- Incompatible Changes
- Core Enhancements
- Modules and Pragmata
- Utility Changes
- Performance Enhancements
- Selected Bug Fixes
- New or Changed Diagnostics
- Changed Internals
- New Tests
- Reporting Bugs
- SEE ALSO
perl586delta - what is new for perl v5.8.6
This document describes differences between the 5.8.5 release and the 5.8.6 release.
There are no changes incompatible with 5.8.5.
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
basepragma, 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
Perl has a new -dt command-line flag, which enables threads support in the debugger.
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.
on threads::shared array used to be able to crash Perl. This bug
has now been fixed.
A regexp in
's destructor used to coredump, because the regexp pad
was already freed. This has been fixed.
failing a taint test could corrupt the stack - this has been
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.
no longer generates a diagnostic message about valid -D
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
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.
source files now have comments at the top explaining their purpose,
which should help anyone wishing to get an overview of the implementation.
There are significantly more tests for the
suite of modules.
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
, will be sent off to firstname.lastname@example.org to be
analysed by the Perl porting team. You can browse and search
the Perl 5 bugs at http://bugs.perl.org/
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.