SIG_PF           2266 gc/os_dep.c    #   define SIG_DFL (SIG_PF) (-1)
SIG_PF           2325 gc/os_dep.c    SIG_PF GC_old_bus_handler;
SIG_PF           2326 gc/os_dep.c    SIG_PF GC_old_segv_handler;	/* Also old MSWIN32 ACCESS_VIOLATION filter */
SIG_PF           2570 gc/os_dep.c                SIG_PF old_handler;
SIG_PF           2639 gc/os_dep.c    	    signal(SIGSEGV, (SIG_PF) GC_write_fault_handler);
SIG_PF           2700 gc/os_dep.c            act.sa_handler  = (SIG_PF)GC_write_fault_handler;
SIG_PF           2734 gc/os_dep.c          GC_old_segv_handler = signal(SIGSEGV, (SIG_PF)GC_write_fault_handler);
SIG_PF           2763 gc/os_dep.c              GC_old_segv_handler = (SIG_PF)(oldact.sa_sigaction);
SIG_PF           3613 gc/os_dep.c    static SIG_PF GC_old_bus_handler;
SIG_PF           3707 gc/os_dep.c            sa.sa_handler = (SIG_PF)GC_darwin_sigbus;
SIG_PF           3711 gc/os_dep.c            GC_old_bus_handler = (SIG_PF)oldsa.sa_handler;