[ 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 v5.31.1
+perldelta - what is new for perl v5.31.4
=head1 DESCRIPTION
-This document describes differences between the 5.31.0 release and the 5.31.1
+This document describes differences between the 5.31.3 release and the 5.31.4
release.
-If you are upgrading from an earlier release such as 5.30.0, first read
-L<perl5310delta>, which describes differences between 5.30.0 and 5.31.0.
+If you are upgrading from an earlier release such as 5.31.2, first read
+L<perl5313delta>, which describes differences between 5.31.2 and 5.31.3.
=head1 Notice
[ List each enhancement as a =head2 entry ]
+=head2 Now can dump compiled patterns before optimization
+
+This is primarily useful for tracking down bugs in the regular
+expression compiler. This dump happens on C<-DDEBUGGING> perls, if you
+specify C<-Drv> on the command line; or on any perl if the pattern is
+compiled within the scope of S<C<use re qw(Debug DUMP_PRE_OPTIMIZE)>> or
+S<C<use re qw(Debug COMPILE EXTRA)>>. (All but the 2nd case display
+other information as well.)
+
=head1 Security
XXX Any security-related notices go here. In particular, any security
=head1 Incompatible Changes
-=head2 Use of L<C<vec>|perlfunc/vec EXPR,OFFSET,BITS> on strings with code points above 0xFF is forbidden
-
-Such strings are represented internally in UTF-8, and C<vec> is a
-bit-oriented operation that will likely give unexpected results on those
-strings. This was deprecated in perl 5.28.0.
+XXX For a release on a stable branch, this section aspires to be:
-=head2 Use of code points over 0xFF in string bitwise operators
+ 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.
-Some uses of these were already illegal after a previous deprecation
-cycle. The remaining uses are now prohibited, having been deprecated in perl
-5.28.0. See L<perldeprecation>.
+[ List each incompatible change as a =head2 entry ]
=head1 Deprecations
=item *
-L<IO> has been upgraded from version 1.40 to 1.41.
-
-The supplied I<TO> is now always honoured on calls to the send()
-method. [perl #133936]
-
-=item *
-
-L<Storable> has been upgraded from version 3.15 to 3.16.
+L<XXX> has been upgraded from version A.xx to B.yy.
-Regular expressions objects weren't properly counted for object id
-purposes on retrieve. This would corrupt the resulting structure, or
-cause a runtime error in some cases. [perl #134179]
+If there was something important to note about this change, include that here.
=back
=item *
-Pod::Parser has been removed from the core distribution.
-It still is available for download from CPAN. This resolves [perl
-#119439].
+XXX
=back
Additionally, the following selected changes have been made:
-=head3 L<perlguts>
-
-=over 4
-
-=item *
-
-Documentation about embed.fnc flags has been removed. F<embed.fnc> now has
-sufficient comments within it. Anyone changing that file will see those
-comments first, so entries here are now redundant.
-
-=back
-
-=head3 L<perlpod>
+=head3 L<XXX>
=over 4
=item *
-Advice has been added regarding the usage of C<< Z<> >>.
+XXX Description of the change here
=back
=head2 Discontinued Platforms
+XXX List any platforms that this version of perl no longer compiles on.
+
=over 4
-=item Windows CE
+=item XXX-some-platform
-Support for building perl on Windows CE has now been removed.
+XXX
=back
=item *
-L<eval_pv()|perlapi/eval_pv> no longer stringifies the exception when
-C<croak_on_error> is true. [perl #134175]
+XXX
=back
=item *
-Setting C<$)> now properly sets supplementary group ids if you have
-the necessary privileges. [perl #134169]
-
-=item *
-
-close() on a pipe now preemptively clears the PerlIO object from the
-IO SV. This prevents a second attempt to close the already closed
-PerlIO object if a signal handler calls die() or exit() while close()
-is waiting for the child process to complete. [perl #122112]
-
-=item *
-
-C<< sprintf("%.*a", -10000, $x) >> would cause a buffer overflow due
-to mishandling of the negative precision value. [perl #134008]
-
-=item *
-
-scalar() on a reference could cause an erroneous assertion failure
-during compilation. [perl #134045]
-
-=item *
-
-C<%{^CAPTURE_ALL}> is now an alias to C<%-> as documented, rather than
-incorrectly an alias for C<%+>. [perl #131867]
-
-=item *
-
-C<%{^CAPTURE}> didn't work if C<@{^CAPTURE}> was mentioned first.
-Similarly for C<%{^CAPTURE_ALL}> and C<@{^CAPTURE_ALL}>, though
-C<@{^CAPTURE_ALL}> currently isn't used. [perl #131193]
-
-=item *
-
-Extraordinarily large (over 2GB) floating point format widths could
-cause an integer overflow in the underlying call to snprintf(),
-resulting in an assertion. Formatted floating point widths are now
-limited to the range of int, the return value of snprintf(). [perl
-#133913]
-
-=item *
-
-Parsing the following constructs within a sub-parse (such as with
-C<"${code here}"> or C<s/.../code here/e>) has changed to match how
-they're parsed normally:
-
-=over
-
-=item *
-
-C<print $fh ...> no longer produces a syntax error.
-
-=item *
-
-Code like C<s/.../ ${time} /e> now properly produces an "Ambiguous use
-of ${time} resolved to $time at ..." warning when warnings are enabled.
-
-=item *
-
-C<@x {"a"}> (with the space) in a sub-parse now properly produces a
-"better written as" warning when warnings are enabled.
-
-=item *
-
-attributes can now be used in a sub-parse.
-
-=back
-
-[perl #133850]
-
-=item *
-
-Incomplete hex and binary literals like C<0x> and C<0b> are now
-treated as if the C<x> or C<b> is part of the next token. [perl
-#134125]
-
-=item *
-
-A spurious C<)> in a subparse, such as in C<s/.../code here/e> or
-C<"...${code here}">, no longer confuses the parser.
-
-Previously a subparse was bracketed with generated C<(> and C<)>
-tokens, so a spurious C<)> would close the construct without doing the
-normal subparse clean up, confusing the parser and possible causing an
-assertion failure.
-
-Such constructs are now surrounded by artificial tokens that can't be
-included in the source. [perl #130585]
-
-=item *
-
-Reference assignment of a sub, such as C<\&foo = \&bar;>, silently did
-nothing in the C<main::> package. [perl #134072]
-
-=item *
-
-sv_gets() now recovers better if the target SV is modified by a signal
-handler. [perl #134035]
-
-=item *
-
-C<readline @foo> now evaluates C<@foo> in scalar context. Previously
-it would be evalauted in list context, and since readline() pops only
-one argument from the stack, the stack could underflow, or be left
-with unexpected values on the stack. [perl #133989]
+Perl no longer treats strings starting with "0x" or "0b" as hex or
+binary numbers respectively when converting a string to a number.
+This reverts a change in behaviour inadvertently introduced in perl
+5.30.0 intended to improve precision when converting a string to a
+floating point number. [perl #134230]
=back
XXX Generate this with:
- perl Porting/acknowledgements.pl v5.31.0..HEAD
+ perl Porting/acknowledgements.pl v5.31.3..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff