@node unlockpt
@subsection @code{unlockpt}
@findex unlockpt

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/unlockpt.html}

Gnulib module: unlockpt
@mindex unlockpt

Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
OpenBSD 3.8, Minix 3.1.8, mingw, MSVC 14.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function reports success for invalid file descriptors on some platforms:
NetBSD 5.1, Cygwin 1.7.9, Haiku.
@end itemize
