1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-optimized" } */
       3  
       4  void bar (void *);
       5  void foo(unsigned n)
       6  {
       7    void *p = __builtin_malloc (n);
       8    if (p)
       9      {
      10        bar (p);
      11        __builtin_free (p);
      12        p = 0;
      13      }
      14    __builtin_free (p);
      15  }
      16  
      17  /* We should remove the redundant call to free.  */
      18  
      19  /* { dg-final { scan-tree-dump-times "free" 1 "optimized" } } */