3 perl586delta - what is new for perl v5.8.6
7 This document describes differences between the 5.8.5 release and
10 =head1 Incompatible Changes
12 There are no changes incompatible with 5.8.5.
14 =head1 Core Enhancements
16 The perl interpreter is now more tolerant of UTF-16-encoded scripts.
18 On Win32, Perl can now use non-IFS compatible LSPs, which allows Perl to
19 work in conjunction with firewalls such as McAfee Guardian. For full details
20 see the file F<README.win32>, particularly if you're running Win95.
22 =head1 Modules and Pragmata
28 With the C<base> pragma, an intermediate class with no fields used to messes
29 up private fields in the base class. This has been fixed.
33 Cwd upgraded to version 3.01 (as part of the new PathTools distribution)
37 Devel::PPPort upgraded to version 3.03
41 File::Spec upgraded to version 3.01 (as part of the new PathTools distribution)
45 Encode upgraded to version 2.08
49 ExtUtils::MakeMaker remains at version 6.17, as later stable releases currently
50 available on CPAN have some issues with core modules on some core platforms.
54 I18N::LangTags upgraded to version 0.35
58 Math::BigInt upgraded to version 1.73
62 Math::BigRat upgraded to version 0.13
66 MIME::Base64 upgraded to version 3.05
70 POSIX::sigprocmask function can now retrieve the current signal mask without
75 Time::HiRes upgraded to version 1.65
79 =head1 Utility Changes
81 Perl has a new -dt command-line flag, which enables threads support in the
84 =head1 Performance Enhancements
86 C<reverse sort ...> is now optimized to sort in reverse, avoiding the
87 generation of a temporary intermediate list.
89 C<for (reverse @foo)> now iterates in reverse, avoiding the generation of a
90 temporary reversed list.
92 =head1 Selected Bug Fixes
94 The regexp engine is now more robust when given invalid utf8 input, as is
95 sometimes generated by buggy XS modules.
97 C<foreach> on threads::shared array used to be able to crash Perl. This bug
100 A regexp in C<STDOUT>'s destructor used to coredump, because the regexp pad
101 was already freed. This has been fixed.
103 C<goto &> is now more robust - bugs in deep recursion and chained C<goto &>
106 Using C<delete> on an array no longer leaks memory. A C<pop> of an item from a
107 shared array reference no longer causes a leak.
109 C<eval_sv()> failing a taint test could corrupt the stack - this has been
112 On platforms with 64 bit pointers numeric comparison operators used to
113 erroneously compare the addresses of references that are overloaded, rather
114 than using the overloaded values. This has been fixed.
116 C<read> into a UTF8-encoded buffer with an offset off the end of the buffer
117 no longer mis-calculates buffer lengths.
119 Although Perl has promised since version 5.8 that C<sort()> would be
120 stable, the two cases C<sort {$b cmp $a}> and C<< sort {$b <=> $a} >> could
121 produce non-stable sorts. This is corrected in perl5.8.6.
123 Localising C<$^D> no longer generates a diagnostic message about valid -D
126 =head1 New or Changed Diagnostics
129 Too late for "-T" option
130 has been changed to the more informative
131 "-T" is on the #! line, it must also be used on the command line
133 =head1 Changed Internals
135 From now on all applications embedding perl will behave as if perl
136 were compiled with -DPERL_USE_SAFE_PUTENV. See "Environment access" in
137 the F<INSTALL> file for details.
139 Most C<C> source files now have comments at the top explaining their purpose,
140 which should help anyone wishing to get an overview of the implementation.
144 There are significantly more tests for the C<B> suite of modules.
146 =head1 Reporting Bugs
148 If you find what you think is a bug, you might check the articles
149 recently posted to the comp.lang.perl.misc newsgroup and the perl
150 bug database at http://bugs.perl.org. There may also be
151 information at http://www.perl.org, the Perl Home Page.
153 If you believe you have an unreported bug, please run the B<perlbug>
154 program included with your release. Be sure to trim your bug down
155 to a tiny but sufficient test case. Your bug report, along with the
156 output of C<perl -V>, will be sent off to perlbug@perl.org to be
157 analysed by the Perl porting team. You can browse and search
158 the Perl 5 bugs at http://bugs.perl.org/
162 The F<Changes> file for exhaustive details on what changed.
164 The F<INSTALL> file for how to build Perl.
166 The F<README> file for general stuff.
168 The F<Artistic> and F<Copying> files for copyright information.