@item
This function is missing on some platforms:
HP-UX 11.00, IRIX 5.3, Solaris 2.6, mingw, Interix 3.5.
+@item
+This function does not return WEOF for an EOF argument on some platforms:
+IRIX 6.5.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
-On Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
+On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
accommodate all Unicode characters.
@end itemize