modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/va-arg-23.c (about)

     1  /* PR 9700 */
     2  /* Alpha got the base address for the va_list incorrect when there was
     3     a structure that was passed partially in registers and partially on
     4     the stack.  */
     5  
     6  #include <stdarg.h>
     7  
     8  struct two { long x, y; };
     9  
    10  void foo(int a, int b, int c, int d, int e, struct two f, int g, ...)
    11  {
    12    va_list args;
    13    int h;
    14  
    15    va_start(args, g);
    16    h = va_arg(args, int);
    17    if (g != 1 || h != 2)
    18      abort ();
    19  }
    20  
    21  int main()
    22  {
    23    struct two t = { 0, 0 };
    24    foo(0, 0, 0, 0, 0, t, 1, 2);
    25    return 0;
    26  }