1  /* { dg-do link }  */
       2  /* { dg-options "-O2 -fdump-tree-vrp1" }  */
       3  
       4  void link_error (void);
       5  
       6  static inline void do_thing(char *s, int *p, char *q)
       7  {
       8    	/* This should be folded away.  */
       9          if (s == 0 || q == 0)
      10                  link_error ();
      11  
      12  	/* This should not be folded as 'p' is not marked nonnull.  */
      13  	if (p)
      14  	  	*p = 3;
      15  }
      16  
      17  void __attribute__((nonnull (1, 3))) do_other_thing(char *s, int *p, char *q)
      18  {
      19          do_thing(s, p, q);
      20  }
      21  
      22  int i;
      23  
      24  int
      25  main()
      26  {
      27    do_other_thing ("xxx", &i, "yyy");
      28  }
      29  
      30  /* { dg-final { scan-tree-dump-times "Folding predicate p_.*" 0 "vrp1" } } */