develooper Front page | perl.perl5.changes | Postings from March 2021

[Perl/perl5] 076b02: XXX craig Unixish.h, doshish.h: Reorderterminatio...

From:
Karl Williamson via perl5-changes
Date:
March 21, 2021 03:41
Subject:
[Perl/perl5] 076b02: XXX craig Unixish.h, doshish.h: Reorderterminatio...
Message ID:
Perl/perl5/push/refs/heads/smoke-me/khw-locale/12ea85-80493a@github.com
  Branch: refs/heads/smoke-me/khw-locale
  Home:   https://github.com/Perl/perl5
  Commit: 076b020ef5a3c3433efb8501fdd0b7218264998a
      https://github.com/Perl/perl5/commit/076b020ef5a3c3433efb8501fdd0b7218264998a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M dosish.h
    M unixish.h

  Log Message:
  -----------
  XXX craig Unixish.h, doshish.h: Reorder terminations; simplify

The IO and memory terminations need to be after other things.  Add a
comment so that future maintainers won't make the mistakes I did.

Also refactor to that amiga os doesn't have a separate list to get out
of sync

I suspect that the amiga termination should be moved to earlier in
the sequence, but absent any evidence; I'm leaving it unchanged.


  Commit: 724e35ebb3eb52cf3e75ca1e96bb96d6caf885d2
      https://github.com/Perl/perl5/commit/724e35ebb3eb52cf3e75ca1e96bb96d6caf885d2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Win32: Don't check folds validity

This code will check, when warnings are on, that the libc functions
return valid values.  But Windows platforms will always fail because
they have multiple divergences from the Posix standard.  The macros that
implement the case changing/folding in handy.h take extra steps to bring
Windows code more into alignment with Posix.  Those are too complicated
to easily duplicate the logic here.  The result of these checks is
looked at by our test suite, which has long, without anyone noticing,
skipped portions on Windows, even though handy.h should correct for
this.  So simply, don't do the checking under Windows, and find out what
handy.h has failed to fully correct for.


  Commit: ce459aab96eb30bd4dbc3a0cb65403f14c985ae6
      https://github.com/Perl/perl5/commit/ce459aab96eb30bd4dbc3a0cb65403f14c985ae6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M lib/locale_threads.t

  Log Message:
  -----------
  XXX locale_threads


  Commit: 7e520f947e808feb4150b4def4f7ce61a92b02bb
      https://github.com/Perl/perl5/commit/7e520f947e808feb4150b4def4f7ce61a92b02bb
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  DEBUG_L now also looks at environment variable

Because locale initialization happens before command line processing,
one can't pass a -DL argument to enable debugging of locale
initialization.  Instead, an environment variable is read then, and is
used to enable debugging or not.  In the past, code specifically had to
test for this being set.  This commit changes that so that debugging can
automatically be enabled without having to write special code.  Future
commits will strip out those special checks.


  Commit: 23068427a2d0ce8c5409dac933e2d9a2a4447b07
      https://github.com/Perl/perl5/commit/23068427a2d0ce8c5409dac933e2d9a2a4447b07
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Replace most #ifdef DEBUGGING lines

THe previous commit enhanced the DEBUG macros so that they contain the
logic that previously had to be done with conditional compilation
statements.  Removing them makes the code easier to read.


  Commit: 16ddc736d4888d6e51929858df526b4e19d0255d
      https://github.com/Perl/perl5/commit/16ddc736d4888d6e51929858df526b4e19d0255d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h
    M numeric.c
    M regcomp.c
    M regexec.c
    M utfebcdic.h

  Log Message:
  -----------
  Change handy.h macro names to be C standard conformant

C reserves symbols beginning with underscores for its own use.  This
commit moves the underscore so it is trailing, which is legal.  The
symbols changed here are most of the ones in handy.h that have few uses
outside it.


  Commit: fe4dff4fbf7df0cea469a65ba7b21d67c0e44b8f
      https://github.com/Perl/perl5/commit/fe4dff4fbf7df0cea469a65ba7b21d67c0e44b8f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Remove only 2 calls to an internal macro

Replace isIDFIRST_LC and isWORD_CHAR_LC isIDFIRST_LC  with slightly
faster implementations.


  Commit: 86eaf29bcc664be2724d6730d1971f2a5a72d680
      https://github.com/Perl/perl5/commit/86eaf29bcc664be2724d6730d1971f2a5a72d680
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Refactor some #ifdef's for commonality

This changes these compilation conditionals so that things in common
between Windows and other platforms are only defined once.

It changes the isIDFIRST_LC and isWORDCHAR_LC definitions for
non-Windows to match that platform superficially, though expanding to
what it previously did to.


  Commit: dc4694cb4429fdf70f8f114645497ec2e93a7079
      https://github.com/Perl/perl5/commit/dc4694cb4429fdf70f8f114645497ec2e93a7079
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Add some branch predictions


  Commit: 96efe2d009704b4082ffaddee03a10445147b40e
      https://github.com/Perl/perl5/commit/96efe2d009704b4082ffaddee03a10445147b40e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: White-space, comment only


  Commit: 007d96d1d97a83544b57a50e3cbdd63dbdee5b7e
      https://github.com/Perl/perl5/commit/007d96d1d97a83544b57a50e3cbdd63dbdee5b7e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M charclass_invlists.h
    M handy.h
    M l1_char_class_tab.h
    M lib/unicore/uni_keywords.pl
    M perl.c
    M perl.h
    M regcomp.c
    M regcomp.h
    M regen/mk_PL_charclass.pl
    M regexec.c
    M sv.c
    M uni_keywords.h
    M utfebcdic.h

  Log Message:
  -----------
  Change handy.h macro names to be C standard conformant

C reserves symbols beginning with underscores for its own use.  This
commit moves the underscore so it is trailing, which is legal.  The
symbols changed here are many of the ones in handy.h that have
significant uses outside it.


  Commit: 72fc629b88bb1a0d1da02420c13cdd7ad9ac402d
      https://github.com/Perl/perl5/commit/72fc629b88bb1a0d1da02420c13cdd7ad9ac402d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Rmv internal macro

LC_CAST_ was my attempt at generality, but I didn't realize that the
POSIX standard specifies the type that this was meant to generalize, so
there isn't any need for it.


  Commit: 1e3aeac5b34ae54c1ad148815192a0808b497e9a
      https://github.com/Perl/perl5/commit/1e3aeac5b34ae54c1ad148815192a0808b497e9a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Refactor some internal macros

This changes the parameters etc, in preparation for further changes


  Commit: 1c03552c99461fdcc1e0e79d1ad4ab36a679da88
      https://github.com/Perl/perl5/commit/1c03552c99461fdcc1e0e79d1ad4ab36a679da88
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Rmv unnecessary parameter to internal macros

The cast is required to be U8 by the POSIX standard.  There is no need
to have this added generality.


  Commit: 55e259ce909521e7a79dc4594c39b6aaa7f8bbd7
      https://github.com/Perl/perl5/commit/55e259ce909521e7a79dc4594c39b6aaa7f8bbd7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: #define one macro in terms of another

These two macros are equivalent as folding and lowercasing are the same
for this input domain.  Better to say so rather than to replicate the
definitions.


  Commit: c5d8ab1439b60882c48916f8df61080cd550a024
      https://github.com/Perl/perl5/commit/c5d8ab1439b60882c48916f8df61080cd550a024
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Add wrapper layer macros for isalnum() ...

This adds a new set of macros, forming a lower layer to what is currently
there to wrap the character classification libc functions, isdigit()
etc, and case changing ones, tolower(), toupper().

On most platforms these expand simply to the libc function call.  But on
windows, they expand to something more complex, to bring the Windows
calls into POSIX compliance.  Previously that was achieved at the higher
level, with the result that lower level calls were broken.  This
resulted in parts of the test suite being skipped on Windows.

The current level is rewritten to use the new lower layer, with the
result that it is simpler, as the complexity is now done further down.

I thought about calling these macros is_porcelain_isalnum or something
similar to emphaisze that they are close to the bare libc version, but
thought isU8_alnum() is shorter and conveys another truth, that being
the input is assumed to be a byte, without checking.


  Commit: 197d586971d1b980b2a64f7b9f6a7b5edb9d615a
      https://github.com/Perl/perl5/commit/197d586971d1b980b2a64f7b9f6a7b5edb9d615a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M vms/vms.c

  Log Message:
  -----------
  locale.c: Use new macros from the prev commit

This should result in Windows boxes now passing the locale sanity
checks.  Previously that failure would cause the test suite tests to be
skipped, and warnings generated to Windows users that actually were
invalid, as the flaws were actually compensated for in other code.


  Commit: 5086a9d1be0700a455b0f4304ea1d750c8d349d6
      https://github.com/Perl/perl5/commit/5086a9d1be0700a455b0f4304ea1d750c8d349d6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  XXX SEE IF WORKS handy.h: Change Windows macros


  Commit: 510da36e17f70f20715e398b9807deff49d75ec6
      https://github.com/Perl/perl5/commit/510da36e17f70f20715e398b9807deff49d75ec6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M handy.h

  Log Message:
  -----------
  handy.h: Add isCASED_LC

As a convenience to other code.


  Commit: 702d3309586e4b7bd725f8a0ff831e6badd77751
      https://github.com/Perl/perl5/commit/702d3309586e4b7bd725f8a0ff831e6badd77751
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M regexec.c

  Log Message:
  -----------
  regexec.c: Improve code

These case statements in a switch all had the same prelude for checking
if the locale is UTF-8 and handling that case separately.  A few commits
ago created macros closer to the base level.  This commit factors out
the common UTF-8 handling, and then puts the lower lever things in the
switch().  Perhaps the C optimizer will be smart enough to do this too,
but we might as well do it ourselves, now that it is convenient.


  Commit: b2d8f47e25ff228dee01b037b80db6b4ae97ab1b
      https://github.com/Perl/perl5/commit/b2d8f47e25ff228dee01b037b80db6b4ae97ab1b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M regexec.c

  Log Message:
  -----------
  regexec.c: Refactor switch default()

It seems clearer to me to have the panic at the end of the routine
instead of as the default: of a switch().


  Commit: 33bbe34cd695b2e30b9601d34c34bdb173ba2c69
      https://github.com/Perl/perl5/commit/33bbe34cd695b2e30b9601d34c34bdb173ba2c69
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Declare three static arrays to be so.


  Commit: a8bb9683d00c94bd8e0e5a310518f004a42d310b
      https://github.com/Perl/perl5/commit/a8bb9683d00c94bd8e0e5a310518f004a42d310b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  Move some locale.c #defines to perl.h

This is in preparation for them to be used in macros from outside
locale.c


  Commit: 0994ee074b8fccffcc35d14fba3764545513bb72
      https://github.com/Perl/perl5/commit/0994ee074b8fccffcc35d14fba3764545513bb72
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  Mark newly moved symbols as private

The previous commit made certain symbols that previously were local to
locale.c now available everywhere.  Add a trailing underscore to their
names to mark them as private.


  Commit: 9c04c09f02fcdebbd44b5565f3c35d4c3e8a709e
      https://github.com/Perl/perl5/commit/9c04c09f02fcdebbd44b5565f3c35d4c3e8a709e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M makedef.pl
    M perl.h

  Log Message:
  -----------
  Add USE_LOCALE_THREADS #define

This is in preparation for supporting configurations where there threads
are available, but the locale handling code should ignore that fact.

This stems from the unusual locale handling of z/OS, where any attempt
is ignored to change locales after the first thread is created.


  Commit: a8619e72820cd196bf96cfa15faa85a354b168ea
      https://github.com/Perl/perl5/commit/a8619e72820cd196bf96cfa15faa85a354b168ea
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs
    M ext/POSIX/lib/POSIX.pm
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.c
    M perl.h
    M sv.c

  Log Message:
  -----------
  Regularize HAS_POSIX_2008_LOCALE, USE_POSIX_2008_LOCALE

A platform shouldn't be required to use the Posix 2008 locale handling
functions if they are present.  Perhaps they are buggy.  So, a separate
define for using them was introduced, USE_POSIX_2008_LOCALE.  But until
this commit there were cases that were looking at the underlying
availability of the functions, not if the Configuration called for their
use.


  Commit: 3f3b2de8724434d4f7626313b7dc569e5e8b15df
      https://github.com/Perl/perl5/commit/3f3b2de8724434d4f7626313b7dc569e5e8b15df
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Change macro name

Adopt the git convention of 'porcelain' meaning without special
handling.  This makes it clear that porcelain_setlocale() is the base
level.


  Commit: 196ed1ddb4fbdb74e4c57e36298e47bc855f0798
      https://github.com/Perl/perl5/commit/196ed1ddb4fbdb74e4c57e36298e47bc855f0798
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Cast return of setlocale() to const

If they had it to do over again, the libc makers would have made the
return of this function 'const char *'.  We can cast it that way
internally to catch erroneous uses at compile time.


  Commit: 82d1e6c388cef7fd10d5c89ad901a51cd9aa9838
      https://github.com/Perl/perl5/commit/82d1e6c388cef7fd10d5c89ad901a51cd9aa9838
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Create S_get_category_index()

libc locale categories, like LC_NUMERIC, are opaque integers.  This
makes it inconvenient to have table-driven code.  Instead, we have
tables that are indexed by small positive integers, which are a
compile-time mapping from the libc values.

This commit creates a run-time function to also do that mapping.  It
will first be used in the next commit.

The function does a loop through the available categories, looking for a
match.  It could be replaced by some sort of quick hash lookup, but the
largest arrays in the field have a max of 12 elements, with almost all
searches finding their quarry in the first 6.  It doesn't seem
worthwhile to me to replace a linear search of 6 elements by something
more complicated.  The design intent is this search will be used only at
the edges of the locale-handling code; once found the index is used in
future bits of the current operation.


  Commit: 3515a5688b7806605bb147e9dbffd3fd6b614284
      https://github.com/Perl/perl5/commit/3515a5688b7806605bb147e9dbffd3fd6b614284
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Use get_category_index()

This creates the first uses of the function added in the previous commit.

It changes the name of a function that now takes an index to have the
suffix _i to indicate its calling parameter is a category index rather
than a category.  This will become a common paradigm in this file in
later commits.

Two macros are also created to call that function; they have suffixes _c
(to indicate the parameter is a category known at compile time, and _r
(to indicate it needs to be computed at runtime).  This is in keeping
with the already existing paradigm in this file.


  Commit: 44dabf151b0a40c5075b497676553a83814f37aa
      https://github.com/Perl/perl5/commit/44dabf151b0a40c5075b497676553a83814f37aa
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Change S_emulate_setlocale name and sig

It turns out this function is called only from places where we have the
category index already computed; so change the signature to use the
index and remove the re-calculation.

It renames it to emulate_setlocale_i() to indicate that the category
parameter is an index.

This also means, that it's very unlikely that it will be called with an
out-of-bounds value.  Remove the debugging statement for that case (but
retain the error return value).


  Commit: 47af2badbcd1ddf6e9d7bca60790e2ebb77fc3ed
      https://github.com/Perl/perl5/commit/47af2badbcd1ddf6e9d7bca60790e2ebb77fc3ed
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use nocontext; avoid rarely needed dTHX

This is a rare case; no point in doing a dTHX just for it.


  Commit: 3c8a7564acad6759adbd5af2f83ad0dbb77cb7af
      https://github.com/Perl/perl5/commit/3c8a7564acad6759adbd5af2f83ad0dbb77cb7af
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M pod/perldelta.pod
    M pod/perldiag.pod

  Log Message:
  -----------
  locale.c: Simplify S_category_name

We can use the new function S_get_category_index() to simplify this.
Also, when I wrote it I didn't know about Perl_form(), and had
reimplemented a portion of it here; which is yanked as well.


  Commit: 5b82fcf5684455fe5843ea2b1e0a7ef471ce2e9b
      https://github.com/Perl/perl5/commit/5b82fcf5684455fe5843ea2b1e0a7ef471ce2e9b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Move unreachable code

It turns out this code, setting errno, is unreachable.  Move it to the
place where it would do some good, removing an extraneous, unreachable
return;


  Commit: edce69e1fcd17446061e4591d0f78fc7a7655c26
      https://github.com/Perl/perl5/commit/edce69e1fcd17446061e4591d0f78fc7a7655c26
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Comment clarifications, white space

Some of these are to make future difference listings shorter

Some of the changes look like incorrect indentation here, but anticipate
future commits.


  Commit: 85d5eca0046969382da24043bf1d8e0e3f085e04
      https://github.com/Perl/perl5/commit/85d5eca0046969382da24043bf1d8e0e3f085e04
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Separate query part of emulate_setlocale()

This splits a large function so that it is easier to comprehend, and is
in preparation for them to be separately callable.


  Commit: bc48940120dd93eef0355d76d2c96218aaf2b5f5
      https://github.com/Perl/perl5/commit/bc48940120dd93eef0355d76d2c96218aaf2b5f5
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Remove spaces around a '##' preprocessor directive

It turns out that at least my gcc preprocessor gets confused in some
contexts if spaces surround the ##.  CAT2() doesn't work for these.

It is working in this context, but future commits will introduce ones
where it won't, so this commit will help make things consistent within
this file

What seems to fail is #define f(x) (..., g(x ## y), ...) where 'x' is a
an already #defined symbol.  I want 'xy', but instead, for example if
'x' has been defined to be 1, I get '1y'


  Commit: f8452df970fe6bde7b832ab228a5e18e098ff6c5
      https://github.com/Perl/perl5/commit/f8452df970fe6bde7b832ab228a5e18e098ff6c5
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: #define some macros in terms of a base one

This is so changes to the lowest level automatically propagate to the
others


  Commit: 28460367414184f502e347bdddac44697ef4b911
      https://github.com/Perl/perl5/commit/28460367414184f502e347bdddac44697ef4b911
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Create new macros for just querying locale

There are two sets of names, which immediately indicate if the result
can be relied on to be thread level or must be assumed to be global to
the whole process.  At the moment they all expand to the same thing,
since on a threadless perl, it's a don't care; and on a threaded perl,
they are all already thread-level, in the Configurations we support.

Future commits will cause the macros to diverge, and comments will be
added then.

For POSIX 2008, this commit causes queries to go directly to the query
function, avoiding S_emulate_setlocale_i() completely.


  Commit: 08bb262e5ce91359b6f53ef7056d1812202c53fb
      https://github.com/Perl/perl5/commit/08bb262e5ce91359b6f53ef7056d1812202c53fb
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Generalize certain Win32 calls

The old versions were windows-specific; the changes use a more generic
macro that currently expands to the same thing, but future commits will
change that.


  Commit: b22f4f197cf509ee57b13935c0d82808b7791645
      https://github.com/Perl/perl5/commit/b22f4f197cf509ee57b13935c0d82808b7791645
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add a convenience #define

This makes it clear if we are using an array that currently only happens
on non-querylocale systems, but that will change in future commits.


  Commit: 3979f5c231c8735beae9ea48cb60f293ab3b9be9
      https://github.com/Perl/perl5/commit/3979f5c231c8735beae9ea48cb60f293ab3b9be9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add setlocale() return context macros

Future commits will benefit from knowing if the return value of
setlocale is to be ignored, just checked for if it worked, or the full
value is needed and can be relied on (or not) to be per-thread.


  Commit: de7d2e2cc76d82eb37921e6bb20c194ef41d37d6
      https://github.com/Perl/perl5/commit/de7d2e2cc76d82eb37921e6bb20c194ef41d37d6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add panic check/message

This panic is done when a setlocale unexpectedly fails.


  Commit: e0918555016617a9dc7c2921505d569de36e4c17
      https://github.com/Perl/perl5/commit/e0918555016617a9dc7c2921505d569de36e4c17
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Use a function table to simplify code

Some locale categories require extra steps when they are changed.  This
moves that logic to a table, which gets rid of some code


  Commit: 07fb5fe70193215c8d717efe8dffc7f7421bfe08
      https://github.com/Perl/perl5/commit/07fb5fe70193215c8d717efe8dffc7f7421bfe08
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Perl_setlocale(): Same code for all param2 == NULL

Calling Perl_setlocale() with a NULL 2nd parameter returns the current
locale, rather than changing it.  Previously LC_NUMERIC and LC_ALL were
treated specially; other categories were lumped in with the code that
changes the locale.

Changing some categories involves a non-trivial amount of work.  This
commit avoids that by moving all queries to the same 'if' branch.
LC_NUMERIC and LC_ALL still have to be treated specially, but now it's
all within the same outer 'if', and the unnecessarily executing code
for when the locale changes is avoided.


  Commit: 6680f1a7d201b98af5bda3b856a945bbaa187c7e
      https://github.com/Perl/perl5/commit/6680f1a7d201b98af5bda3b856a945bbaa187c7e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use low level macros at low level

Implementing Perl_setlocale, we can safely use the internal macros that
the public ones expand to call, without the overhead those public macros
impose (which they do to be more immune from improper calls from outside
code).


  Commit: a1dcf6f1d490ee9e070f95930a98b7cddf98fe1b
      https://github.com/Perl/perl5/commit/a1dcf6f1d490ee9e070f95930a98b7cddf98fe1b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Remove exploratory code

This code was to find out, in debugging builds, if an undocumented glibc
feature worked.  There were no reports that it didn't, and so, after,
several releases, it has served its purpose.  A future commit will allow
enabling this feature as a Configuration option.


  Commit: 8f6e7402346452eef76108933e1794b57c9b2a61
      https://github.com/Perl/perl5/commit/8f6e7402346452eef76108933e1794b57c9b2a61
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Expand scope of cpp conditional

This just doesn't bother with checking some locale-related stuff if not
paying attention to locales.


  Commit: 49cfc592e19618b113db0e1977b3dc53ed23369e
      https://github.com/Perl/perl5/commit/49cfc592e19618b113db0e1977b3dc53ed23369e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  locale.c: Create new convenience macro

glibc doesn't have the querylocale() function, available on some other
platforms, such as Darwin and *BSD.  However, it instead has the
equivalent functionality available through an undocumented feature.

This commit allows someone in the know to compile perl to use that
feature, and wraps its API with a macro so that the calling code doesn't
have to be aware of the different APIs of the two methods.

That macro's definition is now done in perl.h, as future commits will
use it in other files.

Since this is an undocumented feature, I am not currently documenting
this wrapper availability.  However, it has been used in the field
without complaint for a couple of releases, as follows:  A more
cumbersome substitute method continues to be used to get what it does.
But in the past both methods were tried and the program died if they
yielded different results.  Since no one has complained, I'm fairly
confident it works.  But sill I'm deferring its more general use.


  Commit: 130d29d118adde7ffbf6359f0536415fdb6abd09
      https://github.com/Perl/perl5/commit/130d29d118adde7ffbf6359f0536415fdb6abd09
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M intrpvar.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: querylocale() doesn't work on LC_ALL

I had misread the man pages.  This bug has been in the field for several
releases now, but most likely hasn't shown up because it's almost always
the case that the locale categories will be set to the same locale.  And
so most implementations of querylocale() would return the correct
result.

This commit works by splitting the calculation of the value of LC_ALL
from S_emulate_setlocale_i() into a separate function, and extending it
to work on querylocale() systems.  This has the added benefit of
removing tangential code from the main line, making
S_emulate_setlocale_i easier to read.

calculate_LC_ALL() is the new function, and is now called from two
places.  As part of this commit, constness is added to PL_curlocales[]

Part of this change is to keep our records of LC_ALL on non-querylocale
systems always up-to-date, which is better practice

And part of this change is temporary, marked as such, to be removed a
few commits later.


  Commit: 2aa7683c34130339817792b40a416d3fc646be47
      https://github.com/Perl/perl5/commit/2aa7683c34130339817792b40a416d3fc646be47
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use setlocale() for init, not P2008

We have found bugs in the POSIX 2008 libc implementations on various
platforms.  This code, which does the initialization of locale handling
has always been very conservative, expecting possible failures due to
bugs in it our the libc implementations, and backing out if necessary to
a crippled, but workable state, if something goes wrong.

I think we should use the oldest, most stable locale implementation in
these circumstances


  Commit: 56474360b8a9cecd91d3cb8e870afca45b0d87b1
      https://github.com/Perl/perl5/commit/56474360b8a9cecd91d3cb8e870afca45b0d87b1
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Split aggregate LC_ALL from emulate_setlocale

This splits into a separate function the code necessary in some
Configurations to calculate LC_ALL from a potentially disparate
aggregate of categories having different locales.

This is being done just for readability, as this extensive code in the
middle of something else distracts from the main point.

A goto is hence replaced by a recursive call.


  Commit: ff5ca634780b8aa1db1af160c6879c08420f6eec
      https://github.com/Perl/perl5/commit/ff5ca634780b8aa1db1af160c6879c08420f6eec
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Change internal variable name

The new name better reflects its purpose, so is less confusing


  Commit: b0039a5538f28cc08f25cec08e1ca49606c60986
      https://github.com/Perl/perl5/commit/b0039a5538f28cc08f25cec08e1ca49606c60986
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Clean up handling of a glibc bug

This commit moves all mention of this bug to just the code that requires
it, and inlines a macro, making it easier to comprehend


  Commit: 81c80b268e4860eb2d5a72848050ca5a25462735
      https://github.com/Perl/perl5/commit/81c80b268e4860eb2d5a72848050ca5a25462735
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Split ancillary from S_emulate_setlocale

This takes the code to update LC_ALL, used only in some Configurations,
out of the main line, making the main line more readable.

It also allows the removal of temporary code added a few commits back


  Commit: 7601f7d46a1305db6bbe03288b11ff101afe627f
      https://github.com/Perl/perl5/commit/7601f7d46a1305db6bbe03288b11ff101afe627f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: locale "" can be disparate

Setting a locale "" means to get the value from environment variables.
These can set locale categories to different locales, and this needs to
be handled.  The logic before this commit only handled the disparate
case when the locale wasn't ""; but this was compensated for elsewhere.
A future commit will remove that compensation.


  Commit: 12d1d8d5ef0ace46ea792f29b8c50a9a09439f2d
      https://github.com/Perl/perl5/commit/12d1d8d5ef0ace46ea792f29b8c50a9a09439f2d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  Split off setting locale to "" from S_emulate_setlocale

This is done for readability, to move the special casing of setting a
locale to the empty string (hence getting it from the environment) out
of the main line code.


  Commit: 60fad6fbc3018317c3a468afec7d5f4ebf1830a8
      https://github.com/Perl/perl5/commit/60fad6fbc3018317c3a468afec7d5f4ebf1830a8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M sv.c

  Log Message:
  -----------
  sv.c: Duplicate more variables during cloning

These locale-related ones should be getting initialized in the new
thread, but be certain.


  Commit: bf94e0f13284090c5bda2dc332705fd4d8aadd03
      https://github.com/Perl/perl5/commit/bf94e0f13284090c5bda2dc332705fd4d8aadd03
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M embedvar.h
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.c
    M proto.h
    M sv.c

  Log Message:
  -----------
  locale.c: Add fcn to hide edge case undefined behavior

The POSIX 2008 API has an edge case in that the result of most of the
functions when called with a global (as opposed to a per-thread) locale
is undefined.

The duplocale() function is the exception which will create a per-thread
locale containing the values copied from the global one.

This commit just calls duplocale, if needed, and the caller need not
concern itself with this possibility


  Commit: 2ebce8ee8208a99de29f79a21bc9a1c0d727c27c
      https://github.com/Perl/perl5/commit/2ebce8ee8208a99de29f79a21bc9a1c0d727c27c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add DEBUGGING information

These functions are called as expansions of macros.  It may be useful to
know where in the file the macro occurred.


  Commit: 2f3b956b098bc7f2731c4d85a3b96576e65c766b
      https://github.com/Perl/perl5/commit/2f3b956b098bc7f2731c4d85a3b96576e65c766b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Separate out two Win fcns from a larger one

This makes the larger one easier to understand, and prepares for
possible independent calls to the two, which are potentially useful on
their own.


  Commit: e6353ee100f3d7f786a42855396f3a620db493c0
      https://github.com/Perl/perl5/commit/e6353ee100f3d7f786a42855396f3a620db493c0
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs

  Log Message:
  -----------
  POSIX.xs: Use macro to reduce complexity

This #defines a macro and uses it to populate a structure, so that
strings don't have to be typed twice.


  Commit: 37a2509573d7b3e051d1e72d138be06ad1ea0f13
      https://github.com/Perl/perl5/commit/37a2509573d7b3e051d1e72d138be06ad1ea0f13
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs

  Log Message:
  -----------
  POSIX.xs: White-space only

Properly indent some nested preprocessor directives


  Commit: 5f1c2a39f33098e5fdd5516dee303633172b3a9b
      https://github.com/Perl/perl5/commit/5f1c2a39f33098e5fdd5516dee303633172b3a9b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M ext/POSIX/POSIX.xs
    M locale.c
    M proto.h

  Log Message:
  -----------
  Move code from POSIX.xs to locale.c

This avoids duplicated logic.


  Commit: 8b8d73f51501bb22a9e1032c0a21de2b90c66cfd
      https://github.com/Perl/perl5/commit/8b8d73f51501bb22a9e1032c0a21de2b90c66cfd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Reorder cases in a switch

This moves handling the CODESET to the end, as future commits will make
its handling more complicated.  The cases are now ordered so the
simplest (based on the direction of future commits) are first


  Commit: d3f9c33d31d1cdda2a91c8c85927eb5900db0afe
      https://github.com/Perl/perl5/commit/d3f9c33d31d1cdda2a91c8c85927eb5900db0afe
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Make statics of repeated string constants

These strings are (or soon will be) used in multiple places; so have
just one definition for them.


  Commit: 298ce33ebc0c70002fea59d0a1b3756984fac3c5
      https://github.com/Perl/perl5/commit/298ce33ebc0c70002fea59d0a1b3756984fac3c5
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add two #defines

This makes sure that we handle having any variant of nl_langinfo() or
localeconv().


  Commit: 8772e111bda65dbae71f04d8859f0932767665ad
      https://github.com/Perl/perl5/commit/8772e111bda65dbae71f04d8859f0932767665ad
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Return defaults for uncomputable langinfo items

Return the values from the C locale for nl_langinfo() items that aren't
computable on this platform.  If the platform has nl_langinfo(), then
all of them are computable, but if not, some can't be computed, and
others can be, but only if there are alternative methods available on
the platform.

As part of this commit, S_my_nl_langinfo() and S_save_to_buffer() are no
longer used when USE_LOCALE is not defined, so don't compile them.


  Commit: a06a2338226978018118adc4b4720fcbcbd24081
      https://github.com/Perl/perl5/commit/a06a2338226978018118adc4b4720fcbcbd24081
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Rmv reimplementation of my_strftime()

Prior to this commit, there was a near duplicate copy of the code from
util.c that implements my_strftime().  This was done because the util.c
version zaps the wday field, which made it incompatible.

But it dawned on me that if the arbitrary date we use to do our
calculations were such that it was for a year in which January 1 falls
on a Sunday, then the util.c version automatically works.


  Commit: 7eedde17575694bfbba0a97369254630bcf6d959
      https://github.com/Perl/perl5/commit/7eedde17575694bfbba0a97369254630bcf6d959
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Shorten static function name

The extra syllable(s) are unnecessary noise


  Commit: 8bf08248c7b5bc443c06d2994603765724888a51
      https://github.com/Perl/perl5/commit/8bf08248c7b5bc443c06d2994603765724888a51
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Extend a static function

This will allow it to be used in situations where the buffer it controls
is single use, and we don't need to keep track of the size for future
calls.


  Commit: 6843a578fe4953c0c008d85a66057ca8a395a34b
      https://github.com/Perl/perl5/commit/6843a578fe4953c0c008d85a66057ca8a395a34b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use typedef to simplify

This allows some preprocessor conditionals to be removed


  Commit: 0fb2186006a1ee8c8ffca7f3077cac3d4f78cd26
      https://github.com/Perl/perl5/commit/0fb2186006a1ee8c8ffca7f3077cac3d4f78cd26
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Rmv redundant cBOOL()

strEQ and && already return booleans


  Commit: d931d6c078fffdff766aa0e7462e24fed3a65590
      https://github.com/Perl/perl5/commit/d931d6c078fffdff766aa0e7462e24fed3a65590
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Fix currency symbol derivation

On platforms without nl_langinfo(), we derive the currency symbol from
localeconv().  The symbol must be tweaked to conform to nl_langinfo()
standards.  Prior to this commit, it guessed at how to tweak a rare
circumstance.  I now have seen evidence this guess was wrong, so give up
on it.

This also no longer returns just an empty string in certain cases.
nl_langinfo() itself doesn't, so conform to that.


  Commit: e88a46922e9939b876a8330b64e48748b5856b5e
      https://github.com/Perl/perl5/commit/e88a46922e9939b876a8330b64e48748b5856b5e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Don't add CP to Windows code page names

The actual name appears to be just the number for purposes of
nl_langinfo()-ish things.


  Commit: 7937fe1d9d8cdcd9033eaa8dcaef330905c6f3e9
      https://github.com/Perl/perl5/commit/7937fe1d9d8cdcd9033eaa8dcaef330905c6f3e9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Don't ask a static fcn to be inlined

It's too complicated to really be inlined, and the compiler can figure
things out itself given it is a static function


  Commit: 961f542a149c8391e0a9a7a2b92ba5ebe70995f8
      https://github.com/Perl/perl5/commit/961f542a149c8391e0a9a7a2b92ba5ebe70995f8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Rmv no longer used param from static fnc

Previous commits have gotten rid of this parameter to S_save_to_buffer


  Commit: 6deb65bafba1dc4dc22514d6e3b2e1bb04e81c36
      https://github.com/Perl/perl5/commit/6deb65bafba1dc4dc22514d6e3b2e1bb04e81c36
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Don't change locale if already there

Changing the locale is cheap for some categories, but expensive for
others.  Changing LC_COLLATE is most expensive, requiring recalculation
of the collation transformation mapping.

This commit checks that we aren't already in the desired locale before
changing locales. and does nothing if no change is needed.


  Commit: c9f74dbb0ca408149bc44932b3725d281e27d40f
      https://github.com/Perl/perl5/commit/c9f74dbb0ca408149bc44932b3725d281e27d40f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M intrpvar.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  Make three locale PL_ strings const char*

This adds some compile safety to these.


  Commit: b9486d839a1f20f12530676ec352cd4f6b908206
      https://github.com/Perl/perl5/commit/b9486d839a1f20f12530676ec352cd4f6b908206
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use a scratch buf; instead of resuing old

This is in preparation for the next commit


  Commit: 6278ea99e6f6bdd5d46fa3d0e51e0e63d7acc73c
      https://github.com/Perl/perl5/commit/6278ea99e6f6bdd5d46fa3d0e51e0e63d7acc73c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Make static fcn reentrant

This makes my_langinfo() reentrant by adding parameters specifying where
to store the result.

This prepares for future commits, and fixes some minor bugs for XS
writers, in that the claim was that the buffer in calling
Perl_langinfo() was safe from getting zapped until the next call to it
in the same thread.  It turns out there were cases where, because of
internal calls, the buffer did get zapped.


  Commit: de3b1d891d8f0ce6e46c7fb54444b046f2e0ad04
      https://github.com/Perl/perl5/commit/de3b1d891d8f0ce6e46c7fb54444b046f2e0ad04
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: langinfo: Use Windows fcn to find CODESET

There is a Windows function, available for quite a long time, that will
return the current code page.  Use this for the nl_langinfo() CODESET,
as that libc function isn't implemented on Windows.


  Commit: ead9faedde005adb086ff7f77cd3249808ea1d12
      https://github.com/Perl/perl5/commit/ead9faedde005adb086ff7f77cd3249808ea1d12
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add static fcn to analyze locale codeset

It determines if the name indicates it is UTF-8 or not.  There are
several variant spellings in use, and this hides that from the the
callers.

It won't be actually used until the next commit


  Commit: b66017b923b1489ebc3cbd2c157f590f59888337
      https://github.com/Perl/perl5/commit/b66017b923b1489ebc3cbd2c157f590f59888337
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M ext/I18N-Langinfo/Langinfo.pm
    M locale.c

  Log Message:
  -----------
  locale.c: Improve non-nl_langinfo() CODESET calc

Prior to this commit, on non-Windows platforms that don't have a
nl_langinfo() libc function, the code completely punted computation of
the CODESET item.  I have not been able to figure out how to do this,
even going to the locale definition files on disk (which may vary
anyway), but we can do a lot better than punting.

This commit adds three checks:

1) If the locale name is C or POSIX, we know the codeset

2) We can detect if a locale is UTF-8.  If it is, that is the codeset.
Many modern locales are of this ilk.

3) Failing that, some locales have the codeset appear in the name,
following a dot.

It isn't perfect, but it's a lot better than completely punting.


  Commit: e95343dee03f5e5fa4357e7db3b655e70f3b8534
      https://github.com/Perl/perl5/commit/e95343dee03f5e5fa4357e7db3b655e70f3b8534
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  New signature for static fcn my_langinfo()

This commit changes the calling sequence for my_langinfo to add the
desired locale (or a sentinel to indicate to use the current locale),
and the locale category of the desired item.

This allows the function to be able to return the desired value for any
locale, avoiding some locale changes that would happen until this
commit, and hiding the need for locale changes from outside functions,
though a couple continue to do so to avoid potential multiple changes.


  Commit: b50e80e348fa2b4dfe6f1944dd26ee480f132f1c
      https://github.com/Perl/perl5/commit/b50e80e348fa2b4dfe6f1944dd26ee480f132f1c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add is_locale_utf8()

Previous commits have added the infrastructure to be able to determine
if a locale is UTF-8.  This will prove useful, and this commit adds
a function to encapsulate this information, and uses it in a couple of
places, with more to come in future commits.

This uses as a final fallback, mbtowc(), which some sources view was a
late adder to C89, and others as not really being available until C99.
Future commits will add heuristics when that function isn't available.


  Commit: b389c06014c37b287d9f414a6d03089c63f023e7
      https://github.com/Perl/perl5/commit/b389c06014c37b287d9f414a6d03089c63f023e7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add fcn for UTF8ness determination

get_locale_string_utf8ness_i() will determine if the string it is passed
in the locale it is passed is to be treated as UTF-8, or not.


  Commit: 3182e1fae6e5ab88c799e320c85fb4fb161f850a
      https://github.com/Perl/perl5/commit/3182e1fae6e5ab88c799e320c85fb4fb161f850a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M ext/POSIX/POSIX.xs
    M locale.c
    M proto.h

  Log Message:
  -----------
  XXX perldelta Move POSIX::localeconv() logic to locale.c

The code currently in POSIX.xs is moved to locale.c, and reworked some
to fit in that scheme, and the logic for the workaround for the Windows
broken localeconv() is made more robust.

This is in preparation for the next commit which will use this logic
instead of (imperfectly) duplicating it.

This also creates Perl_localeconv() for direct XS calls of this
functionality.


  Commit: 5928e9b5af30e212849628ae133c4d5d56a892d6
      https://github.com/Perl/perl5/commit/5928e9b5af30e212849628ae133c4d5d56a892d6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Collapse duplicate logic into one instance

The previous commit move the logic for localeconv() into locale.c.  This
commit takes advantage of that to use it instead of repeating the logic.

On Windows, there is alternative way of finding the radix character for
systems that have a localeconv() that could cause a race.  Prior to this
commit, if that failed to find something that looked like the radix, it
returned a '?'.  Now it will drop down to using this new code, as the
likelihood of the race is small.

Notably, this commit removes the inconsistent duplicate logic that had
been used to deal with the Windows broken localeconv() bug.


  Commit: bb7481a6bd3215dc757ecc530dc25e78b48e791f
      https://github.com/Perl/perl5/commit/bb7481a6bd3215dc757ecc530dc25e78b48e791f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Fix windows bug with broken localeconv()

localeconv() was broken on Windows until VS 2015.  As a workaround, this
was using my_snprintf() to find what the decimal point character is,
trying to avoid our workaround for localeconv(), which has a (slight)
chance of a race condition.

The problem is that my_snprintf() might not end up calling snprintf at
all; I didn't trace all possibilities in Windows.  So it doesn't make
for a reliable sentinel.

This commit now specifically uses libc snprintf(), and if it fails, drops
down to try localeconv().


  Commit: b226f221c442247164a54df2f3064bfac31dcc31
      https://github.com/Perl/perl5/commit/b226f221c442247164a54df2f3064bfac31dcc31
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M ext/POSIX/POSIX.xs
    M locale.c
    M proto.h

  Log Message:
  -----------
  XXXdelta Add my_strftime8()

This is like plain my_strftime(), but additionally returns an indication
of the UTF-8ness of the returned string


  Commit: 7ab3ab4a02a465939f96ed30e6cc520f8b9afd36
      https://github.com/Perl/perl5/commit/7ab3ab4a02a465939f96ed30e6cc520f8b9afd36
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Add utf8ness return param to static fcn

my_langinfo_i() now will additionally return the UTF-8ness of the
returned string.


  Commit: 898e074bb3f27aad5296d566ee03607393beef68
      https://github.com/Perl/perl5/commit/898e074bb3f27aad5296d566ee03607393beef68
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M ext/I18N-Langinfo/Langinfo.xs
    M locale.c
    M proto.h

  Log Message:
  -----------
  XXXdelta Add Perl_langinfo8()

This is like Perl_langinfo() but additionally returns information about
the UTF-8ness of the returned string.


  Commit: 4c11f17fa42f4c37acd3228e2f96eeaeacd49658
      https://github.com/Perl/perl5/commit/4c11f17fa42f4c37acd3228e2f96eeaeacd49658
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add fallbacks if no mbtowc()

This add heuristics that work well for non-English locales to determine
if a locale is UTF-8 or not when mbtowc() isn't available.  It would be
a very rare compiler that didn't have that these days, but this covers
that case as best as I have been able to figure out.


  Commit: c2ee392ad0cad6e398b66cde06a0cc0a7221c520
      https://github.com/Perl/perl5/commit/c2ee392ad0cad6e398b66cde06a0cc0a7221c520
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use Strerror(), not strerror()


  Commit: b7b83f56fd8c977ea78805400d82276ba9ee742f
      https://github.com/Perl/perl5/commit/b7b83f56fd8c977ea78805400d82276ba9ee742f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Refactor #ifdef's for clarity

The my_strerror() function has effectively 5 different implementations
depending on the capabilities of the platform.  Only a few lines are
common to all, the set-up and the return.  The #ifdefs obscure the
underlying logic.  So this commit separates them out into 5 different
functions, with the result that it's clear what is going on in each.


  Commit: 239ab8230bc84bcd38c63836e6df673fc76655b0
      https://github.com/Perl/perl5/commit/239ab8230bc84bcd38c63836e6df673fc76655b0
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Avoid mojibake in "$!"

In stress testing, I discovered that the LC_CTYPE and LC_MESSAGES
locales need to be the same locale, or strerror() can return
question marks or mojibake instead of the proper message.

This commit refactors the handling of stringifying "$!" to make the
locales of both categories the same during the stringification.

Actually, I suspect it isn't the locale, but the codeset of the locale
that needs to be the same.  I suspect that if the categories were both
in different UTF-8 locales, or both in single-byte locales, that things
would work fine.  But it's cheaper to find the locale rather than the
locale's codeset, so that is what is done.


  Commit: f9dd41d99ee7c1a1c5fbf280f14da3a0c00a0dba
      https://github.com/Perl/perl5/commit/f9dd41d99ee7c1a1c5fbf280f14da3a0c00a0dba
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M makedef.pl
    M mg.c
    M proto.h

  Log Message:
  -----------
  Move utf8ness calc for $! into locale.c from mg.c

locale.c has the infrastructure to handle this, so remove repeated
logic.

The removed code tried to discern better based on using script runs, but
this actually doesn't help, so is removed.


  Commit: 57375134f5ce85248447996970cf2b14691188e8
      https://github.com/Perl/perl5/commit/57375134f5ce85248447996970cf2b14691188e8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M mg.c

  Log Message:
  -----------
  mg.c: White-space only

Indent newly formed block from the previous commit.


  Commit: dc4ee1fdee1de60bda0ef593bc8b8dbe774ece9b
      https://github.com/Perl/perl5/commit/dc4ee1fdee1de60bda0ef593bc8b8dbe774ece9b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M embedvar.h
    M intrpvar.h
    M locale.c
    M proto.h
    M sv.c

  Log Message:
  -----------
  locale.c: Rmv no longer used code; UTF8ness cache

What these functions do has been subsumed by code introduced in previous
commits, and in a more straight forward manner.

Also removed in this commit is the cache of the knowing what locales are
UTF-8 or not.  This data is now cheaper to calculate when needed, and
there is now a single entry cache, so I don't think the complexity
warrants keeping it.

It could be added back if necessary, split off from the remainder of
this commit.


  Commit: 965b8cd4f97492f0998d4a93b609295d2ae34d28
      https://github.com/Perl/perl5/commit/965b8cd4f97492f0998d4a93b609295d2ae34d28
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Don't discard locale info in starting P2008

The program is started in the global locale, and then is converted to
the POSIX 2008 per-thread locale API.  Prior to this commit the startup
locale was discarded.  It really should be the foundation for the 2008
locales.  I don't know of any current paths through the code that this
makes a difference for, but it is a potential hole that is easy to plug.


  Commit: ee206f8053dadb64f1dfe9e292d083c0e8072180
      https://github.com/Perl/perl5/commit/ee206f8053dadb64f1dfe9e292d083c0e8072180
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M perl.h
    M proto.h

  Log Message:
  -----------
  Add a common locale panic macro and functions

This will make sure that all the necessary clean up gets done.


  Commit: 1dcd30353603a70e289ab06bc60bc3e232e7c045
      https://github.com/Perl/perl5/commit/1dcd30353603a70e289ab06bc60bc3e232e7c045
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Revamp sync_locale()

This rarely used function was actually failing to do what it purported
in some Configurations.


  Commit: 6c94392654d1d9635d99bafa312838b439114f41
      https://github.com/Perl/perl5/commit/6c94392654d1d9635d99bafa312838b439114f41
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Clean up thread_locale_init()

We can use internal functions to this file instead of the API ones here.
This commit also calls  sync_locale() to avoid repeated logic.


  Commit: 190f6f5d676f3eeb480d10234a9211dd3947175c
      https://github.com/Perl/perl5/commit/190f6f5d676f3eeb480d10234a9211dd3947175c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  Revamp switch_to_global_locale()

Prior to this commit, the global locale was not always getting populated
with the values from the thread being switched.


  Commit: f082fac33b3592bf694342ecacee89705d6b355e
      https://github.com/Perl/perl5/commit/f082fac33b3592bf694342ecacee89705d6b355e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Omit an extra copy

In this case in Perl_setlocale(), we can just return the plain result
from setlocale(), as, if something further needs to be done that would
destroy it, that is taken care of already at the time.

On per-thread locale platforms, the result already is in a per-category
buffer.


  Commit: 39d9679e92b656d60334ab5f21b655dc9cd72245
      https://github.com/Perl/perl5/commit/39d9679e92b656d60334ab5f21b655dc9cd72245
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embedvar.h
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.c
    M sv.c

  Log Message:
  -----------
  locale.c: Cache the current LC_CTYPE locale name

This is now used as a cache of length 1 to avoid having to lookup up the
UTF-8ness as often.

There was a complicated cache previously, but changes to the logic
caused that to be much less necessary, and it is no longer actually
used, and will be removed in a later commit.

But it's pretty easy to keep this single value around to cut further
down the new scheme's need to look it up


  Commit: e0a8ce5e6fdf3714a75f54eefdba9378a08ee548
      https://github.com/Perl/perl5/commit/e0a8ce5e6fdf3714a75f54eefdba9378a08ee548
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M intrpvar.h

  Log Message:
  -----------
  intrpvar.h: Initialize a variable

I don't believe there is a bug with this PL_numeric_name being
uninitialized, but this is an easy precaution.


  Commit: b7cd0a332f225576f69bc0836034a31bb0dfaac8
      https://github.com/Perl/perl5/commit/b7cd0a332f225576f69bc0836034a31bb0dfaac8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  Swap the ordering of two locale category indices

Perl internally uses a mapping of locale category values into a
consecutive sequence of indices starting at 0.  These are used as
indexes into arrays.  The reason is that the category numbers are
opaque, vary by platform, aren't necessarily sequential, and hence are
hard to make table driven code for.

This commit makes the LC_CTYPE index 0, and LC_NUMERIC equal to 1;
swapping them.  The reason is to cause LC_CTYPE to get done first in the
many loops through the categories.  The UTF8ness of categories is an
often needed value, and most of the time the categories will have the
same locale.  LC_CTYPE is needed to calculate the UTF8ness, and by doing
it first and caching the result, the other categories likely
automatically will use the same value, without having to recalculate.


  Commit: e2a9dd981e4d76064edea90c384b31d5199c0582
      https://github.com/Perl/perl5/commit/e2a9dd981e4d76064edea90c384b31d5199c0582
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use new mechanism to save/restore errno

Instead of explicitly saving the errno around debugging statements, the
new more general mechanism is used.


  Commit: 3baf66b6532c22ae629734076c3ccbdd051670a1
      https://github.com/Perl/perl5/commit/3baf66b6532c22ae629734076c3ccbdd051670a1
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Move DEBUG location info

This commit takes advantage of the new mechanism to add common DEBUGGING
code to print the __FILE__ and __LINE__ of every debugging statement.
This allows those to be removed from each statement, and have them
implicitly added.

This make things consistent, and easier to read and add new statements.


  Commit: ffa8e20ec9cd009f78761791d4065a6317204019
      https://github.com/Perl/perl5/commit/ffa8e20ec9cd009f78761791d4065a6317204019
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add some asserts


  Commit: da0d8051d6d49fc0036097c2c05b72f97d936eee
      https://github.com/Perl/perl5/commit/da0d8051d6d49fc0036097c2c05b72f97d936eee
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Reorder code, rmv unneeded conditional

Previous commits have made the conditional about being able to find the
radix character unnecessary.  The called function my_langinfo_c()
handles the case properly.

This commit also makes the trivial case first in a conditional, as that
is easier to comprehend.


  Commit: 484f2680f4137fa6400a1c0371d13e1118c2be01
      https://github.com/Perl/perl5/commit/484f2680f4137fa6400a1c0371d13e1118c2be01
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Reorder 'if' branches

It's better for understandability to have positive tests than negative
ones


  Commit: 98824f09bafbda93cea3a9ee67e2395b2446924d
      https://github.com/Perl/perl5/commit/98824f09bafbda93cea3a9ee67e2395b2446924d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Refactor a static function

S_new_numeric() is called after the LC_NUMERIC category is changed, to
update various ancillary information Perl keeps.

This reorders the function so that on POSIX 2008 platforms, the numeric
object is created earlier.  This allows for fewer operations on those
platforms, as we already have the correct value in place for querying
what the radix and thousands separator characters are.

Explanatory comments are also added.


  Commit: 5e24a4e9652d34eddcc9dca317283e449d3172f7
      https://github.com/Perl/perl5/commit/5e24a4e9652d34eddcc9dca317283e449d3172f7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Change assert() into STATIC_ASSERT()


  Commit: 79c476d80cf6ccfd5391046934410eb50985dd77
      https://github.com/Perl/perl5/commit/79c476d80cf6ccfd5391046934410eb50985dd77
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use standard fold table for C locale

Copy the standard compiled-in ASCII fold table when the locale is C or
POSIX, instead of looping through all 256 characters and computing them.
This saves some time as well as ensures that any platform bugs become
irrelevant.


  Commit: 51799d0f87f30cf3a6ad3f77434f1a36789df01f
      https://github.com/Perl/perl5/commit/51799d0f87f30cf3a6ad3f77434f1a36789df01f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add check that strxfrm didn't fail

The code failed to take into account that strxfrm() can fail for reasons
besides buffer length.  It does not return errors, and the only way to
check is to set errno to 0 beforehand, and check that it is still 0
afterwards.


  Commit: 087266d86899fdc78266d2148f0c7248d1cd1ae8
      https://github.com/Perl/perl5/commit/087266d86899fdc78266d2148f0c7248d1cd1ae8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Don't assume LC_CTYPE, LC_COLLATE are same

This code is using isCNTRL_LC which depends on LC_CTYPE to verify that
something in the LC_COLLATE locale is a control.  That only works
properly if the two locales are the same.  This commit adds code to
ensure they are.


  Commit: 47d7e7726f616e4f8aae8ed03b70bb60e495235c
      https://github.com/Perl/perl5/commit/47d7e7726f616e4f8aae8ed03b70bb60e495235c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: strxfrm() requires LC_CTYPE eq LC_COLLATE

The libc functions strxfrm() on some platforms requires the LC_CTYPE
locale to be the same as the LC_COLLATE locale (or rather, probably that
they have the same code set, but checking for locale is cheaper).
Otherwise mojibake would result, or more likely the function will fail,
setting errno.

This commit brings the locales into alignment if necessary


  Commit: 11beee73d28137b6a6c5ef6eef293135c1e46198
      https://github.com/Perl/perl5/commit/11beee73d28137b6a6c5ef6eef293135c1e46198
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M Configure
    M Cross/config.sh-arm-linux
    M Cross/config.sh-arm-linux-n770
    M NetWare/config.wc
    M Porting/config.sh
    M config_h.SH
    M configure.com
    M metaconfig.h
    M plan9/config_sh.sample
    M uconfig.h
    M uconfig.sh
    M uconfig64.sh
    M win32/config.gc
    M win32/config.vc

  Log Message:
  -----------
  Configure: strxfrm_l


  Commit: 74d78bad531d1b50287ca4b1801639904cf95792
      https://github.com/Perl/perl5/commit/74d78bad531d1b50287ca4b1801639904cf95792
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M lib/locale.t

  Log Message:
  -----------
  XXX temp: Windows debug


  Commit: eba03d95843ee6e25cff263af45723e1602a4979
      https://github.com/Perl/perl5/commit/eba03d95843ee6e25cff263af45723e1602a4979
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Use strxfrm_l() if available

This more modern version of the function doesn't require us to change
locales.


  Commit: 77f4ffcd0a8ee45dd0a12ff7f90b168112fd860f
      https://github.com/Perl/perl5/commit/77f4ffcd0a8ee45dd0a12ff7f90b168112fd860f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M mathoms.c
    M proto.h
    M sv.c

  Log Message:
  -----------
  Change name of internal function

This is in preparation for working on it; the new name, mem_collxfrm_ is
in compliance with the C Standard; the old was not.


  Commit: 5815ea8efb0f28f601a1db13d4b663430762ada4
      https://github.com/Perl/perl5/commit/5815ea8efb0f28f601a1db13d4b663430762ada4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M ext/POSIX/POSIX.xs
    M ext/POSIX/lib/POSIX.pod
    M locale.c
    M proto.h

  Log Message:
  -----------
  XXXdelta Fix POSIX::strxfrm()

This function takes an SV containing a PV.  The encoding of that PV is
based on the locale of the LC_CTYPE locale.  It really doesn't make
sense to collate based off of the sequencing of a different locale, which
prior to this commit it would do if the LC_COLLATION locale were
different.


  Commit: d466ef8b5d375d8ecf5bfbb697d655629fbad114
      https://github.com/Perl/perl5/commit/d466ef8b5d375d8ecf5bfbb697d655629fbad114
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Improve debugging for mem_collxfrm()

This prints out more information, better organized.

It also moves up the info from -DLv to plain -DL


  Commit: faa3f3544489590719fb5dfbf8e10766514a4a3c
      https://github.com/Perl/perl5/commit/faa3f3544489590719fb5dfbf8e10766514a4a3c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Add debug statement for collation failure

Perhaps this should be a warning to the user that we couldn't calculate
collation info for the locale, but at least there should be a way to
get that info from a DEBUG statement


  Commit: 4690097fddf20baa726c6984d2fad82cee6a1677
      https://github.com/Perl/perl5/commit/4690097fddf20baa726c6984d2fad82cee6a1677
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Print code point in hex, not decimal

Hex is the more familiar form


  Commit: 82fd53f4f3c90ebe90490d41d2f9973ef6704d95
      https://github.com/Perl/perl5/commit/82fd53f4f3c90ebe90490d41d2f9973ef6704d95
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs
    M locale.c
    M perl.h

  Log Message:
  -----------
  Mark certain mutex lock macros as private

mbtowc() mblen(), and wctomb() should not be directly used by XS
writers; instead use the POSIX versions.  Don't encourage the direct use
by having public macros to aid in their use.


  Commit: d31e69c0d1a6fbe07d148c94a5b902d6d3b82dd6
      https://github.com/Perl/perl5/commit/d31e69c0d1a6fbe07d148c94a5b902d6d3b82dd6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Move some code around

This is purely to make future commits have smaller real difference
listings, and involves a temporary (complemented) copy of a preprocessor
conditional.


  Commit: 7886d0ad74ebc3123f83912998afa0f8b1903150
      https://github.com/Perl/perl5/commit/7886d0ad74ebc3123f83912998afa0f8b1903150
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embedvar.h
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.h
    M sv.c

  Log Message:
  -----------
  Make the locale mutex a general semaphore

Future commits will use this new capability, and in Configurations where
no locale locking is currently necessary.


  Commit: 8c2460f3f7a7e6d8e81e89dc1244ead2fa419aa6
      https://github.com/Perl/perl5/commit/8c2460f3f7a7e6d8e81e89dc1244ead2fa419aa6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embedvar.h
    M intrpvar.h
    M makedef.pl
    M perl.h
    M perlvars.h
    M sv.c

  Log Message:
  -----------
  Use general locale mutex for numeric operations

This commit removes the separate mutex for locking locale-related
numeric operations on threaded perls; instead using the general locale
one.  The previous commit made that a general semaphore, so now suitable
for use for this purpose as well.

This means that the locale can be locked for the duration of some
sprintf operations, longer than before this commit.  But on most modern
platforms, thread-safe locales cause this lock to expand just to a
no-op; so there is no effect on these.  And on the impacted platforms,
one is not supposed to be using locales and threads in combination, as
races can occur.  This lock is used on those perls to keep Perl's
manipulation of LC_NUMERIC thread-safe.  And for those there is also no
effect, as they already lock around those sprintf's.


  Commit: c0238923a9000a49d4aef91a4cd66a4f508c790c
      https://github.com/Perl/perl5/commit/c0238923a9000a49d4aef91a4cd66a4f508c790c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  Add locale macro to wrap static-space-using fncs

Some functions return a result in a global-to-the-program buffer, or
they have an internal global buffer.  Other threads must be kept from
simultaneously using that function.  This macro is to be used for all
such ones dealing with locales.  Ideally, there would be a separate mutex
for each such buffer space.  But these functions also have to lock the
locale from changing during their execution, and there aren't that many
such functions, and they actually are rarely executed.  So a single lock
will do.

This will allow future commits to have more targeted locking for
functions that don't affect the global locale.


  Commit: d410e550a36c4c6ebb014187598e806c70371e1b
      https://github.com/Perl/perl5/commit/d410e550a36c4c6ebb014187598e806c70371e1b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  Redefine the POSIX.xs locale macros using prev commit

This commit uses the new macro introduced in the previous commit to
define the internal locale mutex macros in POSIX.xs


  Commit: 980ec09d742acdf5fbae9f6b7786330be6c130ac
      https://github.com/Perl/perl5/commit/980ec09d742acdf5fbae9f6b7786330be6c130ac
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  perl.h: Remove NL_LANGINFO_LOCK

This is needed in precisely one place in the code, so move it to there.


  Commit: 6d6e629569d56e310ce3f7823b17342f14e25a2d
      https://github.com/Perl/perl5/commit/6d6e629569d56e310ce3f7823b17342f14e25a2d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  perl.h: Remove LOCALECONV_LOCK

This is needed in just one function, in locale.c, so more it there.


  Commit: ab3418edccc49d81b6c28998d95cc45b6b242f8d
      https://github.com/Perl/perl5/commit/ab3418edccc49d81b6c28998d95cc45b6b242f8d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c
    M perl.h

  Log Message:
  -----------
  XXX perlembed Add PORCELAIN_SETLOCALE_LOCK/UNLOCK

This macro is used to surround raw setlocale() calls so that the return
value in a global static buffer can be saved without interference with
other threads.

There are a few very rarely occurring instances in locale.c that are
converted to use this.  These previously could have been races.

The raw setlocales in the initialization function are not guarded, as
these happen early in the Perl process initialization, before threading
is enabled.

This is buggy if there are multiple embedded perls.  It can't be helped.
perlembed is being updated to indicate this.


  Commit: cf5df7609711b60d0d95ee88c06dfc6c39cb2862
      https://github.com/Perl/perl5/commit/cf5df7609711b60d0d95ee88c06dfc6c39cb2862
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Move #defining SETLOCALE_LOCK

This simplifies slightly, and will allow further simplification


  Commit: ce4b4d459e9d9cc36632e03b025dfe7ba7da8df2
      https://github.com/Perl/perl5/commit/ce4b4d459e9d9cc36632e03b025dfe7ba7da8df2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Move LOCALE_READ_LOCK #definition

To enable future simplifications


  Commit: b300e67d0c6579db360cc1b5231653585f2b6a95
      https://github.com/Perl/perl5/commit/b300e67d0c6579db360cc1b5231653585f2b6a95
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M intrpvar.h
    M locale.c
    M makedef.pl
    M perl.c
    M perl.h
    M sv.c

  Log Message:
  -----------
  locale.c: Move #define to perl.h; use it elsewhere

 Rather than recalculate this combined conditional, do it once in
 perl.h.


  Commit: 860b92beef68f094bc2e1108c184009286d0ee20
      https://github.com/Perl/perl5/commit/860b92beef68f094bc2e1108c184009286d0ee20
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M embed.fnc
    M embed.h
    M locale.c
    M proto.h

  Log Message:
  -----------
  locale.c: Mitigate unsafe threaded locales

This a new set of macros and functions to do locale changing and
querying for platforms where perl is compiled with threads, but the
platform doesn't have thread-safe locale handling.

All it does is:

1) The return of setlocale() is always safely saved in a per-thread
buffer, and
2) setlocale() is protected by a mutex from other threads which are
using perl's locale functions.

This isn't much, but it might be enough to get some programs to work on
such platforms which rarely change or query the locale.


  Commit: 5bf563b1c7f5aff597657291ad5ac113e2d2cd5c
      https://github.com/Perl/perl5/commit/5bf563b1c7f5aff597657291ad5ac113e2d2cd5c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M cygwin/cygwin.c

  Log Message:
  -----------
  cygwin


  Commit: f743e41e87edd1676cc2bd30be76a6851eda863b
      https://github.com/Perl/perl5/commit/f743e41e87edd1676cc2bd30be76a6851eda863b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  XXX make sure comments get moved appropriately perl.h: Remove now empty block

Previous commits have left this empty except for comments.


  Commit: b9cbb0ad4191172603fb57a317bbe7459a9ccdbb
      https://github.com/Perl/perl5/commit/b9cbb0ad4191172603fb57a317bbe7459a9ccdbb
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M pp.c

  Log Message:
  -----------
  XXX pp.c: do %g print under mutex,


  Commit: bef908188c60e4c686a7edd652b6af7849ee8649
      https://github.com/Perl/perl5/commit/bef908188c60e4c686a7edd652b6af7849ee8649
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M ebcdic_tables.h
    M embedvar.h
    M globvar.sym
    M inline.h
    M intrpvar.h
    M perl.h
    M regen/ebcdic.pl

  Log Message:
  -----------
  Make fc(), /i thread-safe on participating platforms

A long standing bug in Perl that has gone undetected is that the array
is global that is created when changing locales and tells fc() and qr//i
matching what the folds are in the new locale.

What this means is that any program only has one set of fold definitions
that apply to all threads within it, even if we claim that the locales
are thread-safe on the given platform.  One possibility for this going
undetected so long is that no one is using locales on multi-threaded
systems much.  Another possibility is that modern UTF-8 locales have the
same set of folds as any other one.

It is a simple matter to make the fold array per-thread instead of
per-process, and that solves the problem transparently to other code.

I discovered this stress-testing locale handling under threads.  That
test will be added in a future commit.


  Commit: 2dc70b92ecf956bfba9df8e759a151efeb5af554
      https://github.com/Perl/perl5/commit/2dc70b92ecf956bfba9df8e759a151efeb5af554
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M inline.h
    M locale.c

  Log Message:
  -----------
  XXX temp debug? locale.c, inline.h:foldEQ_locale


  Commit: 20a0f9b49a75f2d96023b86cc9eef60cb124f7e9
      https://github.com/Perl/perl5/commit/20a0f9b49a75f2d96023b86cc9eef60cb124f7e9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c comments


  Commit: 2f04eb157b5f6d84f4a21c4234483a66577896e2
      https://github.com/Perl/perl5/commit/2f04eb157b5f6d84f4a21c4234483a66577896e2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  XXX prob drop; done before anything so no races


  Commit: ef9bd0f0d30ca65a20933c7211b15ce2899e4971
      https://github.com/Perl/perl5/commit/ef9bd0f0d30ca65a20933c7211b15ce2899e4971
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Add #define for gwENVr_LOCALEr_UNLOCK

This is for functions that read the locale and environment and write to
some global space.


  Commit: 0d9ad9efb39c5501ff724ddf21106f1e3ed517ab
      https://github.com/Perl/perl5/commit/0d9ad9efb39c5501ff724ddf21106f1e3ed517ab
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h
    M time64.c

  Log Message:
  -----------
  Remove ENV_LOCALE_LOCK/UNLOCK macros

These are subsumed by gwENVr_LOCALEr_LOCK created in the previous
commit.


  Commit: 6f6bfb198aa68627986e7722e213daf935acb646
      https://github.com/Perl/perl5/commit/6f6bfb198aa68627986e7722e213daf935acb646
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h
    M time64.c
    M util.c

  Log Message:
  -----------
  Change ENV/LOCALE locking read macro names

The old name was confusing.


  Commit: fb6e6cfb3284305bac6d319f5919b39926529377
      https://github.com/Perl/perl5/commit/fb6e6cfb3284305bac6d319f5919b39926529377
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Move some statements

So they are closer to related statements


  Commit: 55e60ae991e78f3c1af206c329b13ef028a61162
      https://github.com/Perl/perl5/commit/55e60ae991e78f3c1af206c329b13ef028a61162
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h
    M util.c

  Log Message:
  -----------
  perl.h: Finish implementing combo ENV/LOCALE mutexes

There are cases where an executing function is vulnerable to either the
locale or environment being changed by another thread.  This commit
implements macros that use mutexes to protect these critical sections.
There are two cases that exist:  one where the functions only read; and
one where they can also need exclusive control so that a competing
thread can't overwrite the returned static buffer before it is safely
copied.

5.32 had a placeholder for these, but didn't actually implement it.
Instead it locked just the ENV portion.  On modern platforms with
thread-safe locales, the locale portion is a no-op anyway, so things
worked on them.

This new commit extends that safety to other platforms.  This has long
been a vulnerability in Perl.


  Commit: 7b1bab75c035399847cfe202ed483eea76956aa2
      https://github.com/Perl/perl5/commit/7b1bab75c035399847cfe202ed483eea76956aa2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M time64.c

  Log Message:
  -----------
  time64.c: Remove no longer needed code

This code defined some macros; those are now defined by perl.h


  Commit: 902f49da41f8a2f70371dbd7071cdefa9238ae50
      https://github.com/Perl/perl5/commit/902f49da41f8a2f70371dbd7071cdefa9238ae50
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M pp_sys.c

  Log Message:
  -----------
  XXX need to StructCopy pp_sys mutexes


  Commit: fe8d0476438538238cc5864266039c4b55b0ef21
      https://github.com/Perl/perl5/commit/fe8d0476438538238cc5864266039c4b55b0ef21
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M win32/win32.c

  Log Message:
  -----------
  win32.c: Add mutexes around some calls

These could have races.


  Commit: 07daef81d4bc2dce646a1437116505f081170a4f
      https://github.com/Perl/perl5/commit/07daef81d4bc2dce646a1437116505f081170a4f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M util.c

  Log Message:
  -----------
  util.c: mktime needs to run under a mutex

per the Posix standard


  Commit: ffb12183ecc5ebe2084946ff409648ddf8b481d5
      https://github.com/Perl/perl5/commit/ffb12183ecc5ebe2084946ff409648ddf8b481d5
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M dist/ExtUtils-ParseXS/lib/perlxs.pod
    M t/porting/known_pod_issues.dat

  Log Message:
  -----------
  perlxs


  Commit: 43b6bd5d492ca209222a82f4e787ef8a51688c93
      https://github.com/Perl/perl5/commit/43b6bd5d492ca209222a82f4e787ef8a51688c93
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs

  Log Message:
  -----------
  POSIX.xs env locks, check file for more


  Commit: a2bab916090aeea512f398e860c63018bbb57f47
      https://github.com/Perl/perl5/commit/a2bab916090aeea512f398e860c63018bbb57f47
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M os2/os2.c

  Log Message:
  -----------
  os2: Use many reader lock instead of exclusive

This is just reading the environment, not changing it, so a many readers
can be accessing it at the same time.


  Commit: fa04099e339f4dccd9843553c2691dd6635864c1
      https://github.com/Perl/perl5/commit/fa04099e339f4dccd9843553c2691dd6635864c1
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.pm
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  XXX cpan PR Time-Piece: Add locks

This add mutex locking around some unsafe thread operations to make this
module thread-safe.


  Commit: ee12a1ae7d8b35190db0b819d07fd9673b6fec91
      https://github.com/Perl/perl5/commit/ee12a1ae7d8b35190db0b819d07fd9673b6fec91
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  Time-Piece: Use foldEQ_locale() if available

This supported core function is thread-safe and knows about Perl
internals, so is preferable to the similar libc function, which is now
used only as a fallback.  This commit also bomb proofs the code by
adding an additional fallback, specified in C89, which isn't a great
substituted, but far better than nothing.


  Commit: 0557dc158f16d8d30aaf9bad5f9c1a4888f32e26
      https://github.com/Perl/perl5/commit/0557dc158f16d8d30aaf9bad5f9c1a4888f32e26
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  Time-Piece: Use isSPACE, not isspace

The latter gives results that are dependent on the program's underlying
locale, and so may be inconsistent.

If locale dependence is actually desired, isSPACE_LC should be used, as
it knows about various things the module writer shouldn't have to
concern themselves with.  It is supported since 5.004


  Commit: b5df29cb7050c9ca03706ff7b02234973b34562d
      https://github.com/Perl/perl5/commit/b5df29cb7050c9ca03706ff7b02234973b34562d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  Time-Piece: Use isDIGIT, not isdigit

The latter gives results that are dependent on the program's underlying
locale, and so may be inconsistent.

If locale dependence is actually desired, isDIGIT_LC should be used, as
it knows about various things the module writer shouldn't have to
concern themselves with.  It is supported since 5.004


  Commit: bca8e3f9cfea79ff8e880848e155331fc7b23dfd
      https://github.com/Perl/perl5/commit/bca8e3f9cfea79ff8e880848e155331fc7b23dfd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs

  Log Message:
  -----------
  Time-Piece: Use isUPPER, not isupper

The latter gives results that are dependent on the program's underlying
locale, and so may be inconsistent.

If locale dependence is actually desired, isUPPER_LC should be used, as
it knows about various things the module writer shouldn't have to
concern themselves with.  It is supported since 5.004


  Commit: 4a99e5a23097e35ae9246c5945ba34c1eacbbb31
      https://github.com/Perl/perl5/commit/4a99e5a23097e35ae9246c5945ba34c1eacbbb31
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M pod/perlhacktips.pod

  Log Message:
  -----------
  XXX incomplete perlhacktips:


  Commit: e35f3ce488b44cfb372270206951ebb0e0170637
      https://github.com/Perl/perl5/commit/e35f3ce488b44cfb372270206951ebb0e0170637
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M dist/IO/IO.pm
    M dist/IO/IO.xs

  Log Message:
  -----------
  XXX check if using ppport IO.xs: Remove fallback code furnished by ppport


  Commit: 1bb64aaf456ab14048d40347d6c692a40adb8e29
      https://github.com/Perl/perl5/commit/1bb64aaf456ab14048d40347d6c692a40adb8e29
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M hints/freebsd.sh

  Log Message:
  -----------
  XXX check with freebsd: hints/freebsd.sh


  Commit: 5e07e13671da6a38a5d1a3c7401def7bae37fb92
      https://github.com/Perl/perl5/commit/5e07e13671da6a38a5d1a3c7401def7bae37fb92
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M thread.h

  Log Message:
  -----------
  thread.h: White-space, braces only


  Commit: e736b2a0c9a628851188db255cd9ad22bba23871
      https://github.com/Perl/perl5/commit/e736b2a0c9a628851188db255cd9ad22bba23871
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M thread.h

  Log Message:
  -----------
  XXX thread.h Save errno around lock/unlock


  Commit: 80493a77de539cafb519e04eb087e760e30baeeb
      https://github.com/Perl/perl5/commit/80493a77de539cafb519e04eb087e760e30baeeb
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-20 (Sat, 20 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  XXX perl.h: Debugging mutex lock'


Compare: https://github.com/Perl/perl5/compare/12ea85150132...80493a77de53



nntp.perl.org: Perl Programming lists via nntp and http.
Comments to Ask Bjørn Hansen at ask@perl.org | Group listing | About