@node pthread_once
@section @code{pthread_once}
@findex pthread_once

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_once.html}

Gnulib module: pthread-once

Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Minix 3.1.8, mingw, MSVC 14.
But the provided replacement is just a dummy on some of these platforms:
Minix 3.1.8.
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize