=head2 Unicode 6.3 now supported
Perl now supports and is shipped with Unicode 6.3 (though Perl may be
-recompiled with any previous Unicode release as well). A detailed
-list of Unicode 6.3 changes is at
-L<http://www.unicode.org/versions/Unicode6.3.0/>.
+recompiled with any previous Unicode release as well). A detailed list of
+Unicode 6.3 changes is at L<http://www.unicode.org/versions/Unicode6.3.0/>.
=head2 Experimental Postfix Dereferencing
For more information, consult L<the Postfix Dereference Syntax section of
perlref|perlref/Postfix Dereference Syntax>.
+=head2 C<sub>s now take a C<prototype> attribute
+
+When declaring or defining a C<sub>, the prototype can now be specified inside
+of a C<prototype> attribute instead of in parens following the name.
+
+For example, C<sub foo($$){}> could be rewritten as
+C<sub foo : prototype($$){}>.
+
=head1 Security
XXX Any security-related notices go here. In particular, any security
=head2 Functions C<PerlIO_vsprintf> and C<PerlIO_sprintf> have been removed
-These two functions, undocumented, unused in CPAN, and problematic have
-been removed.
+These two functions, undocumented, unused in CPAN, and problematic have been
+removed.
=head1 Deprecations
=item *
-Perl has an optimizer for regular expression patterns. It analyzes the
-pattern to find things such as the minimum length a string has to be to
-match, etc. It now better handles code points that are above the Latin1
-range.
+Perl has an optimizer for regular expression patterns. It analyzes the pattern
+to find things such as the minimum length a string has to be to match, etc. It
+now better handles code points that are above the Latin1 range.
=back
=item *
+L<attributes> has been upgraded from version 0.21 to 0.22.
+
+Support has been added for the C<prototype> attribute.
+
+=item *
+
L<autodie> has been upgraded from version 2.21 to 2.22.
No changes have been made to the installed code other than the version bump to
=item *
-L<ExtUtils::MakeMaker> has been upgraded from version 6.76 to 6.79_01.
+L<ExtUtils::MakeMaker> has been upgraded from version 6.76 to 6.80.
Numerous updates and bug fixes are incorporated. See the F<Changes> file for
full details.
=item *
-L<List::Util> has been upgraded from version 1.32 to 1.33.
+L<List::Util> has been upgraded from version 1.32 to 1.34.
The list reduction functions C<any>, C<all>, C<none> and C<notall> have been
added.
=item *
-L<threads> has been upgraded from verion 1.87 to 1.89.
+L<threads> has been upgraded from version 1.87 to 1.89.
The documentation of C<alarm> and C<_handle> has been updated.
However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
section.
-=head3 L<XXX>
+=head3 L<perlref>
+
+=over 4
+
+=item *
+
+Documentation of the new postfix dereference syntax has been added.
+
+=back
+
+=head3 L<perlreguts>
=over 4
=item *
-XXX Description of the change here
+The documentation has been updated in the light of recent changes to
+F<regcomp.c>.
+
+=back
+
+=head3 L<perlvar>
+
+=over 4
+
+=item *
+
+Three L<English> variable names which have long been documented but do not
+actually exist have been removed from the documentation.
=back
=item *
-XXX L<message|perldiag/"message">
+L<Attribute prototype(%s) discards earlier prototype attribute in same sub|perldiag/"Attribute prototype(%s) discards earlier prototype attribute in same sub">
+
+(W misc) A sub was declared as sub foo : prototype(A) : prototype(B) {}, for
+example. Since each sub can only have one prototype, the earlier
+declaration(s) are discarded while the last one is applied.
+
+=item *
+
+L<Postfix dereference is experimental|perldiag/"Postfix dereference is experimental">
+
+(S experimental::postderef) This warning is emitted if you use the experimental
+postfix dereference syntax. Simply suppress the warning if you want to use the
+feature, but know that in doing so you are taking the risk of using an
+experimental feature which may change or be removed in a future Perl version:
+
+ no warnings "experimental::postderef";
+ use feature "postderef", "postderef_qq";
+ $ref->$*;
+ $aref->@*;
+ $aref->@[@indices];
+ ... etc ...
+
+=item *
+
+L<Prototype '%s' overridden by attribute 'prototype(%s)' in %s|perldiag/"Prototype '%s' overridden by attribute 'prototype(%s)' in %s">
+
+(W prototype) A prototype was declared in both the parentheses after the sub
+name and via the prototype attribute. The prototype in parentheses is useless,
+since it will be replaced by the prototype from the attribute before it's ever
+used.
=back
=item *
-XXX
+The new postfix dereference syntax is tested by a new test script,
+F<t/op/postfixderef.t>.
=back
=item *
-XXX
+C<last> no longer returns values that the same statement has accumulated so
+far, fixing amongst other things the long-standing bug that C<push @a, last>
+would try to return the @a, copying it like a scalar in the process and
+resulting in the error, "Bizarre copy of ARRAY in last." [perl #3112]
+
+=item *
+
+An optimization in Perl 5.18 made incorrect assumptions causing a bad
+interaction with the L<Devel::CallParser> CPAN module. This was partially
+fixed in Perl 5.19.4, but the fix was not sufficient and another fault has now
+been corrected.
+
+=item *
+
+In some cases, closing file handled opened to pipe to or from a process, which
+had been duplicated into a standard handle, would call perl's internal waitpid
+wrapper with a pid of zero. With the fix for [perl #85228] this zero pid was
+passed to waitpid(), possibly blocking the process. This wait for process
+zero no longer occurs. [perl #119893]
=back
https://perl5.git.perl.org / perl5.git / blobdiff