1  /* { dg-options "-Wunused" } */
       2  /* { dg-do compile } */
       3  
       4  int f1 (int *, int);
       5  int f2 (int *);
       6  int f3 (int *);
       7  
       8  int
       9  f4 (int x)
      10  {
      11    int a, n = 0;
      12    int b;
      13    for (a = f1 (&b, x); f2 (&b); (void) (a = f3 (&b)))
      14      n++;
      15    return n;
      16  }
      17  
      18  void
      19  f5 (int x)
      20  {
      21    int a;
      22    a = x;
      23    (void) (a = x);
      24  }
      25  
      26  void
      27  f6 (int x)
      28  {
      29    int a;	/* { dg-warning "set but not used" } */
      30    a = x;
      31  }
      32  
      33  void
      34  f7 (int x)
      35  {
      36    int a;
      37    ({ a = x; });
      38  }
      39  
      40  int
      41  f8 (int x)
      42  {
      43    int a;
      44    int b = ({ a = x; });
      45    return b;
      46  }
      47  
      48  int v;
      49  
      50  void
      51  f9 (int x)
      52  {
      53    int a;
      54    ({ v++, a = x; });
      55  }
      56  
      57  int
      58  f10 (int x)
      59  {
      60    int a;
      61    int b = ({ v++, a = x; });
      62    return b;
      63  }
      64  
      65  void
      66  f11 (int x)
      67  {
      68    int a;
      69    a = x;
      70    ({ v++, a; });
      71  }
      72  
      73  int
      74  f12 (int x)
      75  {
      76    int a;
      77    a = x;
      78    int b = ({ v++, a; });
      79    return b;
      80  }