gcc/testsuite/gcc.c-torture/execute/va-arg-11.c

   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 void abort (void);
   6 void exit (int);
   7
   8 static int
   9 foo (int a, ...)
  10 {
  11   va_list va;
  12   int i, res;
  13
  14   va_start (va, a);
  15
  16   for (i = 0; i < 4; ++i)
  17     (void) va_arg (va, int);
  18
  19   res = va_arg (va, int);
  20
  21   va_end (va);
  22
  23   return res;
  24 }
  25
  26 int
  27 main (void)
  28 {
  29   if (foo (5, 4, 3, 2, 1, 0))
  30     abort ();
  31   exit (0);
  32 }