=head1 Incompatible Changes
+=head2 In @INC, move ARCHLIB and PRIVLIB after the current version's site_perl and vendor_perl.
+
+
=head2 Switch statement changes
The handling of complex expressions by the C<given>/C<when> switch
# matches in 5.8.x, doesn't match in 5.10.0
$re = qr/^bar/; "foo\nbar" =~ /$re/m;
+=item *
+
+C<length undef> now returns undef.
+
=back
=head1 Core Enhancements
See the documentation for C<ExtUtils::MakeMaker> or C<Module::Build> for more
on how to specify C<configure_requires> when creating a distribution for CPAN.
+=head2 The C<each> function can now operate on arrays
+
+=head2 Perl's core time-related functions are now Y2038 compliand
+
+=head2 The variable C<$,> may now be tied
+
+=head2 // now behaves like || in when clauses
+
+=head2 You can now set C<-W> from the C<PERL5OPT> environment varialbe
+
+
+
=head1 Modules and Pragmata
=head2 New Modules and Pragmata
Upgraded from version 2.11 to 2.14.
+File::Copy now always return 0 (not "") on failure.
+
=item C<File::Fetch>
Upgraded from version 0.14 to 0.20.
Upgraded from version 1.00 to 1.01.
+Added -X overloading, -M, -C and -A.
+
=item C<File::Temp>
Upgraded from version 0.18 to 0.22.
Upgraded from version 1.35 to 1.37.
+=item Pod::Perldoc
+
+Upgrade from version 3.14_02 to 3.15.
+
=item C<Pod::Simple>
Upgraded from version 3.05 to 3.07.
=item C<Term::ANSIColor>
-Upgraded from version 1.12 to 2.00.
+Upgraded from version 1.12 to 2.01.
=item C<Term::ReadLine>
=item C<threads>
-Upgraded from version 1.67 to 1.72.
+Upgraded from version 1.67 to 1.73.
=item C<threads::shared>
Upgraded from version 1.04 to 1.05.
+UNIVERSAL->import() is now deprecated.
+
+
=item C<Win32>
Upgraded from version 0.34 to 0.39.
The debugger now correctly handles proxy constant subroutines, and
subroutine stubs.
+
+=item F<perlbug>
+
+ Perlbug now uses %Module::CoreList::bug_tracker to print out upstream bug tracker URLs.
+
+Where the user names a module that their bug report is about, and we know the
+URL for its upstream bug tracker, provide a message to the user explaining
+that the core copies the CPAN version directly, and provide the URL for
+reporting the bug directly to upstream.
+
=item F<perlthanks>
-Perl 5.10.1 adds a new utility F<perlthanks>, which is a variant of
+Perl 5.10.1 added a new utility F<perlthanks>, which is a variant of
F<perlbug>, but for sending non-bug-reports to the authors and maintainers
of Perl. Getting nothing but bug reports can become a bit demoralising:
we'll see if this changes things.
L<perlapi>, L<perlintern>, L<perlmodlib> and L<perltoc> are now all
generated at build time, rather than being shipped as part of the release.
+=head2 Documented -X overloading.
+
+=head2 Documented that when() treats specially most of the filetest operators
+
+=head2 Documented that DESTROY is subject to AUTOLOAD, and the related optimisations.
+
+=head2 Documented when as a syntax modifier
+
+=head2 Eliminated "Old Perl threads tutorial", which describes 5005 threads.
+
+pod/perlthrtut.pod is the same material reworked for ithreads.
+
+=head2 Removed a link to the attrs pragma, which has now been removed.
+
+=head2 update PERL_MEM_LOG in perlhack.pod
+
+=head2 Correct previous documentation: v-strings are not deprecated
+
+With version objects, we need them to use MODULE VERSION syntax. This
+patch removes the deprecation note.
+
+
=head1 Performance Enhancements
=over 4
Empty C<DESTROY> methods are no longer called.
+=item *
+
+Faster sv_utf8_upgrade()
+
+=item *
+
+Speed up keys() on empty hash
+
=back
=head1 Installation and Configuration Improvements
shell and other utilities that depend on POSIX exit values. See
L<perlvms/"$?"> for details.
+File::Copy now detects Unix compatibility mode on VMS.
+
=back
=head1 Selected Bug Fixes
Assertion rx->sublen >= (s - rx->subbeg) + i failed
-
=back
=head1 New or Changed Diagnostics
=item *
-C<suidperl> will be removed in 5.12.0. This provides a mechanism to
+C<suidperl> has been removed. It used to provide a mechanism to
emulate setuid permission bits on systems that don't support it properly.
+=item *
+
+Deprecate assignment to $[
+
+=item *
+
+Remove attrs, which has been deprecated since 1999/10/02.
+
+=item *
+
+Deprecate use of the attribute :locked on subroutines.
+
+=item *
+
+Deprecate using "locked" with the attributes pragma.
+
+=item *
+
+Deprecate using "unique" with the attributes pragma.
+
+=item *
+
+warn if ++ or -- are unable to change the value because it's beyond the limit of representation
+
+This uses a new warnings category: "imprecision".
+
+
+=item *
+
+Make lc/uc/lcfirst/ucfirst warn when passed undef.
+
+=item *
+
+Show constant in "Useless use of a constant in void context"
+
+=item *
+
+Make the new warning report undef constants as undef
+
+=item *
+
+Add a new warning, "Prototype after '%s'"
+
+=item *
+
+Tweak the "Illegal character in prototype" warning so it's more precise when reporting illegal characters after _
+
+=item *
+
+Unintented interpolation of $\ in regex
+
+=item *
+
+Make overflow warnings in gmtime/localtime only occur when warnings are on
+
+=item *
+
+Improve mro merging error messages.
+
+They are now very similar to those produced by Algorithm::C3.
+
+=item *
+
+Amelioration of the error message "Unrecognized character %s in column %d"
+
+Changes the error message to "Unrecognized character %s; marked by <--
+HERE after %s<-- HERE near column %d". This should make it a little
+simpler to spot and correct the suspicious character.
+
+=item *
+
+Explicitely point to $. when it causes an uninitialized warning for ranges in scalar context
+
=back
=head1 Acknowledgements
The other core committers contributed most of the changes, and applied most
of the patches sent in by the hundreds of contributors listed in F<AUTHORS>.
+Much of the work of categorizing changes in this perldelta file was contributed
+by the following porters using changelogger.bestpractical.com:
+
+Nicholas Clark, leon, shawn, alexm, rjbs, rafl, Pedro Melo, brunorc,
+anonymous, ☄, Tom Hukins, anonymous, Jesse, dagolden, Moritz Onken,
+Mark Fowler, chorny, anonymous, tmtm
+
+
Finally, thanks to Larry Wall, without whom none of this would be
necessary.
The F<Artistic> and F<Copying> files for copyright information.
=cut
+
+
+=head1 TODO
+
+The following changes are a filtered list of changes which weren't backported
+to 5.10.1. They were run through changelogger.bestpractical.com and triaged
+by a set of Perl 5 Porters. Changes to blead after 5945e41e have not yet
+been triaged or integrated.
+
+The following changes need to be
+
+1) deleted if they don't merit inclusion
+
+ OR
+
+2) lightly copyedited and integrated into the perldelta above. Unfortunately, many of our
+commit messages are somewhat terse and require a bit more help to turn into something readable
+
+
+
+
+=head1 API
+
+=head2 Move the reg_stringify logic to Perl_sv_2pv_flags
+
+=head2 mg_copy ought to take an I32
+
+=head2 Perl_store_cop_label() isn't meant to be part of the public API.
+
+=head2 Perl_gv_fetchmethod{,_autoload,_flags} are actually never* called with a non-NULL stash.
+So change the parameter to NN.
+
+
+=head2 Promote Perl_setdefout() to the public API.
+
+=head2 Add get_cvs() as a shortcut for STR_WITH_LEN() and Perl_get_cvn_flags()
+
+=head2 In Perl_newCONSTSUB(), sv should not be NULL.
+
+=head2 GvUNIQUE* have been defined as 0 since 2005/06/30 - high time to remove them.
+
+=head2 invert and rename PERL_MEM_LOG_STDERR to PERL_MEM_LOG_NOIMPL
+
+Most users who want PERL_MEM_LOG want the default implementation,
+give it to them. Users providing their own implementation can
+obtain current behavior by adding -DPERL_MEM_LOG_NOIMPL.
+Frankly, the average user probably wants _ENV by default too.
+
+=head2 simplify PERL_MEM_LOG
+
+This combines multiple environment variable reads into 1,
+where it looks for values like "2mst"
+-2 leading digits are atoi()d to get FD
+-m memory logging please
+-s sv logging also
+-t timestamp those please.
+
+Combining these reduces overhead such that it seemed
+worthwhile to drop all the ifdefs. TBD whether this works
+in the environment that drove the original tradeoffs.
+
+If it isnt enough, Id be tempted by a global static ptr,
+and on 1st use, is read, seen 0, a lock is taken, and getenvar
+run to populate it, unlocked, proceed. This would remove
+iterative overheads.
+
+=head2 Add a parameter "destructing" to Gv_AMupdate()
+
+This boolean parameter indicates if the function has been called
+to update the overload magic table while looking up the DESTROY
+method. In this case, it's probably best to avoid croaking if
+those tables could not be updated (for example due to a method
+that could not be loaded.)
+
+=head2 Modify the return value of Gv_AMupdate to indicate a compilation error
+
+This way we'll restore most of the performance on object desctruction
+lost by the previous commit
+
+
+=head2 local $SIG{FOO} = sub {...}; sets signal handler to SIG_DFL
+
+Re: [perl #60360] [PATCH] UPDATED: local $SIG{FOO} = sub {...}; sets signal handler to SIG_DFL
+Message-ID: <20081112234504.GI2062@tytlal.topaz.cx>
+
+Updated patch to retain source compatibility.
+
+Plus using the correct PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS
+macro and running make regen.
+
+=head2 Respecting inc_version_list while processing PERL_VENDORLIB_STEM
+
+Respecting inc_version_list while processing PERL_VENDORLIB_STEM
+From: "Mandalemula, Rajesh" <Rajesh.Mandalemula@deshaw.com>
+
+=head2 Change PL_debug behaviour
+
+
+String eval lines are now saved whenever
+a subroutine is defined, even if the eval'd string has subsequent
+syntax errors. This allows the debugger to single step into these
+subroutines.
+
+
+=head2 Tied filehandles now have an additional method EOF which provides the EOF type
+
+=head2 Perl is now smarter about adding a -I dir to the beginning or end of @INC
+
+=head2 On scope end, delete localized array elements that should not exist anymore, so that the array recovers its previous length. Honour EXISTS and DELETE for tied arrays.
+
+=head2 When a glob is deleted, mark its sub as ANON.
+
+=head2 Require a space or a newline after a "#line XXX" directive
+
+=head2 Forbid using "foreach" as an attribute
+
+(like all other control flow statements)
+
+
+=head2 Unregister signal handlers before destroying my_perl
+
+If the signal handler runs after perl_destruct() has been called, it
+will get an invalid (or NULL) my_perl when it asks for the
+thread-specific interpreter struct. This patch resets the signal
+handler for any signal previously handled by PL_csighandlerp to SIG_DFL
+before calling perl_destruct().
+
+=head2 Perl_magic_clearsig() needs to remove magic, else delete $SIG{INT} returns undef
+
+Perl_magic_clearsig() needs to remove magic, else delete $SIG{INT} returns undef
+instead of the now-removed INT handler.
+
+=head2 [perl #66452] TMPDIR not honored when opening an anonymous temporary file
+
+[perl #66452] TMPDIR not honored when opening an anonymous temporary file
+
+=head2 The attached patch to perlio.c fixes the problem of errno getting set.
+
+While I am firmly in the school of "do not look at $! except immediately
+after a failure", I also agree that spuriously setting it is messy. But
+there is just no way of knowing where your errno might have been.
+
+The problem was that PerlIO_fast_gets() (and other nearby similar
+capability-checking PerlIO routines) set the errno (and it was being
+called a lot, from sv_gets()). I think setting the errno here was
+a mistake: checking for "can has FOO" should not set external state,
+such as the errno. The patch removes that errno trashing from all those
+routines.
+
+=head2 Trim all trailing / from "." in @INC when filling %INC
+
+This fixes bug #66942 : as a / was left in the directory name,
+$INC{"Foo.pm"} for a file loaded from the current directory
+was given the incorrect value "/Foo.pm".
+
+=head2 Don't enqueue pending signals during global destruction
+
+Global destruction is not signal-safe. PL_psig_pend may already
+be gone when the signal handler is called (with destruct_level > 0).
+NULL it before freeing it to prevent a race condition.
+
+=head2 Eliminate struct regexp_allocated and xpvio_allocated.
+
+Calculate memory allocation using regexp and XPVIO, and the offset of the first
+real structure member. This avoids tripping over alignment differences between
+X* and x*_allocated, because x*_allocated doesn't have a double in it.
+
+
+=head1 internals
+
+=head2 [perl #47047] Use of inherited AUTOLOAD for non-method is deprecated
+
+=head2 Remove the definitions of Null(), Nullch, Nullfp, Nullsv and PL_na when code is within the perl source tree
+
+=head2 Replace our assert-which-can-be-caught-by-eval with the real deal from the standard C library.
+
+=head2 Tweak Perl_sv_upgrade() so that references can upgrade to SVt_PV
+
+=head2 Eliminate prelen from struct regexp.
+
+=head2 Change Perl_av_iter_p() to return IV* rather than I32* (which means
+
+=head2 Reorder the external regexp flags to get RXf_PMf_STD_PMMOD into the
+
+lowest 4 bits (which saves a shift), and the "flags indicating special
+patterns" into contiguous bits. This makes everything a little tidier,
+and saves 88 bytes (woohoo!) of object file with -Os on x86 FreeBSD.
+
+
+=head2 Re-implement the SvOOK() hack to store the offset as a BER encoded number in the part of the PVX that is being released.
+(It will always
+fit, as chopping off 1 byte gives just enough space for recording a
+delta of up to 127). This allows SvOOK() to co-exist with SvIOK_on(),
+which means all the calls to SvOOK_off() [with the possibility of a
+call to sv_backoff()] in SvIOK_on() can be removed. This ought to make
+a lot of straight line code a little bit simpler.
+OOK()d scalars can now be SVt_PV, as the IVX isn't needed.
+
+=head2 Abolish wraplen from struct regexp. We're already storing it in SvCUR.
+
+=head2 Make Perl_pregcomp() use SvUTF8() of the pattern, rather than the flag bit in pmflags, to decide whether the pattern is UTF-8.
+
+=head2 Abolish RXf_UTF8. Store the UTF-8-ness of the pattern with SvUTF8().
+
+=head2 In struct regexp move the member paren_names to the IV union.
+
+=head2 Make REGEXP a type distinct from SV. (Much like AV, CV, GV, HV).
+
+=head2 Allow sv_setsv_flags() to copy SVt_REGEXP much like it copies SVt_FORMAT - the just string buffer.
+
+
+=head2 Correct a long-standing ithreads reference counting anonamly
+
+The reference count only needs "doubling" when the scalar is pushed onto
+PL_regex_padav for the second time.
+
+
+=head2 In PL_regexp_padav, store regexps via real references, rather than hiding them within IVs.
+
+We can do this now that they are real SV pointers.
+
+=head2 With regexps stored as real RVs, we can eliminate SvREPADTMP().
+
+=head2 REGEXPs are now stored directly in PL_regex_padav, rather than indirectly via RVs.
+
+=head2 Remove code that protected pp_qr against REGEXPs going away during global destruction whilst they were stored via true references in PL_regex_padav.
+
+=head2 Remove PM_GETRE_SAFE and PM_SETRE_SAFE as nothing uses them.
+
+=head2 Note the U8 sized space created by removing -P, and check that it is now an illegal command line flag.
+
+=head2 Pack the recycled pad offsets into an SV at PL_regex_pad[0].
+
+=head2 Re-order so that the !SvOK() case is last (which should be rare)
+
+=head2 Extend PUSHFORMAT() to take a second parameter to set retop, to save NULLing it and then reassigning.
+
+=head2 Split struct block_sub into struct block_sub and struct block_format.
+
+Split struct block_sub into struct block_sub and struct block_format.
+(CXt_SUB and CXt_FORMAT were using some comon members, but some members
+were only for one or the other.)
+
+=head2 Change the wantarray result from caller from IV to bool for the SCALAR/ARRAY case.
+
+This doesn't contradict the documentation, as there isn't any. Oops.
+
+
+=head2 Give G_VOID, G_SCALAR and G_ARRAY the same numeric values as OPf_WANT_VOID, OPf_WANT_SCALAR and OPf_WANT_LIST.
+
+
+=head2 Squeeze the context type down to 4 bits, and move the private flags to fit within the next 4 bits.
+
+
+=head2 In struct block change blku_type from U8 to U16, and the "spare" U8 to U16, with the lockstep changes in struct subst.
+Eliminate lval from
+struct block_sub, and instead store it in the U16 in struct block.
+
+
+=head2 In struct block_eval, eliminate old_in_eval and old_op_type by storing the data in blk_u16.
+
+
+=head2 The layout for struct block_loop under ithreads can be simplified.
+
+Instead of wedging the pad offset into a void* iterdata, and always
+storing PL_comppad even when it isn't used, instead do this:
+
+PAD *oldcomppad; /* Also used for the GV, if targoffset is 0 */
+/* This is also accesible via cx->blk_loop.my_op->op_targ */
+PADOFFSET targoffset;
+
+and store the GV pointer in oldcompad. Pointers to pointers seems
+cleaner. This also allows us to eliminate the flag bit CXp_PADVAR.
+
+
+=head2 In XS_PerlIO_get_layers() take advantage of the implementation of
+
+In XS_PerlIO_get_layers() take advantage of the implementation of
+PerlIO_get_layers(), by co-opting the new SVs it creates, rather than
+copying them.
+
+
+=head2 Micro-optimise the order of the context types. [Because I can :-)]
+
+=head2 [patch] optimize OP_IS_(FILETEST|SOCKET) macros
+
+=head2 Eliminate ck_lengthconst.
+
+=head2 Chainsaw DEBUG_S out, as suggested by Vincent Pit.
+
+=head2 Unsupported private API functions are now declared "static" to prevent leakage to the public API
+
+=head2 Perl_cv_ckproto() is not part of the public API, and not used anywhere. It has been removed
+
+=head2 Remove all the 5005threads specific mutex macros, which are now vestigial.
+
+=head2 Do not honor TMPDIR for anonymous temporary files when tainting
+
+Use a default of /tmp on Unixes when TMPDIR is unset or empty, or
+when creation of a temporary file in it fails
+
+=head2 Add a pluggable hook in op_free()
+
+
projects / p5sagit/p5-mst-13.2.git / commitdiff