old_bus_act       703 gc/os_dep.c    	    static struct sigaction old_bus_act;
old_bus_act       734 gc/os_dep.c    	        (void) sigaction(SIGBUS, 0, &old_bus_act);
old_bus_act       743 gc/os_dep.c    		    (void) sigaction(SIGBUS, &act, &old_bus_act);
old_bus_act       779 gc/os_dep.c    	      (void) sigaction(SIGBUS, &old_bus_act, 0);