wcsrtombs
=========

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

Gnulib module: wcsrtombs

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: Minix 3.1.8, HP-UX 11.00, IRIX 6.5, mingw.

  * This function does not ignore the length argument if the destination argument is NULL on some platforms: mingw.

  * This function updates the source pointer also if the destination argument is NULL on some platforms: HP-UX 11.

Portability problems not fixed by Gnulib:

  * On Windows and 32-bit AIX platforms, wchar_t is a 16-bit type and therefore cannot accommodate all Unicode characters. However, the Gnulib function c32srtombs, provided by Gnulib module c32srtombs, operates on 32-bit wide characters and therefore does not have this limitation.