[Perl/perl5] 9af310: Add some tests of non-ASCII UTF-8 handling of class.c

[Paul Evans via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 9af3108046af394b01d80a67e3ecca2e41904be4
  
https://github.com/Perl/perl5/commit/9af3108046af394b01d80a67e3ecca2e41904be4
  Author: Paul "LeoNerd" Evans 
  Date:   2024-02-12 (Mon, 12 Feb 2024)

  Changed paths:
M MANIFEST
A t/class/utf8.t

  Log Message:
  ---
  Add some tests of non-ASCII UTF-8 handling of class.c

[Perl/perl5] cfc8e8: locale_threads.t: Better handle weird locales

[Karl Williamson via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: cfc8e8a4ca7f7e04fee2c671bd8eec76b07bba1e
  
https://github.com/Perl/perl5/commit/cfc8e8a4ca7f7e04fee2c671bd8eec76b07bba1e
  Author: Karl Williamson 
  Date:   2024-02-12 (Mon, 12 Feb 2024)

  Changed paths:
M lib/locale_threads.t

  Log Message:
  ---
  locale_threads.t: Better handle weird locales

The previous code was generating bunches of uninitialized variable
warnings, due to 1) not checking for definedness early; 2) the loop
termination needs to be reevaluated each time because there is a
potential splice, shortening the array.

This only happens, I believe, on MingW not using UCRT.

[Perl/perl5] 941444: perlapi: Add detail to sv_setpv_bufsize()

[Karl Williamson via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 94144432cd6b311eddc4502f9ef0a0ab85184039
  
https://github.com/Perl/perl5/commit/94144432cd6b311eddc4502f9ef0a0ab85184039
  Author: Karl Williamson 
  Date:   2024-02-12 (Mon, 12 Feb 2024)

  Changed paths:
M sv.c

  Log Message:
  ---
  perlapi: Add detail to sv_setpv_bufsize()

[Perl/perl5] cd546b: avoid ext/XS-APItest/t/clone-with-stack.t crash

[iabyn via perl5-changes]

  Branch: refs/heads/davem/clone
  Home:   https://github.com/Perl/perl5
  Commit: cd546bd54a2be65514cec6198352fafda0cb0787
  
https://github.com/Perl/perl5/commit/cd546bd54a2be65514cec6198352fafda0cb0787
  Author: David Mitchell 
  Date:   2024-02-12 (Mon, 12 Feb 2024)

  Changed paths:
M ext/XS-APItest/APItest.xs

  Log Message:
  ---
  avoid ext/XS-APItest/t/clone-with-stack.t crash

a fresh_perl() TODO test in this file does something like

use XS::APItest;
BEGIN {
clone_with_stack();
}
print "ok\n";

As a standalone program, this code gives errors under valgrind,
and in ticket GH #21969 was causing "perl.exe has stopped working" on
Windows 8.

The clone_with_stack() XS function is fairly dodgy - it clones the whole
interpreter including stacks (i.e. what fork() emulation on windows
does), but then continues the RUNOPS loop to completion itself, using
the cloned interpreter, rather than relying on the caller to finish the
ops loop.

This doesn't work very well under BEGIN (hence why it's a TODO test),
but specifically, PL_curcop can be left pointing at an op which gets
freed , but then is later accessed anyway.

This commit resets PL_curcop to &PL_compiling to avoid crashes.