5 POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/alarm.html}
9 Portability problems fixed by Gnulib:
13 Portability problems not fixed by Gnulib:
16 This function has no impact if <code>SIGALRM</code> is inherited as
17 ignored; programs should use <code>signal (SIGALRM, SIG_DFL)</code> if
18 it is important to ensure the alarm will fire.
20 Use of this function in multi-threaded applications is not advised.
22 This function is missing on some platforms:
23 mingw (2011), MSVC 14.
25 This function is conditionally declared in the non-standard
26 @code{<io.h>} header on some platforms:
27 mingw (2012 or newer).