Bug#924517: perl: POSIX::mblen() broken

[Niko Tyni]

Package: perl
Version: 5.28.1-4
Tags: upstream patch

As reported in https://bugs.launchpad.net/bugs/1818953 POSIX::mblen()
is broken on threaded perls with glibc.

  % perl -MPOSIX=mblen -e 'mblen("a", 1)'
  perl: mbrtowc.c:105: __mbrtowc: Assertion `__mbsinit (data.__statep)' failed.
  zsh: abort (core dumped)  perl -MPOSIX=mblen -e 'mblen("a", 1)'

This is a 5.28 regression. I've reported it upstream with the attached
proposed patch, which should be trivial to backport to 5.28.

Will update this bug with the upstream ticket number once I get one.
-- 
Niko Tyni   ntyni at debian.org
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