/* Test va_arg when the result is ignored and only the pointer increment   side effect is used.  */#include <stdarg.h>static intfoo (int a, ...){  va_list va;  int i, res;  va_start (va, a);  for (i = 0; i < 4; ++i)    (void) va_arg (va, int);  res = va_arg (va, int);  va_end (va);  return res;}intmain (void){  if (foo (5, 4, 3, 2, 1, 0))    abort ();  exit (0);}