[ this is a template for a new perldelta file. Any text flagged as XXX needs
to be processed before release. ]
-perldelta - what is new for perl v5.23.1
+perldelta - what is new for perl v5.23.3
=head1 DESCRIPTION
-This document describes differences between the 5.23.0 release and the 5.23.1
+This document describes differences between the 5.23.2 release and the 5.23.3
release.
-If you are upgrading from an earlier release such as 5.22.0, first read
-L<perl5230delta>, which describes differences between 5.22.0 and 5.23.0.
+If you are upgrading from an earlier release such as 5.23.1, first read
+L<perl5232delta>, which describes differences between 5.23.1 and 5.23.2.
=head1 Notice
[ List each enhancement as a =head2 entry ]
-=head2 Integer shift (C<< << >> and C<< >> >>) now explicitly defined
+=head2 C<qr/(?[ ])/> now works in UTF-8 locales
-Negative shifts are reverse shifts: left shift becomes right shift,
-and right shift becomes left shift.
-
-Shifting by the number of bits in a native integer (or more) is zero,
-except when the "overshift" is right shifting a negative value under
-C<use integer>, in which case the result is -1 (arithmetic shift).
-
-Until now negative shifting and overshifting have been undefined
-because they have relied on whatever the C implementation happens
-to do. For example, for the "overshift" a common behavior C is
-"modulo shift":
-
- 1 >> 64 == 1 >> (64 % 64) == 1 >> 0 == 1 # Common C behavior.
-
- # And the same for <<, while Perl now produces 0 for both.
-
-Now these behaviors are well-defined under Perl, regardless of what
-the underlying C implementation does. Note, however, that you cannot
-escape the native integer width. If you need more bits on the left shift,
-you could use the C<bigint> pragma.
-
-=head2 Postfix dereferencing is no longer experimental
-
-Using the C<postderef> and C<postderef_qq> features no longer emits a
-warning. Existing code that disables the C<experimental::postderef> warning
-category that they previously used will continue to work. The C<postderef>
-feature has no effect; all Perl code can use postfix dereferencing,
-regardless of what feature declarations are in scope. The C<5.24> feature
-bundle now includes the C<postderef_qq> feature.
+L<Extended Bracketed Character Classes|perlrecharclass/Extended Bracketed Character Classes>
+now will successfully compile when S<C<use locale>> is in effect. The compiled
+pattern will use standard Unicode rules. If the runtime locale is not a
+UTF-8 one, a warning is raised and standard Unicode rules are used
+anyway. No tainting is done since the outcome does not actually depend
+on the locale.
=head1 Security
=item *
-L<IPC::Open3> has been upgraded from version 1.18 to 1.19.
-
-If a Perl exception was thrown from inside this module, the exception
-C<IPC::Open3> threw to the callers of C<open3> would have an irrelevant
-message derived from C<$!> which was in an undefined state, instead of the
-C<$@> message which triggers the failure path inside C<open3>.
+L<XXX> has been upgraded from version A.xx to B.yy.
=back
=over 4
-=item VMS
+=item EBCDIC C<cmp()> and C<sort()> fixed for UTF-EBCDIC strings
+
+Comparing two strings that were both encoded in UTF-8 (or more
+precisely, UTF-EBCDIC) did not work properly until now. Since C<sort()>
+uses C<cmp()>, this fixes that as well.
+
+=item Win32
=over
=item *
-The minimum supported version of VMS is now v7.3-2, released in 2003. As a
-side effect of this change, VAX is no longer supported as the terminal
-release of OpenVMS VAX was v7.3 in 2001.
+Parallel building has been added to the dmake C<makefile.mk> makefile. All
+Win32 compilers are supported.
=back
=item *
-A leak in the XS typemap caused one scalar to be leaked each time a C<FILE *>
-or a C<PerlIO *> was C<OUTPUT:>ed or imported to Perl, since perl 5.000. These
-particular typemap entries are thought to be extremely rarely used by XS
-modules. [perl #124181]
+C<qr/(?[ () ])/> no longer segfaults, giving a syntax error message instead.
+[perl #125805]
+
+=item *
+
+Regular expression possessive quantifier v5.20 regression now fixed.
+C<qr/>I<PAT>C<{>I<min>,I<max>C<}+>C</> is supposed to behave identically
+to C<qr/(?E<gt>>I<PAT>C<{>I<min>,I<max>C<})/>. Since v5.20, this didn't
+work if I<min> and I<max> were equal. [perl #125825]
+
+=item *
+
+C<< BEGIN <> >> no longer segfaults and properly produces an error
+message. [perl #125341]
=back
XXX Generate this with:
- perl Porting/acknowledgements.pl v5.23.1..HEAD
+ perl Porting/acknowledgements.pl v5.23.2..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff