[ 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 v5.17.7
+perldelta - what is new for perl v5.17.10
=head1 DESCRIPTION
-This document describes differences between the 5.17.6 release and the 5.17.7
+This document describes differences between the 5.17.9 release and the 5.17.10
release.
-If you are upgrading from an earlier release such as 5.17.5, first read
-L<perl5176delta>, which describes differences between 5.17.5 and 5.17.6.
+If you are upgrading from an earlier release such as 5.17.8, first read
+L<perl5179delta>, which describes differences between 5.17.8 and 5.17.9.
=head1 Notice
=head1 Incompatible Changes
-=head2 readline() with C<$/ = \N> now reads N characters, not N bytes
+XXX For a release on a stable branch, this section aspires to be:
-Previously, when reading from a stream with I/O layers such as
-C<encoding>, the readline() function, otherwise known as the C<< <> >>
-operator, would read I<N> bytes from the top-most layer. [perl #79960]
+ There are no changes intentionally incompatible with 5.XXX.XXX
+ If any exist, they are bugs, and we request that you submit a
+ report. See L</Reporting Bugs> below.
-Now, I<N> characters are read instead.
-
-There is no change in behaviour when reading from streams with no
-extra layers, since bytes map exactly to characters.
-
-=head2 Lexical subroutine warnings have moved
-
-The warning about the use of an experimental feature emitted when lexical
-subroutines (added in 5.17.4) are used now happens when the subroutine
-itself is declared, not when the "lexical_subs" feature is activated via
-C<use feature>.
-
-This stops C<use feature ':all'> from warning, but causes
-C<my sub foo; my sub bar> to warn twice.
+[ List each incompatible change as a =head2 entry ]
=head1 Deprecations
[ List each deprecation as a =head2 entry ]
-=head2 Various XS-callable functions are now deprecated
-
-The following functions will be removed from a future version of Perl,
-and should not be used. With participating C compilers (e.g., gcc),
-compiling any file that uses any of these will generate a warning.
-These were not intended for public use; there are equivalent, faster,
-macros for most of them. See L<perlapi/Character classes>:
-C<is_uni_ascii>,
-C<is_uni_ascii_lc>,
-C<is_uni_blank>,
-C<is_uni_blank_lc>,
-C<is_uni_cntrl>,
-C<is_uni_cntrl_lc>,
-C<is_uni_idfirst_lc>,
-C<is_uni_space>,
-C<is_uni_space_lc>,
-C<is_uni_xdigit>,
-C<is_uni_xdigit_lc>,
-C<is_utf8_ascii>,
-C<is_utf8_blank>,
-C<is_utf8_cntrl>,
-C<is_utf8_idcont>,
-C<is_utf8_idfirst>,
-C<is_utf8_perl_space>,
-C<is_utf8_perl_word>,
-C<is_utf8_posix_digit>,
-C<is_utf8_space>,
-C<is_utf8_xdigit>.
-C<is_utf8_xidcont>,
-C<is_utf8_xidfirst>,
-C<to_uni_lower_lc>,
-C<to_uni_title_lc>,
-and
-C<to_uni_upper_lc>.
-
=head1 Performance Enhancements
XXX Changes which enhance performance without changing behaviour go here.
=item *
-L<GDBM_File> has been upgraded from version 1.14 to 1.15. The undocumented
-optional fifth parameter to C<TIEHASH> has been removed. This was intended
-to provide control of the callback used by C<gdbm*> functions in case of
-fatal errors (such as filesystem problems), but did not work (and could
-never have worked). No code on CPAN even attempted to use it. The callback
-is now always the previous default, C<croak>. Problems on some platforms with
-how the C<C> C<croak> function is called have also been resolved.
+L<XXX> has been upgraded from version A.xx to B.yy.
=back
However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
section.
-=head3 L<perlapi/Character classes>
+=head3 L<perlrebackslash/\N>
=over 4
=item *
-There are quite a few macros callable from XS modules that classify
-characters into things like alphabetic, punctuation, etc. More of these
-are now documented, including ones which work on characters whose code
-points are outside the Latin-1 range.
+This feature is no longer experimental.
=back
=head2 Discontinued Platforms
+XXX List any platforms that this version of perl no longer compiles on.
+
=over 4
-=item BeOS
+=item XXX-some-platform
-Support for BeOS has been removed.
+XXX
=back
=item *
-SvUPGRADE() is no longer an expression. Originally this macro (and its
-underlying function, sv_upgrade()) were documented as boolean, although
-in reality they always croaked on error and never returned false. In 2005
-the documentation was updated to specify a void return value, but
-SvUPGRADE() was left always returning 1 for backwards compatibility. This
-has now been removed, and SvUPGRADE() is now a statement with no return
-value.
-
-So this is now a syntax error:
-
- if (!SvUPGRADE(sv)) { croak(...); }
-
-If you have code like that, simply replace it with
-
- SvUPGRADE(sv);
-
-or to to avoid compiler warnings with older perls, possibly
-
- (void)SvUPGRADE(sv);
+XXX
=back
=item *
-C<sort {undef} ...> under fatal warnings no longer crashes. It started
-crashing in Perl 5.16.
-
-=item *
-
-Stashes blessed into each other
-(C<bless \%Foo::, 'Bar'; bless \%Bar::, 'Foo'>) no longer result in double
-frees. This bug started happening in Perl 5.16.
-
-=item *
-
-Numerous memory leaks have been fixed, mostly involving fatal warnings and
-syntax errors.
-
-=item *
-
-Lexical constants (C<my sub answer () { 42 }>) no longer cause double
-frees.
+XXX
=back
XXX Generate this with:
- perl Porting/acknowledgements.pl v5.17.6..HEAD
+ perl Porting/acknowledgements.pl v5.17.9..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff