wcsnrtombs
==========

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

Gnulib module: wcsnrtombs

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, HP-UX 11, IRIX 6.5, Solaris 11.3, Cygwin 1.5.x, mingw, MSVC 14, Android 4.4.

  * This function cannot consume valid sequences of wide characters on some platforms: Solaris 11.4.

  * In C++ mode, the system's <wchar.h> defines std::wcsnrtombs but not ::wcsnrtombs on some platforms: Solaris 11 OpenIndiana.

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 c32snrtombs, provided by Gnulib module c32snrtombs, operates on 32-bit wide characters and therefore does not have this limitation.