1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-optimized" } */
       3  
       4  void test1(void)
       5  {
       6    int *p = __builtin_malloc (sizeof (int) * 4);
       7    int *q = p;
       8    *q++ = 4;
       9    *q++ = 4;
      10    __builtin_free (p);
      11  }
      12  
      13  void test3(int b)
      14  {
      15    int *p = __builtin_malloc (sizeof (int) * 4);
      16    if (b)
      17      __builtin_free (p);
      18    *p = 5;
      19  }
      20  
      21  void test4(int b)
      22  {
      23    int *p = __builtin_malloc (sizeof (int) * 4);
      24    if (b)
      25      __builtin_free (p);
      26    *p = 5;
      27    __builtin_free (p);
      28  }
      29  
      30  /* { dg-final { scan-tree-dump-times "free" 0 "optimized" } } */
      31  /* { dg-final { scan-tree-dump-times "malloc" 0 "optimized" } } */