The following C code, when compiled with -lutil runs without reporting
any errors on both the sparc64 and i386 platforms on OpenBSD:

#include <util.h>
#include <utmp.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <stdio.h>
 
int main(void)
{
        int fd;
        struct winsize w;
 
        w.ws_row = 25;
        w.ws_col = 80;
        w.ws_xpixel = w.ws_ypixel = 0;
 
        forkpty(&fd, NULL, NULL, NULL);
        if (ioctl(fd,TIOCSWINSZ, &w) == -1)
                perror("ioctl");
        return 0;
}