[ 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 v5.21.9
+perldelta - what is new for perl v5.21.11
=head1 DESCRIPTION
-This document describes differences between the 5.21.8 release and the 5.21.9
+This document describes differences between the 5.21.10 release and the 5.21.11
release.
-If you are upgrading from an earlier release such as 5.21.7, first read
-L<perl5218delta>, which describes differences between 5.21.7 and 5.21.8.
+If you are upgrading from an earlier release such as 5.21.9, first read
+L<perl52110delta>, which describes differences between 5.21.9 and 5.21.10.
=head1 Notice
XXX Any deprecated features, syntax, modules etc. should be listed here.
+=head2 Making all warnings fatal is discouraged
+
+The documentation for L<fatal warnings|warnings/Fatal Warnings> notes
+that C<< use warnings FATAL => 'all' >> is discouraged
+and provides stronger language about the risks of fatal warnings
+in general.
+
=head2 Module removals
XXX Remove this section if inapplicable.
=item *
-L<B> has been upgraded from version 1.55 to 1.56.
+L<attributes> has been upgraded from version 0.26 to 0.27.
=item *
-L<bigint>, L<bignum>, L<bigrat> have been upgraded to version 0.39.
-
-Document in CAVEATS that using strings as numbers won't always invoke
-the big number overloading, and how to invoke it. [perl #123064]
+L<B> has been upgraded from version 1.57 to 1.58.
=item *
-L<Devel::Peek> has been upgraded from version 1.21 to 1.22.
+L<B::Deparse> has been upgraded from version 1.34 to 1.35.
=item *
-L<Encode> has been upgraded from version 2.67 to 2.68.
-
-Building in C++ mode on Windows now works.
+L<Config::Perl::V> has been upgraded from version 0.23 to 0.24.
=item *
-L<Opcode> has been upgraded from version 1.31 to 1.32.
+L<Cwd> has been upgraded from version 3.55 to 3.56.
=item *
-L<PerlIO::scalar> has been upgraded from version 0.21 to 0.22.
-
-Attempting to write at file positions impossible for the platform now
-fail early rather than wrapping at 4GB.
+L<ExtUtils::Miniperl> has been upgraded from version 1.04 to 1.05.
=item *
-L<Win32> has been upgraded from version 0.49 to 0.51.
-
-GetOSName() now supports Windows 8.1, and building in C++ mode now works.
+L<ExtUtils::ParseXS> has been upgraded from version 3.27 to 3.28.
=item *
-L<Win32API::File> has been upgraded from version 0.1201 to 0.1202
+L<ExtUtils::Typemaps> has been upgraded from version 3.25 to 3.28.
-Building in C++ mode now works.
+=item *
+
+L<File::Spec> has been upgraded from version 3.55 to 3.56.
=item *
-L<POSIX> has been upgraded from version 1.49 to 1.50.
+L<if> has been upgraded from version 0.0603 to 0.0604.
=item *
-L<Benchmark> has been upgraded from version 1.19 to 1.20.
+L<IO::Socket::IP> has been upgraded from version 0.36 to 0.37.
=item *
-L<Unicode::UCD> has been upgraded from version 0.60 to 0.61.
+L<Module::CoreList> has been upgraded from version 5.20150320 to 5.20150420.
-=over 4
+Updated to cover the latest releases of Perl.
=item *
-A new function L<property_values()|Unicode::UCD/prop_values()>
-has been added to return a given property's possible values.
+L<perl5db.pl> has been upgraded from 1.48 to 1.49.
+
+The debugger would cause an assertion failure. [perl #124127]
=item *
-A bug has been fixed so that L<propaliases()|Unicode::UCD/prop_aliases()>
-returns the correct short and long names for the Perl extensions where
-it was incorrect.
+L<PerlIO::mmap> has been upgraded from version 0.013 to 0.014.
=item *
-This module now works on EBCDIC platforms.
+L<utf8> has been upgraded from version 1.15 to 1.16.
-=back
+=item *
+
+L<warnings> has been upgraded from version 1.31 to 1.32.
=back
However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
section.
-=head3 L<XXX>
+=head3 L<perlebcdic>
+
+=over 4
+
+=item *
+
+This document has been significantly updated in the light of recent
+improvements to EBCDIC support.
+
+=back
+
+=head3 L<perlhacktips>
=over 4
=item *
-XXX Description of the change here
+Documentation has been added illustrating the perils of assuming the contents of
+static memory pointed to by the return values of Perl wrappers for C library
+functions doesn't change.
=back
-=head3 L<perlfaq>
+=head3 L<perlvms>
=over 4
=item *
-L<perlfaq> has been synchronized with version 5.021009 from CPAN.
+Out-of-date and/or incorrect material has been removed.
=back
=over 4
-=item Windows
+=item Win32
-Perl can now be built in C++ mode on Windows by setting the makefile macro
-C<USE_CPLUSPLUS> to the value "define".
+F<miniperl.exe> is now built with C<-fno-strict-aliasing>, allowing
+64-bit builds to complete on GCC 4.8. [perl #123976]
-List form pipe open no longer falls back to the shell.
+C<test-prep> again depends on C<test-prep-gcc> for GCC builds. [perl
+#124221]
=back
=head1 Internal Changes
-XXX Changes which affect the interface available to C<XS> code go here. Other
-significant internal changes for future core maintainers should be noted as
-well.
+=over 4
-[ List each change as a =item entry ]
+=item *
+
+5.21.2 introduced a new build option, C<-DPERL_OP_PARENT>, which causes
+the last C<op_sibling> pointer to refer back to the parent rather than
+being C<NULL>, and where instead a new flag indicates the end of the
+chain. In this release, the new implementation has been revised; in
+particular:
=over 4
=item *
-XXX
+On C<PERL_OP_PARENT> builds, the C<op_sibling> field has been renamed
+C<op_sibparent> to reflect its new dual purpose. Since the intention is that
+this field should primarily be accessed via macros, this change should be
+transparent for code written to work under C<PERL_OP_PARENT>.
+
+=item *
+
+The newly-introduced C<op_lastsib> flag bit has been renamed C<op_moresib>
+and its logic inverted; i.e. it is initialised to zero in a new op, and is
+changed to 1 when an op gains a sibling.
+
+=item *
+
+The function C<Perl_op_parent> is now only available on C<PERL_OP_PARENT>
+builds. Using it on a plain build will be a compile-timer error.
+
+=item *
+
+Three new macros, C<OpMORESIB_set>, C<OpLASTSIB_set>, C<OpMAYBESIB_set>
+have been added, which are intended to be be a low-level portable way to
+set C<op_sibling> / C<op_sibparent> while also updating C<op_moresib>.
+The first sets the sibling pointer to a new sibling, the second makes the
+op the last sibling, and the third conditionally does the first or second
+action. The C<op_sibling_splice()> function is retained as a higher-level
+interface that can also maintain consistency in the parent at the same time
+(e.g. by updating C<op_first> and C<op_last> where appropriate).
+
+=item *
+
+The macro C<OpSIBLING_set>, added in 5.21.2, has been removed. It didn't
+manipulate C<op_moresib> and has been superseded by C<OpMORESIB_set> et
+al.
+
+=item *
+
+The C<op_sibling_splice> function now accepts a null C<parent> argument
+where the splicing doesn't affect the first or last ops in the sibling
+chain, and thus where the parent doesn't need to be updated accordingly.
+
+=back
+
=back
=item *
-The original visible value of C<$/> is now preserved when it is set to
-an invalid value. Previously if you set C<$/> to a reference to an
-array, for example, perl would produce a runtime error and not set
-C<PL_rs>, but perl code that checked C<$/> would see the array
-reference. [perl #123218]
-
-=item *
-
-In a regular expression pattern, a POSIX class, like C<[:ascii:]>, must
-be inside a bracketed character class, like C</qr[[:ascii:]]>. A
-warning is issued when something looking like a POSIX class is not
-inside a bracketed class. That warning wasn't getting generated when
-the POSIX class was negated: C<[:^ascii:]>. This is now fixed.
+C<pack("D", $x)> and C<pack("F", $x)> now zero the padding on x86 long
+double builds. GCC 4.8 and later, under some build options, would
+either overwrite the zero-initialized padding, or bypass the
+initialized buffer entirely. This caused F<op/pack.t> to fail. [perl
+#123971]
=item *
-Fix a couple of other size calculation overflows. [perl #123554]
+Extending an array cloned from a parent thread could result in
+"Modification of a read-only value attempted" errors when attempting
+to modify the new elements. [perl #124127]
=back
XXX Generate this with:
- perl Porting/acknowledgements.pl v5.21.8..HEAD
+ perl Porting/acknowledgements.pl v5.21.10..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff