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[Perl/perl5] e2cdda: XXX craig Unixish.h, doshish.h: Reorderterminatio...

From:
Karl Williamson via perl5-changes
Date:
March 22, 2021 17:24
Subject:
[Perl/perl5] e2cdda: XXX craig Unixish.h, doshish.h: Reorderterminatio...
Message ID:
Perl/perl5/push/refs/heads/smoke-me/khw-locale/80493a-934f1c@github.com
  Branch: refs/heads/smoke-me/khw-locale
  Home:   https://github.com/Perl/perl5
  Commit: e2cddaab3281a7d7012753c7314414b4c6e607f4
      https://github.com/Perl/perl5/commit/e2cddaab3281a7d7012753c7314414b4c6e607f4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 5c43c2e3036391ad1051b908c9854d968fd99e50
      https://github.com/Perl/perl5/commit/5c43c2e3036391ad1051b908c9854d968fd99e50
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 23256ec2cbb86590a9f282b6ff83d43f056323d9
      https://github.com/Perl/perl5/commit/23256ec2cbb86590a9f282b6ff83d43f056323d9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M lib/locale_threads.t

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


  Commit: 4f5dc4697a07765ccf01d3867638a58daf51b14a
      https://github.com/Perl/perl5/commit/4f5dc4697a07765ccf01d3867638a58daf51b14a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 920586f1c226be5df1571d39bb45317fcc7745ca
      https://github.com/Perl/perl5/commit/920586f1c226be5df1571d39bb45317fcc7745ca
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: ebb2d96b0768b6240aaf97c0f0758031490e811a
      https://github.com/Perl/perl5/commit/ebb2d96b0768b6240aaf97c0f0758031490e811a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: daf76dfda757a3002c63d30e62240f6244d9c5b7
      https://github.com/Perl/perl5/commit/daf76dfda757a3002c63d30e62240f6244d9c5b7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2bf63f3fb55453944021872c25920ae172b21c13
      https://github.com/Perl/perl5/commit/2bf63f3fb55453944021872c25920ae172b21c13
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: f0d8edf489091785a93785de048a8c34e9c81793
      https://github.com/Perl/perl5/commit/f0d8edf489091785a93785de048a8c34e9c81793
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M handy.h

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


  Commit: eb4ba4c62ed8d59c8a780424a254a8d3592eee4c
      https://github.com/Perl/perl5/commit/eb4ba4c62ed8d59c8a780424a254a8d3592eee4c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M handy.h

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


  Commit: c27bba6b37b19974c9ff00137ca92fefc32e762e
      https://github.com/Perl/perl5/commit/c27bba6b37b19974c9ff00137ca92fefc32e762e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 00d8f26aa2dc89afa7354ba7d2ca1e68a999f52b
      https://github.com/Perl/perl5/commit/00d8f26aa2dc89afa7354ba7d2ca1e68a999f52b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 3d8183254ce5d4c1169c4ffaec762fa12a17090f
      https://github.com/Perl/perl5/commit/3d8183254ce5d4c1169c4ffaec762fa12a17090f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: b2a0089a6e450e5706c98137db423510b6e80dd4
      https://github.com/Perl/perl5/commit/b2a0089a6e450e5706c98137db423510b6e80dd4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: d046d804d077c849b09dd3637d64f62500a9fcf5
      https://github.com/Perl/perl5/commit/d046d804d077c849b09dd3637d64f62500a9fcf5
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: c2a63912e7300ec5b7086409dc95e515a1b79d75
      https://github.com/Perl/perl5/commit/c2a63912e7300ec5b7086409dc95e515a1b79d75
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: bb42941b2d4535ee8245a3e1f6070e7ce67b39ee
      https://github.com/Perl/perl5/commit/bb42941b2d4535ee8245a3e1f6070e7ce67b39ee
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: ee73e38cd34a5b6244bad4263014ad70a80f1872
      https://github.com/Perl/perl5/commit/ee73e38cd34a5b6244bad4263014ad70a80f1872
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M handy.h

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


  Commit: 06389853f160d77a585fc5543a21392e402f13b8
      https://github.com/Perl/perl5/commit/06389853f160d77a585fc5543a21392e402f13b8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M handy.h

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

As a convenience to other code.


  Commit: 306421a373bce2b94f1bee756cb100489a8da0d9
      https://github.com/Perl/perl5/commit/306421a373bce2b94f1bee756cb100489a8da0d9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: b2a7da98bcba6a83fc1bb3b29a608b512ae93c87
      https://github.com/Perl/perl5/commit/b2a7da98bcba6a83fc1bb3b29a608b512ae93c87
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 0a33d920782d9ad0fb16a8bb0fed658e0a8c521c
      https://github.com/Perl/perl5/commit/0a33d920782d9ad0fb16a8bb0fed658e0a8c521c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

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


  Commit: 8d7aa435d89885cad25395a01116a3d8cb5120b9
      https://github.com/Perl/perl5/commit/8d7aa435d89885cad25395a01116a3d8cb5120b9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 97af48048afb8f561f3c74fe7c6cfb1b62454d6f
      https://github.com/Perl/perl5/commit/97af48048afb8f561f3c74fe7c6cfb1b62454d6f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 15a0f3037bd44bc7887161c261a4b1b102319acc
      https://github.com/Perl/perl5/commit/15a0f3037bd44bc7887161c261a4b1b102319acc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2f2ec7d8c6a4d54823b7213c686b7ff2005ccf99
      https://github.com/Perl/perl5/commit/2f2ec7d8c6a4d54823b7213c686b7ff2005ccf99
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 84c4ba549524581c6eb821bb949f71d1d2122651
      https://github.com/Perl/perl5/commit/84c4ba549524581c6eb821bb949f71d1d2122651
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: ed58011d691ea605e0d724353f71f3bfd543d230
      https://github.com/Perl/perl5/commit/ed58011d691ea605e0d724353f71f3bfd543d230
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2bd4fc24b2dad191b3557101fc62c939bfb29875
      https://github.com/Perl/perl5/commit/2bd4fc24b2dad191b3557101fc62c939bfb29875
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 9e762ee45076129ba031779052676d7e67e5508b
      https://github.com/Perl/perl5/commit/9e762ee45076129ba031779052676d7e67e5508b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: dcced864413dd6dc8bdc5e927ab14d49413bd2cd
      https://github.com/Perl/perl5/commit/dcced864413dd6dc8bdc5e927ab14d49413bd2cd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 003fb659c6288d70c18e6a81c55f6e2172ccce02
      https://github.com/Perl/perl5/commit/003fb659c6288d70c18e6a81c55f6e2172ccce02
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 7ec231b15a9391f6aa8fc72556f1ffeb56667a02
      https://github.com/Perl/perl5/commit/7ec231b15a9391f6aa8fc72556f1ffeb56667a02
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: d8819f7e408b48ff1c725d95d5bd81e3b7c55435
      https://github.com/Perl/perl5/commit/d8819f7e408b48ff1c725d95d5bd81e3b7c55435
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 73a6f8602ad9501b5a011e57b141c3723904bc7b
      https://github.com/Perl/perl5/commit/73a6f8602ad9501b5a011e57b141c3723904bc7b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 7f69439ed6880aba2b51f737c1ef9f8cb0b8f5ee
      https://github.com/Perl/perl5/commit/7f69439ed6880aba2b51f737c1ef9f8cb0b8f5ee
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

  Log Message:
  -----------
  locale.c: Outdent previous commit

The previous commit kept the indentation level the same as it moved code
to a new function, even though an outer block was stripped off in the
process.  This was to minimize diff output.  This commit is white space
only.


  Commit: 39c2b573e3d57c6cb6dab928ee7aa15ebae0a90f
      https://github.com/Perl/perl5/commit/39c2b573e3d57c6cb6dab928ee7aa15ebae0a90f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 85e0349c6c163e8fd3a4aac249a24d2459f6d3df
      https://github.com/Perl/perl5/commit/85e0349c6c163e8fd3a4aac249a24d2459f6d3df
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 4e5b6b63be2fcd44d4ed36c82c5d19c4e0e55763
      https://github.com/Perl/perl5/commit/4e5b6b63be2fcd44d4ed36c82c5d19c4e0e55763
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: d56a08f11e6b5f3e45fd4dda3abe4ad332919ea9
      https://github.com/Perl/perl5/commit/d56a08f11e6b5f3e45fd4dda3abe4ad332919ea9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 18e3e34abbb1c0cfc1bd240992568a5ce1a1418d
      https://github.com/Perl/perl5/commit/18e3e34abbb1c0cfc1bd240992568a5ce1a1418d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 019b7f87e65958b09c5971a7507ecf68dace7a0c
      https://github.com/Perl/perl5/commit/019b7f87e65958b09c5971a7507ecf68dace7a0c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: fe318023007fb98bf167996eb74db2463b6f48b3
      https://github.com/Perl/perl5/commit/fe318023007fb98bf167996eb74db2463b6f48b3
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 8a185babe8c9044f20cf5de9d32472e9ec9ba344
      https://github.com/Perl/perl5/commit/8a185babe8c9044f20cf5de9d32472e9ec9ba344
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: e43170eee02d6eeb35ecf9dc0b71db8aa99dcfb4
      https://github.com/Perl/perl5/commit/e43170eee02d6eeb35ecf9dc0b71db8aa99dcfb4
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 1778089f8701d077e147be8d72d0267b2e6a8070
      https://github.com/Perl/perl5/commit/1778089f8701d077e147be8d72d0267b2e6a8070
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2c7aa0c984dda0c3718df501646dcd2b155ce659
      https://github.com/Perl/perl5/commit/2c7aa0c984dda0c3718df501646dcd2b155ce659
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 0d24b76f7737080018abd71857faa9bd341a1d73
      https://github.com/Perl/perl5/commit/0d24b76f7737080018abd71857faa9bd341a1d73
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 6ed6720b29da22ac22b341d741bffc60b109da35
      https://github.com/Perl/perl5/commit/6ed6720b29da22ac22b341d741bffc60b109da35
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: c2dc925ad189223d9225e7d3c1865abf6c1b3183
      https://github.com/Perl/perl5/commit/c2dc925ad189223d9225e7d3c1865abf6c1b3183
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 4d1bac2272d243edabba2b28fad4e55393143933
      https://github.com/Perl/perl5/commit/4d1bac2272d243edabba2b28fad4e55393143933
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: c0125a737728129e22e2a0f5c414a5cc282a3c19
      https://github.com/Perl/perl5/commit/c0125a737728129e22e2a0f5c414a5cc282a3c19
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: b3242ab4c0e1d0790517d350cc4df612e9eb4c99
      https://github.com/Perl/perl5/commit/b3242ab4c0e1d0790517d350cc4df612e9eb4c99
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 8179a057d583e7affed06ad6f46eb749cb38eede
      https://github.com/Perl/perl5/commit/8179a057d583e7affed06ad6f46eb749cb38eede
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: b8fd960f60739dff8007aaf0fdf6c5013bd906ce
      https://github.com/Perl/perl5/commit/b8fd960f60739dff8007aaf0fdf6c5013bd906ce
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: dd07b2f5eb41be103d37d85c049c875996e40bfc
      https://github.com/Perl/perl5/commit/dd07b2f5eb41be103d37d85c049c875996e40bfc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: f8a862af809d14c9f7dfb55ab2730553fb3b6f0a
      https://github.com/Perl/perl5/commit/f8a862af809d14c9f7dfb55ab2730553fb3b6f0a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: cbe619af24a227ada5190d72d7ae9c58066544c2
      https://github.com/Perl/perl5/commit/cbe619af24a227ada5190d72d7ae9c58066544c2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: af2c4593e532241cccb593a91b85fbfaa0cd0c01
      https://github.com/Perl/perl5/commit/af2c4593e532241cccb593a91b85fbfaa0cd0c01
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 8f7ba8431ba40ad1c9de0a2b73559386a6ab13ee
      https://github.com/Perl/perl5/commit/8f7ba8431ba40ad1c9de0a2b73559386a6ab13ee
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: a7e0a2ce72b967e5436816b67ece46c6d5232096
      https://github.com/Perl/perl5/commit/a7e0a2ce72b967e5436816b67ece46c6d5232096
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2c8f7215800bfa40c700262d3279567012837408
      https://github.com/Perl/perl5/commit/2c8f7215800bfa40c700262d3279567012837408
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 3c584524f9d07c22c9d4b4ca9db6c9ce951de347
      https://github.com/Perl/perl5/commit/3c584524f9d07c22c9d4b4ca9db6c9ce951de347
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs

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

Properly indent some nested preprocessor directives


  Commit: 06f6d4bc0950d41fb9abe488a5ad1db81087b989
      https://github.com/Perl/perl5/commit/06f6d4bc0950d41fb9abe488a5ad1db81087b989
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 279aef6f455384fa5293b5e5423fd00b86bb03fd
      https://github.com/Perl/perl5/commit/279aef6f455384fa5293b5e5423fd00b86bb03fd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 800b7461b410ee0b8a3168c41f2ea2fd62c1953b
      https://github.com/Perl/perl5/commit/800b7461b410ee0b8a3168c41f2ea2fd62c1953b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 964259906aea4a71991c37f0cc0e93149bae069b
      https://github.com/Perl/perl5/commit/964259906aea4a71991c37f0cc0e93149bae069b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: aea4e84af8c880c07393191e1a8957165d8dea8e
      https://github.com/Perl/perl5/commit/aea4e84af8c880c07393191e1a8957165d8dea8e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2a2dbd5b80d325e548edf4f7edc5163190b6c7b3
      https://github.com/Perl/perl5/commit/2a2dbd5b80d325e548edf4f7edc5163190b6c7b3
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: a385432051a0381999c3dcbb79632357d12145a3
      https://github.com/Perl/perl5/commit/a385432051a0381999c3dcbb79632357d12145a3
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: a27a13334edd0020d43616e9a79cf92a8a41ca47
      https://github.com/Perl/perl5/commit/a27a13334edd0020d43616e9a79cf92a8a41ca47
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 42da8b29f62961a6c9b3ff47dddfd2f19fcdd4f8
      https://github.com/Perl/perl5/commit/42da8b29f62961a6c9b3ff47dddfd2f19fcdd4f8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

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

This allows some preprocessor conditionals to be removed


  Commit: 647686df893d8a653f457c10a480a71bda32dbab
      https://github.com/Perl/perl5/commit/647686df893d8a653f457c10a480a71bda32dbab
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

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

strEQ and && already return booleans


  Commit: 5c67e0eed625fffaa30ad6d140d8259c5fa99a4f
      https://github.com/Perl/perl5/commit/5c67e0eed625fffaa30ad6d140d8259c5fa99a4f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 9a121dfffd032380d611c65a3b2f472c65824dcc
      https://github.com/Perl/perl5/commit/9a121dfffd032380d611c65a3b2f472c65824dcc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: e4373c4791aeb1a9745fe9db2ba82b9a6e9dd242
      https://github.com/Perl/perl5/commit/e4373c4791aeb1a9745fe9db2ba82b9a6e9dd242
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 5ad58663ddd3bcec054b8c51cee43ac7a11b9c53
      https://github.com/Perl/perl5/commit/5ad58663ddd3bcec054b8c51cee43ac7a11b9c53
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 24df1a9be837f13a2970a8435e9235d474ff149e
      https://github.com/Perl/perl5/commit/24df1a9be837f13a2970a8435e9235d474ff149e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 5552b99fc26728b5fae9d2651d49f586c33e5ca0
      https://github.com/Perl/perl5/commit/5552b99fc26728b5fae9d2651d49f586c33e5ca0
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: b43221e0bf9cd4c05b07d2901e806edc88465acf
      https://github.com/Perl/perl5/commit/b43221e0bf9cd4c05b07d2901e806edc88465acf
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 59e0433358081976d784c691cc7a370d6e4fb829
      https://github.com/Perl/perl5/commit/59e0433358081976d784c691cc7a370d6e4fb829
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 3e077098af1bc0ff3ce5c8b2be6980c138eccfbd
      https://github.com/Perl/perl5/commit/3e077098af1bc0ff3ce5c8b2be6980c138eccfbd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 018110abc719d4aea134acfc781865b69784c7f6
      https://github.com/Perl/perl5/commit/018110abc719d4aea134acfc781865b69784c7f6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: c351d0cc027a6bb042d7d26cbf2a7dac4cc0dbaf
      https://github.com/Perl/perl5/commit/c351d0cc027a6bb042d7d26cbf2a7dac4cc0dbaf
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: d3d342d9fe828aefa350074bc83278a92ae46671
      https://github.com/Perl/perl5/commit/d3d342d9fe828aefa350074bc83278a92ae46671
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: c379cb261bce106d44a668af9f15682ad8f9e963
      https://github.com/Perl/perl5/commit/c379cb261bce106d44a668af9f15682ad8f9e963
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 47545e9c7a9d46fae1e9300e96374e36b14045d2
      https://github.com/Perl/perl5/commit/47545e9c7a9d46fae1e9300e96374e36b14045d2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2493926bb88e6ac5bd2855e09626e97eacedad84
      https://github.com/Perl/perl5/commit/2493926bb88e6ac5bd2855e09626e97eacedad84
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2b9bc1ddbe73a0a7b5529d2126faa7dcfe1c8822
      https://github.com/Perl/perl5/commit/2b9bc1ddbe73a0a7b5529d2126faa7dcfe1c8822
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 1dfce96a38c0035a5082a441f3198e240b674969
      https://github.com/Perl/perl5/commit/1dfce96a38c0035a5082a441f3198e240b674969
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 8aac4ad8295e6d6c5e8873458b82a0b89719737b
      https://github.com/Perl/perl5/commit/8aac4ad8295e6d6c5e8873458b82a0b89719737b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 7a8107674d2428a0765a2dfe2296213bfc2ae52e
      https://github.com/Perl/perl5/commit/7a8107674d2428a0765a2dfe2296213bfc2ae52e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: fcae3fd55dd93e1143815d781807fb7fe92ff7cc
      https://github.com/Perl/perl5/commit/fcae3fd55dd93e1143815d781807fb7fe92ff7cc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 8196cc99ef7352446cc6bbd6884c54c9ac24484f
      https://github.com/Perl/perl5/commit/8196cc99ef7352446cc6bbd6884c54c9ac24484f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 58fcc6ebd4f27d87b43f37cbd7ceb5b4c8aa6cee
      https://github.com/Perl/perl5/commit/58fcc6ebd4f27d87b43f37cbd7ceb5b4c8aa6cee
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

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


  Commit: d833fefdb53ad246f159de6d07b6f7cd35722b2a
      https://github.com/Perl/perl5/commit/d833fefdb53ad246f159de6d07b6f7cd35722b2a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 42a90c3fca2dd1d005dfc234717fc570d1194497
      https://github.com/Perl/perl5/commit/42a90c3fca2dd1d005dfc234717fc570d1194497
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: e39680f554921ea366afcdbbb891e17739375a8a
      https://github.com/Perl/perl5/commit/e39680f554921ea366afcdbbb891e17739375a8a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 6a76a1f3143ce3e2a9fcc11f86cf853097406627
      https://github.com/Perl/perl5/commit/6a76a1f3143ce3e2a9fcc11f86cf853097406627
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M mg.c

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

Indent newly formed block from the previous commit.


  Commit: bf7e372549dc9b1ceb592959e2c6988ae7eaada6
      https://github.com/Perl/perl5/commit/bf7e372549dc9b1ceb592959e2c6988ae7eaada6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: a1bd72b3ff6b78f99fd7acf867441086f3fb9c97
      https://github.com/Perl/perl5/commit/a1bd72b3ff6b78f99fd7acf867441086f3fb9c97
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 5d28cc53eaee74f746af9dd8531ec3810c7b0cee
      https://github.com/Perl/perl5/commit/5d28cc53eaee74f746af9dd8531ec3810c7b0cee
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 232e812898bf724e98b20ae3fa58ffa54485aecd
      https://github.com/Perl/perl5/commit/232e812898bf724e98b20ae3fa58ffa54485aecd
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 8352fe204bcd44c5295c56db5886d5d67e73c334
      https://github.com/Perl/perl5/commit/8352fe204bcd44c5295c56db5886d5d67e73c334
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: fd3dc08b643d9ecdf52468300a19827606f26421
      https://github.com/Perl/perl5/commit/fd3dc08b643d9ecdf52468300a19827606f26421
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 89cc8d18a5944914ce0237326f3ff8c6533af9c2
      https://github.com/Perl/perl5/commit/89cc8d18a5944914ce0237326f3ff8c6533af9c2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 02f72a81d6a70c1d8b29dc094fc15852afdddf33
      https://github.com/Perl/perl5/commit/02f72a81d6a70c1d8b29dc094fc15852afdddf33
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: ef555e665b2322e474e875a8388a1c032edeb318
      https://github.com/Perl/perl5/commit/ef555e665b2322e474e875a8388a1c032edeb318
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 5530894ac09b36255b1975ca12c499259c54fae1
      https://github.com/Perl/perl5/commit/5530894ac09b36255b1975ca12c499259c54fae1
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: e1b4d40b945688db9f434bbd7f316c91ed16b53c
      https://github.com/Perl/perl5/commit/e1b4d40b945688db9f434bbd7f316c91ed16b53c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 1c129c7417a197d501b6e539d26e7e7a26de1c18
      https://github.com/Perl/perl5/commit/1c129c7417a197d501b6e539d26e7e7a26de1c18
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 0f13d10a2ca825a229b077ed033d252093181760
      https://github.com/Perl/perl5/commit/0f13d10a2ca825a229b077ed033d252093181760
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

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


  Commit: 846f98104e9ae1ce346069a13d662a95402f5766
      https://github.com/Perl/perl5/commit/846f98104e9ae1ce346069a13d662a95402f5766
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: b1c116a92a6815bcb53747fb35c185503c6d946c
      https://github.com/Perl/perl5/commit/b1c116a92a6815bcb53747fb35c185503c6d946c
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: fe5bb38be8d5c381c1de3f8ebfee8637582fbb08
      https://github.com/Perl/perl5/commit/fe5bb38be8d5c381c1de3f8ebfee8637582fbb08
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: f928af68067a345fe410fc78b51b72ca392eb96f
      https://github.com/Perl/perl5/commit/f928af68067a345fe410fc78b51b72ca392eb96f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

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


  Commit: b63a8120ac1c1bd8511ec86b25227d28edab2df0
      https://github.com/Perl/perl5/commit/b63a8120ac1c1bd8511ec86b25227d28edab2df0
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 007c1c514273ebbfb1506b33ceb76685a6191d46
      https://github.com/Perl/perl5/commit/007c1c514273ebbfb1506b33ceb76685a6191d46
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 679e95278cc304b7ba59bf14fe761e358511656a
      https://github.com/Perl/perl5/commit/679e95278cc304b7ba59bf14fe761e358511656a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 95e373e35391198961708de8818138e3fba3d7e2
      https://github.com/Perl/perl5/commit/95e373e35391198961708de8818138e3fba3d7e2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: bf2e4ec00b307613733fe96c1fa02afd6abe5e0a
      https://github.com/Perl/perl5/commit/bf2e4ec00b307613733fe96c1fa02afd6abe5e0a
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 66e85b380fb54b3a11334cd6a7191d7324608be1
      https://github.com/Perl/perl5/commit/66e85b380fb54b3a11334cd6a7191d7324608be1
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M lib/locale.t

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


  Commit: 1f00e01521b747bc97067d9839abf18525f62422
      https://github.com/Perl/perl5/commit/1f00e01521b747bc97067d9839abf18525f62422
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: d6c3d80aea2001b88fba77b763a41af639f52d3b
      https://github.com/Perl/perl5/commit/d6c3d80aea2001b88fba77b763a41af639f52d3b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 70c6a32e85a6e15980e0c1168afc010ebf2ae576
      https://github.com/Perl/perl5/commit/70c6a32e85a6e15980e0c1168afc010ebf2ae576
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: fa0c20281afecbd22c685ac7760670929891ad4f
      https://github.com/Perl/perl5/commit/fa0c20281afecbd22c685ac7760670929891ad4f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: c98cff9abfa00b50159f64d5c0d49d3732d7ae38
      https://github.com/Perl/perl5/commit/c98cff9abfa00b50159f64d5c0d49d3732d7ae38
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: eb0ca7bd16757b54bd91184857313687bf87c8de
      https://github.com/Perl/perl5/commit/eb0ca7bd16757b54bd91184857313687bf87c8de
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: d2d610b8e1fd4fe45e1ddad14a2ff830b7f84cc0
      https://github.com/Perl/perl5/commit/d2d610b8e1fd4fe45e1ddad14a2ff830b7f84cc0
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: d3c46f7486d8623479b4ba0fdadfc622f991a987
      https://github.com/Perl/perl5/commit/d3c46f7486d8623479b4ba0fdadfc622f991a987
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 3d7bacb9b1fa13a1bf6b4f89524d10b027e5f128
      https://github.com/Perl/perl5/commit/3d7bacb9b1fa13a1bf6b4f89524d10b027e5f128
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M perl.h

  Log Message:
  -----------
  perl.h: Reorder cpp branches

Disposing of the trivial case first makes things easier to read.


  Commit: 7379c3f7b5a08c6d331ccc1e1c1f7da703790db6
      https://github.com/Perl/perl5/commit/7379c3f7b5a08c6d331ccc1e1c1f7da703790db6
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 595dddd405678b8882f08173d7c767714d5d3bee
      https://github.com/Perl/perl5/commit/595dddd405678b8882f08173d7c767714d5d3bee
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 3c0acad20975b900d674d60e6969bdff9f4f56c1
      https://github.com/Perl/perl5/commit/3c0acad20975b900d674d60e6969bdff9f4f56c1
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 014aa6629c436937bb410d05f70445541affa86f
      https://github.com/Perl/perl5/commit/014aa6629c436937bb410d05f70445541affa86f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 6df61d0ba7fee715791bcd16456669898df2324e
      https://github.com/Perl/perl5/commit/6df61d0ba7fee715791bcd16456669898df2324e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 365644311c7d0107224b8e4ef31f17e408338180
      https://github.com/Perl/perl5/commit/365644311c7d0107224b8e4ef31f17e408338180
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: a86cef0dd9ef8680a076dd084b8b2fa906836268
      https://github.com/Perl/perl5/commit/a86cef0dd9ef8680a076dd084b8b2fa906836268
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 3247cafb2cf34411f66ef6febee9c0c625343b1d
      https://github.com/Perl/perl5/commit/3247cafb2cf34411f66ef6febee9c0c625343b1d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M perl.h

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

This simplifies slightly, and will allow further simplification


  Commit: e42c01e68ca0cac5307040783038ee8a66428574
      https://github.com/Perl/perl5/commit/e42c01e68ca0cac5307040783038ee8a66428574
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M perl.h

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

To enable future simplifications


  Commit: cafbb12563abbf9fa14915f3f72717b98af818e5
      https://github.com/Perl/perl5/commit/cafbb12563abbf9fa14915f3f72717b98af818e5
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: cad36a543ce9ede7f3d5f6df54d3658a6ee74c72
      https://github.com/Perl/perl5/commit/cad36a543ce9ede7f3d5f6df54d3658a6ee74c72
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: af320ebfbcaf7c00af771cf195ed34d3bbed38c9
      https://github.com/Perl/perl5/commit/af320ebfbcaf7c00af771cf195ed34d3bbed38c9
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: bd2e41b3f26fc047e75d6654466396cfc54e899b
      https://github.com/Perl/perl5/commit/bd2e41b3f26fc047e75d6654466396cfc54e899b
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M pp.c

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


  Commit: a9a9fa982d22914e681bde62266768ee5d191d32
      https://github.com/Perl/perl5/commit/a9a9fa982d22914e681bde62266768ee5d191d32
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 8bcf8fe3378fcb788f9cd23a742864ac718ee2a7
      https://github.com/Perl/perl5/commit/8bcf8fe3378fcb788f9cd23a742864ac718ee2a7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M inline.h
    M locale.c

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


  Commit: 6ce26189b210ed44556803314185685dc795fc40
      https://github.com/Perl/perl5/commit/6ce26189b210ed44556803314185685dc795fc40
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

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


  Commit: 559ddd444b8482dc0d53125cdd4343a10de6cd22
      https://github.com/Perl/perl5/commit/559ddd444b8482dc0d53125cdd4343a10de6cd22
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M locale.c

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


  Commit: 28e946d1353059b8b4fdac3348c243b27cd11bf7
      https://github.com/Perl/perl5/commit/28e946d1353059b8b4fdac3348c243b27cd11bf7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: fd6b56fecd7a8b563ba1ca20c5bc15bf0734f27d
      https://github.com/Perl/perl5/commit/fd6b56fecd7a8b563ba1ca20c5bc15bf0734f27d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 7ed88948e48b7c7351b248bf47f2b757385eab84
      https://github.com/Perl/perl5/commit/7ed88948e48b7c7351b248bf47f2b757385eab84
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 70292273adb3ff33827d7fcca16f95e6bef4b05f
      https://github.com/Perl/perl5/commit/70292273adb3ff33827d7fcca16f95e6bef4b05f
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M perl.h

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

So they are closer to related statements


  Commit: 6e8836ce5d647260eca1f92202e9c42e5b42d780
      https://github.com/Perl/perl5/commit/6e8836ce5d647260eca1f92202e9c42e5b42d780
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 3b04c936f09729b59567ba476e1f27b2e723e245
      https://github.com/Perl/perl5/commit/3b04c936f09729b59567ba476e1f27b2e723e245
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 9d437778ba8b3702652fbb141e802bcfaa7a4b06
      https://github.com/Perl/perl5/commit/9d437778ba8b3702652fbb141e802bcfaa7a4b06
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M pp_sys.c

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


  Commit: 340d1c3e536895d8e98bdc2c8f82ebfb4d5519fc
      https://github.com/Perl/perl5/commit/340d1c3e536895d8e98bdc2c8f82ebfb4d5519fc
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M win32/win32.c

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

These could have races.


  Commit: 9665226831ba4a620ed9b7f76a675c413ac70317
      https://github.com/Perl/perl5/commit/9665226831ba4a620ed9b7f76a675c413ac70317
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M util.c

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

per the Posix standard


  Commit: c4bd44287b2a5796f9f7d2865eac4b9d4e32d6d7
      https://github.com/Perl/perl5/commit/c4bd44287b2a5796f9f7d2865eac4b9d4e32d6d7
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

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

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


  Commit: 7b4603c5b56d9dee1966325a481574028033d126
      https://github.com/Perl/perl5/commit/7b4603c5b56d9dee1966325a481574028033d126
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M ext/POSIX/POSIX.xs

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


  Commit: d09301688c63c151066a834380e575aec6e38744
      https://github.com/Perl/perl5/commit/d09301688c63c151066a834380e575aec6e38744
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M cygwin/cygwin.c

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


  Commit: d0f50b5faf3f2ad9c5c5b154b9c519f062f2c6cf
      https://github.com/Perl/perl5/commit/d0f50b5faf3f2ad9c5c5b154b9c519f062f2c6cf
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 6885309d10a2c06f25cdf63a46a97b8fc900eeb8
      https://github.com/Perl/perl5/commit/6885309d10a2c06f25cdf63a46a97b8fc900eeb8
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 9365eb12c52137e1e78e188f434c239b098e1710
      https://github.com/Perl/perl5/commit/9365eb12c52137e1e78e188f434c239b098e1710
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 2860dff2805b3a98e47c98e9321c5e210acaaebb
      https://github.com/Perl/perl5/commit/2860dff2805b3a98e47c98e9321c5e210acaaebb
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 8847e26faf43a87dd311ea905418935fc4398b91
      https://github.com/Perl/perl5/commit/8847e26faf43a87dd311ea905418935fc4398b91
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: ee8b096ae004c51a49b20c13018501f3741e4120
      https://github.com/Perl/perl5/commit/ee8b096ae004c51a49b20c13018501f3741e4120
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: 7b0707f7438e6ab4a6ae4e3ea50ae50d49dc8c53
      https://github.com/Perl/perl5/commit/7b0707f7438e6ab4a6ae4e3ea50ae50d49dc8c53
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M pod/perlhacktips.pod

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


  Commit: c5b24cc0bf8ab2a68466ddc4ecbf3f6c1e89ab69
      https://github.com/Perl/perl5/commit/c5b24cc0bf8ab2a68466ddc4ecbf3f6c1e89ab69
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 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: b59f210d04012ee2c85b5a3373dbc9a309bed91d
      https://github.com/Perl/perl5/commit/b59f210d04012ee2c85b5a3373dbc9a309bed91d
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M hints/freebsd.sh

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


  Commit: 637e6f151c97b4604a0c25eb134b79445f384a35
      https://github.com/Perl/perl5/commit/637e6f151c97b4604a0c25eb134b79445f384a35
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M thread.h

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


  Commit: 7641f781e885e538b668ae6ae37256757324d90e
      https://github.com/Perl/perl5/commit/7641f781e885e538b668ae6ae37256757324d90e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M thread.h

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


  Commit: c63341602231fb665bdd31edfa0983028b1a785e
      https://github.com/Perl/perl5/commit/c63341602231fb665bdd31edfa0983028b1a785e
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M perl.h

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


  Commit: 9266616191e73b568088881dcfec1ce5aa554739
      https://github.com/Perl/perl5/commit/9266616191e73b568088881dcfec1ce5aa554739
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

  Changed paths:
    M cpan/Time-Piece/Piece.xs
    M handy.h
    M iperlsys.h
    M locale.c
    M perl.h
    M regen/reentr.pl
    M regexec.c
    M util.c

  Log Message:
  -----------
  Notes


  Commit: 934f1c61913189f645e9b442ee33dff17040b4e2
      https://github.com/Perl/perl5/commit/934f1c61913189f645e9b442ee33dff17040b4e2
  Author: Karl Williamson <khw@cpan.org>
  Date:   2021-03-22 (Mon, 22 Mar 2021)

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

  Log Message:
  -----------
  locks


Compare: https://github.com/Perl/perl5/compare/80493a77de53...934f1c619131



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