strtok_r
========

POSIX specification:
 https://pubs.opengroup.org/onlinepubs/9699919799/functions/strtok_r.html

Gnulib module: strtok_r

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: mingw, MSVC 14.

  * This function crashes when invoked from code compiled with optimization enabled on some platforms: glibc 2.7.

Portability problems not fixed by Gnulib:

  * This function cannot work correctly on character strings in multibyte locales. Gnulib provides an alternative function mbstok_r that works on character strings in all locales.