Is D right for me?

[Walter Bright]

Iain Buclaw wrote:
> I'm actually rather curious how DMD plans on doing varargs in 64bit. Not least
> because I don't think their current method of "calculating" the address of the
> _argptr takes 64bit parameter passing into account.

I'm working on it now. It's a bitch.

The way varargs works for the C ABI is inefficient, clumsy, and frankly won't 
work for what D needs. So I'm going to have two varargs - one for extern (C) 
which is compatible with the C ABI and one for extern (D) which will push things 
on the stack as for 32 bits.

The only remaining nuisance for the D method is that some types have to be 
aligned more strictly than the stack. That means TypeInfo will have to be 
extended to provide an alignment size for the type.