1  /* { dg-do compile } */
       2  /* { dg-options "-O -Wunused-but-set-variable" } */
       3  
       4  int main(void)
       5  {
       6  	const int i = 0;
       7  	switch(i)
       8  	{
       9  	default: break;
      10  	}
      11  }
      12  
      13