#include <unistd.h>
            #include <signal.h>
            #if HAVE_SETRLIMIT
            # include <sys/types.h>
            # include <sys/time.h>
            # include <sys/resource.h>
            #endif
            #ifndef SIGSTKSZ
            # define SIGSTKSZ 16384
            #endif

            static union
            {
              char buffer[2 * SIGSTKSZ];
              long double ld;
              long u;
              void *p;
            } alternate_signal_stack;

            static void
            segv_handler (int signo)
            {
              _exit (0);
            }

            static int
            c_stack_action ()
            {
              stack_t st;
              struct sigaction act;
              int r;

              st.ss_flags = 0;
              /* Use the midpoint to avoid Irix sigaltstack bug.  */
              st.ss_sp = alternate_signal_stack.buffer + SIGSTKSZ;
              st.ss_size = SIGSTKSZ;
              r = sigaltstack (&st, 0);
              if (r != 0)
                return 1;

              sigemptyset (&act.sa_mask);
              act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND;
              act.sa_handler = segv_handler;
              #if FAULT_YIELDS_SIGBUS
              if (sigaction (SIGBUS, &act, 0) < 0)
                return 2;
              #endif
              if (sigaction (SIGSEGV, &act, 0) < 0)
                return 3;
              return 0;
            }
            static volatile int *
            recurse_1 (volatile int n, volatile int *p)
            {
              if (n >= 0)
                *recurse_1 (n + 1, p) += n;
              return p;
            }
            static int
            recurse (volatile int n)
            {
              int sum = 0;
              return *recurse_1 (n, &sum);
            }
            int
            main ()
            {
              int result;
              #if HAVE_SETRLIMIT && defined RLIMIT_STACK
              /* Before starting the endless recursion, try to be friendly
                 to the user's machine.  On some Linux 2.2.x systems, there
                 is no stack limit for user processes at all.  We don't want
                 to kill such systems.  */
              struct rlimit rl;
              rl.rlim_cur = rl.rlim_max = 0x100000; /* 1 MB */
              setrlimit (RLIMIT_STACK, &rl);
              #endif

              result = c_stack_action ();
              if (result != 0)
                return result;
              return recurse (0);
            }