#if defined(HAS_SIGACTION) && defined(SA_SIGINFO)
    {
	 struct sigaction oact;

	 if (sigaction(sig, 0, &oact) == 0 && oact.sa_flags & SA_SIGINFO) {
	      if (sip) {
		   HV *sih = newHV();
		   SV *rv  = newRV_noinc((SV*)sih);
		   /* The siginfo fields signo, code, errno, pid, uid,
		    * addr, status, and band are defined by POSIX/SUSv3. */
		   (void)hv_stores(sih, "signo", newSViv(sip->si_signo));
		   (void)hv_stores(sih, "code", newSViv(sip->si_code));
#if 0 /* XXX TODO: Configure scan for the existence of these, but even that does not help if the SA_SIGINFO is not implemented according to the spec. */
		   hv_stores(sih, "errno",      newSViv(sip->si_errno));
		   hv_stores(sih, "status",     newSViv(sip->si_status));
		   hv_stores(sih, "uid",        newSViv(sip->si_uid));
		   hv_stores(sih, "pid",        newSViv(sip->si_pid));
		   hv_stores(sih, "addr",       newSVuv(PTR2UV(sip->si_addr)));
		   hv_stores(sih, "band",       newSViv(sip->si_band));
#endif
		   EXTEND(SP, 2);
		   PUSHs((SV*)rv);
		   PUSHs(newSVpvn((char *)sip, sizeof(*sip)));
	      }

	 }
    }
#endif