wrapping functions with variadic-parameter wrappers

[Gor Gyolchanyan]

What's the best (least overhead and most portable and safe) way wrapping a
function into a variadic-parameter function?

For instance:

long foo(int i, char c)
{
   /// ...
}

long bar(...)
{
    return foo(/* ??? */);
}

This is necessary for losing the parameter types, but still having the
function callable with its expected parameters. I suspect this could be
done using inline assembler and knowledge of the D ABI to achieve near-zero
overhead.

The wrapper can include dynamic type checking using the automatically
passed _arguments array to ensure type safety.

This is useful for dynamic dispatching.

-- 
Bye,
Gor Gyolchanyan.
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