last change: 2012-11-03 2
Perl Programmers Reference Guide PERL5122DELTA(1)
generation.
o perlrun has been updated to clarify the behaviour of
octal flags to perl.
o To ease user confusion, $# and $*, two special variables
that were removed in earlier versions of Perl have been
documented.
o The version of perlfaq shipped with the Perl core has
been updated from the official FAQ version, which is now
maintained in the "briandfoy/perlfaq" branch of the Perl
repository at <git://perl5.git.perl.org/perl.git>.
Installation and Configuration Improvements
Configuration improvements
o The "d_u32align" configuration probe on ARM has been
fixed.
Compilation improvements
o An ""incompatible operand types"" error in ternary
expressions when building with "clang" has been fixed.
o Perl now skips setuid "File::Copy" tests on partitions
it detects to be mounted as "nosuid".
Selected Bug Fixes
o A possible segfault in the "T_PRTOBJ" default typemap
has been fixed.
o A possible memory leak when using caller() to set
@DB::args has been fixed.
o Several memory leaks when loading XS modules were fixed.
o "unpack()" now handles scalar context correctly for %32H
and %32u, fixing a potential crash. "split()" would
crash because the third item on the stack wasn't the
regular expression it expected. "unpack("%2H", ...)"
would return both the unpacked result and the checksum
on the stack, as would "unpack("%2u", ...)". [perl
#73814]
<http://rt.perl.org/rt3/Ticket/Display.html?id=73814>
o Perl now avoids using memory after calling "free()" in
pp_require when there are CODEREFs in @INC.
o A bug that could cause ""Unknown error"" messages when
""call_sv(code, G_EVAL)"" is called from an XS
destructor has been fixed.
o The implementation of the "open $fh, '>' \$buffer"
perl v5.12.5 Last change: 2012-11-03 3
Perl Programmers Reference Guide PERL5122DELTA(1)
feature now supports get/set magic and thus tied buffers
correctly.
o The "pp_getc", "pp_tell", and "pp_eof" opcodes now make
room on the stack for their return values in cases where
no argument was passed in.
o When matching unicode strings under some conditions
inappropriate backtracking would result in a "Malformed
UTF-8 character (fatal)" error. This should no longer
occur. See [perl #75680]
<http://rt.perl.org/rt3/Public/Bug/Display.html?id=75680>
Platform Specific Notes
AIX
o README.aix has been updated with information about the
XL C/C++ V11 compiler suite.
Windows
o When building Perl with the mingw64 x64 cross-compiler
"incpath", "libpth", "ldflags", "lddlflags" and
"ldflags_nolargefiles" values in Config.pm and
Config_heavy.pl were not previously not being set
correctly because, with that compiler, the include and
lib directories are not immediately below "$(CCHOME)".
VMS
o git_version.h is now installed on VMS. This was an
oversight in v5.12.0 which caused some extensions to
fail to build.
o Several memory leaks in stat() have been fixed.
o A memory leak in "Perl_rename()" due to a double
allocation has been fixed.
o A memory leak in "vms_fid_to_name()" (used by
"realpath()" and "realname()") has been fixed.
Acknowledgements
Perl 5.12.2 represents approximately three months of
development since Perl 5.12.1 and contains approximately
2,000 lines of changes across 100 files from 36 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 5.12.2:
Abigail, var Arnfjoer` Bjarmason, Ben Morrow, brian d foy,
Brian Phillips, Chas. Owens, Chris 'BinGOs' Williams, Chris
Williams, Craig A. Berry, Curtis Jewell, Dan Dascalescu,
perl v5.12.5 Last change: 2012-11-03 4
Perl Programmers Reference Guide PERL5122DELTA(1)
David Golden, David Mitchell, Father Chrysostomos, Florian
Ragwitz, George Greer, H.Merijn Brand, Jan Dubois, Jesse
Vincent, Jim Cromie, Karl Williamson, Lars DXXXXXX XXX, Leon
Brocard, Maik Hentsche, Matt S Trout, Nicholas Clark, Rafael
Garcia-Suarez, Rainer Tammer, Ricardo Signes, Salvador Ortiz
Garcia, Sisyphus, Slaven Rezic, Steffen Mueller, Tony Cook,
Vincent Pit and Yves Orton.
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.
perl v5.12.5 Last change: 2012-11-03 5
Perl Programmers Reference Guide PERL5122DELTA(1)
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
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 6