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/*
* Copyright (c) 2009 by
* Ralf Corsépius, Ulm, Germany. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software
* is freely granted, provided that this notice is preserved.
*/
#include <signal.h>
int
main (void)
{
sigset_t set;
int status;
status = sigaddset (&set, 21);
return status;
}
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