@section @code{btowc}
@findex btowc
-POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/btowc.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/btowc.html}
Gnulib module: btowc
@itemize
@item
This function is missing on some platforms:
-HP-UX 11, IRIX 5.3, Solaris 2.6, mingw, Interix 3.5.
+Minix 3.1.8, HP-UX 11.00, IRIX 5.3, Solaris 2.6, mingw, Interix 3.5.
+@item
+This function returns WEOF for a NUL argument on some platforms:
+Cygwin 1.7.2.
+@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