Bug#204580: g++: unexpected output using variadic functions in classes

[Falk Hueffner <falk.hueffner@student.uni-tuebingen.de>]

"Frank B. Brokken" <f.b.brokken@rc.rug.nl> writes:

> class Foo
> {
>     va_list list;
> 
>     public:
>         Foo(int n, ...)
>         {   
>             va_start(list, n);
>         }
>         Foo(Foo const &other)
>         {
>             va_copy(list, other.list);
>         }
>         ~Foo()
>         {
>             va_end(list);
>         }
>         void bar() const
>         {
>             va_list l(list);
>             cout << "Saw " << va_arg(l, int) << endl;
>         }
> };

This is still invalid, since va_end is not in the same function as
va_start.

I suspect that it is simply not possible to do what you want, since,
after all, the va_list does not actually contain a copy of all passed
parameters, but is basically just a pointer into the stack.

-- 
	Falk