[perl.git] branch blead, updated. v5.15.9-240-g470722b

In perl.git, the branch blead has been updated

<http://perl5.git.perl.org/perl.git/commitdiff/470722b48ea05e8267d95479f715193214359722?hp=730c15e1bf81c0756abe6ced655e8e5699dd5249>

- Log -----------------------------------------------------------------
commit 470722b48ea05e8267d95479f715193214359722
Author: Ricardo Signes <rjbs@cpan.org>
Date:   Tue Apr 24 20:51:22 2012 -0400

    perldelta: reimport the 5.15.x internals sections

M	Porting/perl5160delta.pod

commit 02750d385a647b4c16a86080079cf0837af81521
Author: Ricardo Signes <rjbs@cpan.org>
Date:   Tue Apr 24 20:46:38 2012 -0400

    perldelta: reimport the 5.15.x config/compile sections
    
    this catches a few things that were omitted; the reordering
    that resulted is neither intentional nor (as far as I can tell)
    significant

M	Porting/perl5160delta.pod

commit fd6d17ce2465f8ff51ada6e4b028e69143fe6637
Author: Ricardo Signes <rjbs@cpan.org>
Date:   Tue Apr 24 20:38:30 2012 -0400

    perldelta: add note about HP-UX gcc support

M	Porting/perl5160delta.pod
-----------------------------------------------------------------------

Summary of changes:
 Porting/perl5160delta.pod |  283 ++++++++++++++++++++++++++++++++++++++++-----
 1 files changed, 256 insertions(+), 27 deletions(-)

diff --git a/Porting/perl5160delta.pod b/Porting/perl5160delta.pod
index c3746bf..f8ff298 100644
--- a/Porting/perl5160delta.pod
+++ b/Porting/perl5160delta.pod
@@ -1541,11 +1541,6 @@ the compressed data stored in the zip file.
 
 =item *
 
-The C<-Dusesitecustomize> and C<-Duserelocatableinc> options now work
-together properly.
-
-=item *
-
 F<regexp.h> has been modified for compatibility with GCC's B<-Werror>
 option, as used by some projects that include perl's header files (5.14.1).
 
@@ -1565,25 +1560,68 @@ it.
 =item *
 
 The magic types and magic vtables are now generated from data in a new script
-F<regen/mg_vtable.pl>, instead of being
-maintained by hand.  As different EBCDIC
-variants can't agree on the code point for '~', the character to code point
-conversion is done at build time by F<generate_uudmap> to a new generated header
-F<mg_data.h>.  C<PL_vtbl_bm> and C<PL_vtbl_fm> are now defined by the
+F<regen/mg_vtable.pl>, instead of being maintained by hand.  As different
+EBCDIC variants can't agree on the code point for '~', the character to code
+point conversion is done at build time by F<generate_uudmap> to a new generated
+header F<mg_data.h>.  C<PL_vtbl_bm> and C<PL_vtbl_fm> are now defined by the
 pre-processor as C<PL_vtbl_regexp>, instead of being distinct C variables.
 C<PL_vtbl_sig> has been removed.
 
 =item *
 
-Building with C<-DPERL_GLOBAL_STRUCT>
-works again.  This configuration is not
+Building with C<-DPERL_GLOBAL_STRUCT> works again.  This configuration is not
 generally used.
 
 =item *
 
 Perl configured with I<MAD> now correctly frees C<MADPROP> structures when
-OPs are freed.  C<MADPROP>s are now allocated with
-C<PerlMemShared_malloc()>
+OPs are freed.  C<MADPROP>s are now allocated with C<PerlMemShared_malloc()>
+
+=item *
+
+F<makedef.pl> has been refactored.  This should have no noticeable affect on
+any of the platforms that use it as part of their build (AIX, VMS, Win32).
+
+=item *
+
+C<useperlio> can no longer be disabled.
+
+=item *
+
+The file F<global.sym> is no longer needed, and has been removed.  It
+contained a list of all exported functions, one of the files generated by
+F<regen/embed.pl> from data in F<embed.fnc> and F<regen/opcodes>.  The code
+has been refactored so that the only user of F<global.sym>, F<makedef.pl>,
+now reads F<embed.fnc> and F<regen/opcodes> directly, removing the need to
+store the list of exported functions in an intermediate file.
+
+As F<global.sym> was never installed, this change should not be visible
+outside the build process.
+
+=item *
+
+F<pod/buildtoc>, used by the build process to build L<perltoc>, has been
+refactored and simplified.  It now only contains code to build L<perltoc>;
+the code to regenerate Makefiles has been moved to F<Porting/pod_rules.pl>.
+It's a bug if this change has any material effect on the build process.
+
+=item *
+
+F<pod/roffitall> is now built by F<pod/buildtoc>, instead of being
+shipped with the distribution.  Its list of manpages is now generated
+(and therefore current).  See also RT #103202 for an unresolved related
+issue.
+
+=item *
+
+The man page for C<XS::Typemap> is no longer installed.  C<XS::Typemap>
+is a test module which is not installed, hence installing its
+documentation makes no sense.
+
+=item *
+
+The -Dusesitecustomize and -Duserelocatableinc options now work
+together properly.
 
 =back
 
@@ -1607,6 +1645,19 @@ further links.
 
 =back
 
+=head3 HP-UX
+
+=over 4
+
+=item *
+
+HP-UX PA-RISC/64 now supports gcc-4.x
+
+A fix to correct the socketsize now makes the test suite pass on HP-UX
+PA-RISC for 64bitall builds.
+
+=back
+
 =head3 VMS
 
 =over 4
@@ -1662,26 +1713,85 @@ without cc.
 
 =item *
 
-There are now feature bundle hints in C<PL_hints> (C<$^H>) that version
-declarations use, to avoid having to load F<feature.pm>.  One setting of
-the hint bits indicates a "custom" feature bundle, which means that the
-entries in C<%^H> still apply.  F<feature.pm> uses that.
+The compiled representation of formats is now stored via the C<mg_ptr> of
+their C<PERL_MAGIC_fm>. Previously it was stored in the string buffer,
+beyond C<SvLEN()>, the regular end of the string. C<SvCOMPILED()> and
+C<SvCOMPILED_{on,off}()> now exist solely for compatibility for XS code.
+The first is always 0, the other two now no-ops. (5.14.1)
 
-The C<HINT_FEATURE_MASK> macro is defined in F<perl.h> along with other
-hints.  Other macros for setting and testing features and bundles are in
-the new F<feature.h>.  C<FEATURE_IS_ENABLED> (which has moved to
-F<feature.h>) is no longer used throughout the codebase, but more specific
-macros, e.g., C<FEATURE_SAY_IS_ENABLED>, that are defined in F<feature.h>.
+=item *
+
+Some global variables have been marked C<const>, members in the interpreter
+structure have been re-ordered, and the opcodes have been re-ordered. The op
+C<OP_AELEMFAST> has been split into C<OP_AELEMFAST> and C<OP_AELEMFAST_LEX>.
 
 =item *
 
-F<lib/feature.pm> is now a generated file, created by the new
-F<regen/feature.pl> script, which also generates F<feature.h>.
+When empting a hash of its elements (e.g. via undef(%h), or %h=()), HvARRAY
+field is no longer temporarily zeroed.  Any destructors called on the freed
+elements see the remaining elements. Thus, %h=() becomes more like C<delete
+$h{$_} for keys %h>.
 
 =item *
 
-Tied arrays are now always C<AvREAL>.  If C<@_> or C<DB::args> is tied, it
-is reified first, to make sure this is always the case.
+Boyer-Moore compiled scalars are now PVMGs, and the Boyer-Moore tables are now
+stored via the mg_ptr of their C<PERL_MAGIC_bm>. Previously they were PVGVs,
+with the tables stored in the string buffer, beyond C<SvLEN()>. This eliminates
+the last place where the core stores data beyond C<SvLEN()>.
+
+=item *
+
+Simplified logic in C<Perl_sv_magic()> introduces a small change of
+behaviour for error cases involving unknown magic types. Previously, if
+C<Perl_sv_magic()> was passed a magic type unknown to it, it would
+
+=over
+
+=item 1.
+
+Croak "Modification of a read-only value attempted" if read only
+
+=item 2.
+
+Return without error if the SV happened to already have this magic
+
+=item 3.
+
+otherwise croak "Don't know how to handle magic of type \\%o"
+
+=back
+
+Now it will always croak "Don't know how to handle magic of type \\%o", even
+on read only values, or SVs which already have the unknown magic type.
+
+=item *
+
+The experimental C<fetch_cop_label> function has been renamed to
+C<cop_fetch_label>.
+
+=item *
+
+The C<cop_store_label> function has been added to the API, but is
+experimental.
+
+=item *
+
+F<embedvar.h> has been simplified, and one level of macro indirection for
+PL_* variables has been removed for the default (non-multiplicity)
+configuration. PERLVAR*() macros now directly expand their arguments to
+tokens such as C<PL_defgv>, instead of expanding to C<PL_Idefgv>, with
+F<embedvar.h> defining a macro to map C<PL_Idefgv> to C<PL_defgv>. XS code
+which has unwarranted chumminess with the implementation may need updating.
+
+=item *
+
+A C<coreargs> opcode has been added, to be used by C<&CORE::foo> subs to sort
+out C<@_>.
+
+=item *
+
+An API has been added to explicitly choose whether or not to export XSUB
+symbols.  More detail can be found in the comments for commit e64345f8.
 
 =item *
 
@@ -1703,6 +1813,125 @@ F<pad.c> has done its custom freeing of the pads).
 
 All the C files that make up the Perl core have been converted to UTF-8.
 
+=item *
+
+These new functions have been added as part of the work on Unicode symbols:
+
+    HvNAMELEN
+    HvNAMEUTF8
+    HvENAMELEN
+    HvENAMEUTF8
+    gv_init_pv
+    gv_init_pvn
+    gv_init_pvsv
+    gv_fetchmeth_pv
+    gv_fetchmeth_pvn
+    gv_fetchmeth_sv
+    gv_fetchmeth_pv_autoload
+    gv_fetchmeth_pvn_autoload
+    gv_fetchmeth_sv_autoload
+    gv_fetchmethod_pv_flags
+    gv_fetchmethod_pvn_flags
+    gv_fetchmethod_sv_flags
+    gv_autoload_pv
+    gv_autoload_pvn
+    gv_autoload_sv
+    newGVgen_flags
+    sv_derived_from_pv
+    sv_derived_from_pvn
+    sv_derived_from_sv
+    sv_does_pv
+    sv_does_pvn
+    sv_does_sv
+    whichsig_pv
+    whichsig_pvn
+    whichsig_sv
+    newCONSTSUB_flags
+
+The gv_fetchmethod_*_flags functions, like gv_fetchmethod_flags, are
+experimental and may change in a future release.
+
+=item *
+
+The following functions were added.  These are I<not> part of the API:
+
+    GvNAMEUTF8
+    GvENAMELEN
+    GvENAME_HEK
+    CopSTASH_flags
+    CopSTASH_flags_set
+    PmopSTASH_flags
+    PmopSTASH_flags_set
+    sv_sethek
+    HEKfARG
+
+There is also a C<HEKf> macro corresponding to C<SVf>, for
+interpolating HEKs in formatted strings.
+
+=item *
+
+C<sv_catpvn_flags> takes a couple of new internal-only flags,
+C<SV_CATBYTES> and C<SV_CATUTF8>, which tell it whether the char array to
+be concatenated is UTF8.  This allows for more efficient concatenation than
+creating temporary SVs to pass to C<sv_catsv>.
+
+=item *
+
+For XS AUTOLOAD subs, $AUTOLOAD is set once more, as it was in 5.6.0.  This
+is in addition to setting C<SvPVX(cv)>, for compatibility with 5.8 to 5.14.
+See L<perlguts/Autoloading with XSUBs>.
+
+=item *
+
+Perl now checks whether the array (the linearised isa) returned by a MRO
+plugin begins with the name of the class itself, for which the array was
+created, instead of assuming that it does.  This prevents the first element
+from being skipped during method lookup.  It also means that
+C<mro::get_linear_isa> may return an array with one more element than the
+MRO plugin provided [perl #94306].
+
+=item *
+
+C<PL_curstash> is now reference-counted.
+
+=item *
+
+There are now feature bundle hints in C<PL_hints> (C<$^H>) that version
+declarations use, to avoid having to load F<feature.pm>.  One setting of
+the hint bits indicates a "custom" feature bundle, which means that the
+entries in C<%^H> still apply.  F<feature.pm> uses that.
+
+The C<HINT_FEATURE_MASK> macro is defined in F<perl.h> along with other
+hints.  Other macros for setting and testing features and bundles are in
+the new F<feature.h>.  C<FEATURE_IS_ENABLED> (which has moved to
+F<feature.h>) is no longer used throughout the codebase, but more specific
+macros, e.g., C<FEATURE_SAY_IS_ENABLED>, that are defined in F<feature.h>.
+
+=item *
+
+F<lib/feature.pm> is now a generated file, created by the new
+F<regen/feature.pl> script, which also generates F<feature.h>.
+
+=item *
+
+Tied arrays are now always C<AvREAL>.  If C<@_> or C<DB::args> is tied, it
+is reified first, to make sure this is always the case.
+
+=item *
+
+Two new functions C<utf8_to_uvchr_buf()> and C<utf8_to_uvuni_buf()> have
+been added.  These are the same as C<utf8_to_uvchr> and
+C<utf8_to_uvuni> (which are now deprecated), but take an extra parameter
+that is used to guard against reading beyond the end of the input
+string.
+See L<perlapi/utf8_to_uvchr_buf> and L<perlapi/utf8_to_uvuni_buf>.
+
+=item *
+
+The regular expression engine now does TRIE case insensitive matches
+under Unicode. This may change the output of C<< use re 'debug'; >>,
+and will speed up various things.
+
 =back
 
 =head1 Selected Bug Fixes

--
Perl5 Master Repository

• [perl.git] branch blead, updated. v5.15.9-240-g470722b by Ricardo Signes