perl586delta.pdf

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Perl version 5.10.0 documentation - perl586delta
NAME
perl586delta - what is new for perl v5.8.6
DESCRIPTION
This document describes differences between the 5.8.5 release and the 5.8.6 release.
Incompatible Changes
There are no changes incompatible with 5.8.5.
Core Enhancements
The perl interpreter is now more tolerant of UTF-16-encoded scripts.
On Win32, Perl can now use non-IFS compatible LSPs, which allows Perl to work in conjunction with
firewalls such as McAfee Guardian. For full details see the file
README.win32,
particularly if you're
running Win95.
Modules and Pragmata
With the
base
pragma, an intermediate class with no fields used to messes up private fields in
the base class. This has been fixed.
Cwd upgraded to version 3.01 (as part of the new PathTools distribution)
Devel::PPPort upgraded to version 3.03
File::Spec upgraded to version 3.01 (as part of the new PathTools distribution)
Encode upgraded to version 2.08
ExtUtils::MakeMaker remains at version 6.17, as later stable releases currently available on
CPAN have some issues with core modules on some core platforms.
I18N::LangTags upgraded to version 0.35
Math::BigInt upgraded to version 1.73
Math::BigRat upgraded to version 0.13
MIME::Base64 upgraded to version 3.05
POSIX::sigprocmask function can now retrieve the current signal mask without also setting it.
Time::HiRes upgraded to version 1.65
Utility Changes
Perl has a new -dt command-line flag, which enables threads support in the debugger.
Performance Enhancements
reverse sort ...
is now optimized to sort in reverse, avoiding the generation of a temporary
intermediate list.
for (reverse @foo)
now iterates in reverse, avoiding the generation of a temporary reversed list.
Selected Bug Fixes
The regexp engine is now more robust when given invalid utf8 input, as is sometimes generated by
buggy XS modules.
foreach
on threads::shared array used to be able to crash Perl. This bug has now been fixed.
A regexp in
STDOUT's
destructor used to coredump, because the regexp pad was already freed. This
has been fixed.
http://perldoc.perl.org
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Perl version 5.10.0 documentation - perl586delta
goto &
is now more robust - bugs in deep recursion and chained
goto &
have been fixed.
Using
delete
on an array no longer leaks memory. A
pop
of an item from a shared array reference
no longer causes a leak.
eval_sv()
failing a taint test could corrupt the stack - this has been fixed.
On platforms with 64 bit pointers numeric comparison operators used to erroneously compare the
addresses of references that are overloaded, rather than using the overloaded values. This has been
fixed.
read
into a UTF8-encoded buffer with an offset off the end of the buffer no longer mis-calculates
buffer lengths.
Although Perl has promised since version 5.8 that
sort()
would be stable, the two cases
sort {$b
cmp $a}
and
sort {$b <=> $a}
could produce non-stable sorts. This is corrected in perl5.8.6.
Localising
$^D
no longer generates a diagnostic message about valid -D flags.
New or Changed Diagnostics
For -t and -T, Too late for "-T" option has been changed to the more informative "-T" is on the #! line,
it must also be used on the command line
Changed Internals
From now on all applications embedding perl will behave as if perl were compiled with
-DPERL_USE_SAFE_PUTENV. See "Environment access" in the
INSTALL
file for details.
Most
C
source files now have comments at the top explaining their purpose, which should help
anyone wishing to get an overview of the implementation.
New Tests
There are significantly more tests for the
B
suite of modules.
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://bugs.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.
You can browse and search the Perl 5 bugs at http://bugs.perl.org/
SEE ALSO
The
Changes
file for 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.
http://perldoc.perl.org
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