src/test/stack_growth_after_syscallbuf.c

/* -*- Mode: C; tab-width: 8; c-basic-offset: 2; indent-tabs-mode: nil; -*- */

#include "util.h"

static int recurse(int count) {
  if (count == 0) {
    return 77;
  }
  return recurse(count - 1) * 99;
}

int main(void) {
  struct rlimit limit;
  int fd = open("/dev/zero", O_RDONLY);
  char ch;
  test_assert(fd >= 0);

  test_assert(0 == getrlimit(RLIMIT_STACK, &limit));
  limit.rlim_cur = RLIM_INFINITY;
  /* This could fail; that's OK. We just want to try to test an
     unlimited stack size. */
  setrlimit(RLIMIT_STACK, &limit);

  test_assert(1 == read(fd, &ch, 1));
  test_assert(1 == read(fd, &ch, 1));

  atomic_printf("recurse=%d\n", recurse(10000));

  atomic_puts("EXIT-SUCCESS");

  return 0;
}