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@node fsync
@section @code{fsync}
@findex fsync

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

Gnulib module: fsync

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

Portability problems not fixed by Gnulib:
@itemize
@item
If the argument is a read-only file descriptor, this function fails
with @code{EBADF} on some platforms:
AIX 7.2, Cygwin 2.9.
@end itemize