1  /* { dg-do run } */
       2  /* { dg-options "-O2 -foptimize-sibling-calls" } */
       3  
       4  typedef struct {
       5    int data[4];
       6  } arr16_t;
       7  
       8  int result = 0;
       9  
      10  void func2(int i, int j, arr16_t arr)
      11  {
      12    result = (arr.data[0] != 1
      13  	    || arr.data[1] != 2
      14  	    || arr.data[2] != 3
      15  	    || arr.data[3] != 4);
      16  }
      17  
      18  void func1(int i, int j, int k, arr16_t a)
      19  {
      20    func2(i, j, a);
      21  }
      22  
      23  int main(int argc, const char *argv[])
      24  {
      25    arr16_t arr = {{1, 2, 3, 4}};
      26      
      27    func1(0, 0, 0, arr);
      28    return result;
      29  }
      30