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+@node wcrtomb
+@section @code{wcrtomb}
+@findex wcrtomb
+
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/wcrtomb.html}
+
+Gnulib module: wcrtomb
+
+Portability problems fixed by Gnulib:
+@itemize
+@item
+This function is missing on some platforms:
+Minix 3.1.8, HP-UX 11.00, IRIX 6.5, Solaris 2.6, mingw, Interix 3.5.
+@item
+This function returns 0 when the first argument is NULL in some locales on some platforms:
+AIX 4.3, OSF/1 5.1, Solaris 11 2010-11.
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
+accommodate all Unicode characters.
+@end itemize