1  #include <altivec.h>
       2  #include <stdarg.h>
       3  #include <stdio.h>
       4  
       5  typedef vector unsigned int T;
       6  
       7  extern void f1(int, ...);
       8  extern void f2(int, T, ...);
       9  extern void f3(int, T, T, ...);
      10  extern void f4(int, T, T, T);
      11  
      12  void printx(T a)
      13  {
      14    union {
      15      T v;
      16      unsigned int a[4];
      17    } u;
      18    u.v = a;
      19    printf("%d, %d, %d, %d\n", u.a[0], u.a[1], u.a[2], u.a[3]);
      20  }
      21  
      22  void f1(int a, ...)
      23  {
      24    va_list ap;
      25    va_start (ap, a);
      26    while (a-- > 0)
      27      printx(va_arg(ap, T));
      28    va_end (ap);
      29  }
      30  
      31  void f2(int a, T b, ...)
      32  {
      33    va_list ap;
      34    printx(b);
      35    a--;
      36    va_start (ap, b);
      37    while (a-- > 0)
      38      printx(va_arg(ap, T));
      39    va_end (ap);
      40  }
      41  
      42  void f3(int a, T b, T c, ...)
      43  {
      44    va_list ap;
      45    printx(b);
      46    a--;
      47    printx(c);
      48    a--;
      49    va_start (ap, c);
      50    while (a-- > 0)
      51      printx(va_arg(ap, T));
      52    va_end (ap);
      53  }
      54  
      55  void f4(int a, T b, T c,
      56  	T d)
      57  {
      58    printx(b);
      59    a--;
      60    printx(c);
      61    a--;
      62    printx(d);
      63    a--;
      64  }
      65  
      66  int main()
      67  {
      68    f4 (3,
      69        ((T){1,1,1,1}),
      70        ((T){2,2,2,2}), 
      71        ((T){3,3,3,3}));
      72    f3 (3,
      73        ((T){4,4,4,4}),
      74        ((T){5,5,5,5}), 
      75        ((T){6,6,6,6}));
      76    f2 (3,
      77        ((T){7,7,7,7}),
      78        ((T){8,8,8,8}), 
      79        ((T){9,9,9,9}));
      80    f1 (3,
      81        ((T){10,10,10,10}),
      82        ((T){11,11,11,11}), 
      83        ((T){12,12,12,12}));
      84    return 0;
      85  }
      86  
      87  /* { dg-output "1, 1, 1, 1(\n|\r\n|\r)" }
      88     { dg-output "2, 2, 2, 2(\n|\r\n|\r)" }
      89     { dg-output "3, 3, 3, 3(\n|\r\n|\r)" }
      90     { dg-output "4, 4, 4, 4(\n|\r\n|\r)" }
      91     { dg-output "5, 5, 5, 5(\n|\r\n|\r)" }
      92     { dg-output "6, 6, 6, 6(\n|\r\n|\r)" }
      93     { dg-output "7, 7, 7, 7(\n|\r\n|\r)" }
      94     { dg-output "8, 8, 8, 8(\n|\r\n|\r)" }
      95     { dg-output "9, 9, 9, 9(\n|\r\n|\r)" }
      96     { dg-output "10, 10, 10, 10(\n|\r\n|\r)" }
      97     { dg-output "11, 11, 11, 11(\n|\r\n|\r)" }
      98     { dg-output "12, 12, 12, 12(\n|\r\n|\r)" }
      99   */