1  /* For the S/390 ABI parameter D is passed in GPR 5 and 6 and the latter is
       2     call-saved which prohibits sibling call optimization.  This must hold true
       3     also if the mode of the parameter is BLKmode.  */
       4  
       5  typedef struct
       6  {
       7    short x;
       8    char y[6];
       9  } t;
      10  
      11  extern t d;
      12  
      13  extern void bar (int a, int b, int c, t d);
      14  
      15  void foo (int a, int b, int c)
      16  {
      17    bar (a, b, c, d);
      18  }