1  /* { dg-do compile } */
       2  
       3  typedef char * ptr_t;
       4  struct __jmp_buf_tag { int mask; };
       5  typedef struct __jmp_buf_tag sigjmp_buf[1];
       6  sigjmp_buf GC_jmp_buf;
       7  int __sigsetjmp (sigjmp_buf, int);
       8  void GC_set_and_save_fault_handler (void (*)(int));
       9  void GC_fault_handler(int sig)
      10  {
      11  }
      12  void GC_setup_temporary_fault_handler()     {
      13      GC_set_and_save_fault_handler(GC_fault_handler);
      14  }
      15  ptr_t GC_find_limit(ptr_t p)
      16  {
      17    GC_setup_temporary_fault_handler();
      18    if (__sigsetjmp (GC_jmp_buf, 1) == 0)
      19      for (;;)
      20        ;
      21  }