1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdelete-null-pointer-checks -fdump-tree-vrp1" } */
       3  /* { dg-skip-if "" { keeps_null_pointer_checks } } */
       4  
       5  struct B { int x; };
       6  extern void g3(struct B *that)  __attribute__((nonnull));
       7  int f3(struct B *a)
       8  {
       9    g3(a);
      10    return a != (void *)0;
      11  }
      12  
      13  /* { dg-final { scan-tree-dump "return 1;" "vrp1" } } */