1  /* Test va_arg when the result is ignored and only the pointer increment
       2     side effect is used.  */
       3  #include <stdarg.h>
       4  
       5  static int
       6  foo (int a, ...)
       7  {
       8    va_list va;
       9    int i, res;
      10  
      11    va_start (va, a);
      12  
      13    for (i = 0; i < 4; ++i)
      14      (void) va_arg (va, int);
      15  
      16    res = va_arg (va, int);
      17  
      18    va_end (va);
      19  
      20    return res;
      21  }
      22  
      23  int
      24  main (void)
      25  {
      26    if (foo (5, 4, 3, 2, 1, 0))
      27      abort ();
      28    exit (0);
      29  }