1  /* { dg-do run } */
       2  /* { dg-options "-O2 -fipa-pta -fno-tree-fre -fno-tree-sra -fdump-ipa-pta2-details -fdelete-null-pointer-checks" } */
       3  
       4  struct X {
       5      int i;
       6      void *p;
       7  };
       8  
       9  static void * __attribute__((noinline,noclone))
      10  foo(struct X *q, void *p)
      11  {
      12    struct X b;
      13    b.p = p;
      14    *q = b;
      15    return q->p;
      16  }
      17  extern void abort (void);
      18  int main()
      19  {
      20    struct X a, c;
      21    void *p;
      22    a.p = (void *)&c;
      23    p = foo(&a, &a);
      24    /* { dg-final { scan-ipa-dump "foo.result = { NULL a\[^ \]* c\[^ \]* }" "pta2" { target { ! keeps_null_pointer_checks } } } } */
      25    /* { dg-final { scan-ipa-dump "foo.result = { NONLOCAL a\[^ \]* c\[^ \]* }" "pta2" { target { keeps_null_pointer_checks } } } } */
      26    ((struct X *)p)->p = (void *)0;
      27    if (a.p != (void *)0)
      28      abort ();
      29    return 0;
      30  }
      31