perl5115delta
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名前
perl5115delta - what is new for perl v5.11.5
形式
Please see following description for synopsis
説明
Perl Programmers Reference Guide PERL5115DELTA(1)
NAME
perl5115delta - what is new for perl v5.11.5
DESCRIPTION
This document describes differences between the 5.11.4
release and the 5.11.5 release.
If you are upgrading from an earlier release such as 5.11.3,
first read perl5114delta, which describes differences
between 5.11.3 and 5.11.4.
Core Enhancements
32-bit limit on substr arguments removed
The 32-bit limit on "substr" arguments has now been removed.
The full range of the system's signed and unsigned integers
is now available for the "pos" and "len" arguments.
Modules and Pragmata
Pragmata Changes
"version"
Upgraded from version 0.81 to 0.82.
The "is_lax" and "is_strict" functions can now be
optionally exported to the caller's namespace and are
also now documented.
Undefined version objects are now uninitialized with
zero rather than "undef".
Updated Modules
"B::Debug"
Upgraded from version 1.11 to 1.12.
"CPAN"
Upgraded from version 1.94_53 to 1.94_56.
This resolves RT #72362, in which CPAN was ignoring
"configure_requires", and RT #72348, in which the
command "o conf init" in the CPAN shell could cause an
exception to be thrown.
This module is also now built in a less specialized way,
which resolves a problem that caused "make" after "make
clean" to fail, fixing RT #72218.
"CPANPLUS::Dist::Build"
Upgraded from version 0.44 to 0.46.
This makes the prereq resolving fall back to _build/
querying if the "prereq_data" action fails.
"Pod::Perldoc"
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Upgraded from version 3.15_01 to 3.15_02.
"Pod::Plainer"
Upgraded from version 1.01 to 1.02.
"Safe"
Upgraded from version 2.21 to 2.22.
This resolves RT #72700, in which an exception thrown
from a closure was getting lost.
"Socket"
Upgraded from version 1.85 to 1.86.
This makes the new Socket implementation of "inet_pton"
consistent with the existing Socket6 implementation of
"inet_pton", fixing RT #72884.
"podlators"
Upgraded from version 2.2.2 to 2.3.1.
Changes to Existing Documentation
The syntax "unless (EXPR) BLOCK else BLOCK" is now
documented as valid, as is the syntax "unless (EXPR) BLOCK
elsif (EXPR) BLOCK ... else BLOCK", although actually using
the latter may not be the best idea for the readability of
your source code.
Installation and Configuration Improvements
Configuration improvements
Support for SystemTap's "dtrace" compatibility layer has
been added and an issue with linking "miniperl" has been
fixed in the process.
"less -R" is now used instead of "less" for "groff"'s new
usage of ANSI escape codes by setting $Config{less} (and
thereby $Config{pager}, which fixes RT #72156.
USE_PERL_ATOF is now reported in the compile-time options
listed by the "-V" switch.
Selected Bug Fixes
o Arbitrary whitespace is now allowed between "NAME" and
"VERSION" in "package NAME VERSION;" statements. (Fixes
RT #72432)
o A panic caused by trying to load "charnames" when the
parser is already in error (e.g. by a missing "my" under
"use strict;") is now averted. This was a regression
since Perl 5.10.0. (Fixes RT #72590)
o Reading $! no longer causes a SEGV for out of range
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"errno" values. (Fixes RT #72850)
o A possible SEGV in "/\N{...}/" has been fixed. This was
a regression since Perl 5.10.
o A possible SEGV when freeing a scalar that was upgraded
to an "SVt_REGEXP" type from a simple(r) scalar has been
fixed.
o A type conversion bug in "gmtime64" that caused it to
break around "2**48" has been fixed.
o Interpolating a regex that makes use of the "charnames"
pragma will no longer cause a run-time error. (Fixes RT
#56444)
o Array references assigned to *Foo::ISA now have the
necessary magic added to them to catch any further
updates to the new @ISA. (Fixes RT #72866)
o Filehandles are now always blessed into "IO::File",
which, together with some suitable manipulation of
@IO::File::ISA, fixes a breakage introduced in Perl
5.11.3 by a change that always blessed filehandles into
"IO::Handle" rather than checking for "FileHandle"
first.
o A change in the behaviour of "warnings::enabled" and
"warnings::warnif" in Perl 5.10.0 that wasn't documented
at the time is now documented in perl5100delta. (Fixes
RT #62522)
o RT #71504 is now fixed by simply skipping the tests that
failed on OpenBSD with ithreads and perlio.
New or Changed Diagnostics
o The fatal error "Malformed UTF-8 returned by \N" is now
produced if the "charnames" handler returns malformed
UTF-8.
o If an unresolved named character or sequence was
encountered when compiling a regex pattern then the
fatal error "\\N{NAME} must be resolved by the lexer" is
now produced. This can happen, for example, when using a
single-quotish context like "$re = '\N{SPACE}'; $re;".
See perldiag for more examples of how the lexer can get
bypassed.
o The fatal error "Invalid hexadecimal number in
\\N{U+...}" will be produced if the character constant
represented by "..." is not a valid hexadecimal number.
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o The new meaning of "\N" as "[^\n]" is not valid in a
bracketed character class, just like "." in a character
class loses its special meaning, and will cause the
fatal error "\\N in a character class must be a named
character: \\N{...}".
o The rules on what is legal for the "..." in "\N{...}"
have been tightened up so that unless the "..." begins
with an alphabetic character and continues with a
combination of alphanumerics, dashes, spaces,
parentheses or colons then the warning "Deprecated
character(s) in \\N{...} starting at '%s'" is now
issued.
o The warning "Using just the first characters returned by
\N{}" will be issued if the "charnames" handler returns
a sequence of characters which exceeds the limit of the
number of characters that can be used. The message will
indicate which characters were used and which were
discarded.
o Currently, all but the first of the several characters
that the "charnames" handler may return are discarded
when used in a regular expression pattern bracketed
character class. If this happens then the warning "Using
just the first character returned by \N{} in character
class" will be issued.
o The warning "Missing right brace on \\N{} or unescaped
left brace after \\N. Assuming the latter" will be
issued if Perl encounters a "\N{" but doesn't find a
matching "}". In this case Perl doesn't know if it was
mistakenly omitted, or if "match non-newline" followed
by "match a "{"" was desired. It assumes the latter
because that is actually a valid interpretation as
written, unlike the other case. If you meant the
former, you need to add the matching right brace. If
you did mean the latter, you can silence this warning by
writing instead "\N\{".
o "gmtime" and "localtime" called with numbers smaller
than they can reliably handle will now issue the
warnings "gmtime(%.0f) too small" and "localtime(%.0f)
too small".
New Tests
t/op/filehandle.t
Tests some suitably portable filetest operators to check
that they work as expected, particularly in the light of
some internal changes made in how filehandles are
blessed.
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t/op/time_loop.t
Tests that times greater than "2**63", which can now be
handed to "gmtime" and "localtime", do not cause an
internal overflow or an excessively long loop.
Known Problems
Perl 5.11.5 is a development release leading up to Perl
5.12.0. Some notable known problems found in 5.11.5 are
listed as dependencies of RT #69710, the Perl 5 version 12
meta-ticket.
Acknowledgements
Perl 5.11.5 represents approximately one month of
development since Perl 5.11.4 and contains 9618 lines of
changes across 151 files from 33 authors and committers:
var Arnfjoer` Bjarmason, Abigail, brian d foy, Chris
Williams, David Golden, David Mitchell, Eric Brine, Frank
Wiegand, Gisle Aas, H.Merijn Brand, Jan Dubois, Jesse
Vincent, Jim Cromie, John Peacock, Josh ben Jore, Karl
Williamson, Marcus Holland-Moritz, Michael G Schwern,
Nicholas Clark, Offer Kaye, Philippe Bruhat (BooK), Rafael
Garcia-Suarez, Reini Urban, Ricardo Signes, Robin Barker,
Slaven Rezic, Steffen Mueller, Steve Hay, Steve Peters, Tim
Bunce, Todd Rinaldo, Tony Cook and Vincent Pit.
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.
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 analyzed 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
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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
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/.
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