@node alarm
@subsection @code{alarm}
@findex alarm

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

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function has no impact if @code{SIGALRM} is inherited as
ignored; programs should use @code{signal (SIGALRM, SIG_DFL)} if
it is important to ensure the alarm will fire.
@item
Use of this function in multi-threaded programs is not advised.
@item
This function is missing on some platforms:
mingw (2011), MSVC 14.
@item
This function is conditionally declared in the non-standard
@code{<io.h>} header on some platforms:
mingw (2012 or newer).
@end itemize
