old_handler      2570 gc/os_dep.c                SIG_PF old_handler;
old_handler      2573 gc/os_dep.c                	old_handler = GC_old_segv_handler;
old_handler      2575 gc/os_dep.c                    old_handler = GC_old_bus_handler;
old_handler      2577 gc/os_dep.c                if (old_handler == SIG_DFL) {
old_handler      2587 gc/os_dep.c    		    (*old_handler) (sig, code, scp, addr);
old_handler      2596 gc/os_dep.c    		    (*(REAL_SIG_PF)old_handler) (sig, scp, context);
old_handler      2601 gc/os_dep.c    		        (*(REAL_SIG_PF)old_handler) (sig, code, sc);
old_handler      2604 gc/os_dep.c    		        (*(REAL_SIG_PF)old_handler) (sig, si, scp);
old_handler      2606 gc/os_dep.c    		        (*(REAL_SIG_PF)old_handler) (sig, sc);
old_handler      2612 gc/os_dep.c    		    (*(REAL_SIG_PF)old_handler) (sig, code, scp);
old_handler      2616 gc/os_dep.c    		    return((*old_handler)(exc_info));