Polymorphism in regular variadic function

[Jarrett Billingsley]

"Bill Baxter" <dnewsgroup at billbaxter.com> wrote in message 
news:el52bq$2dcb$1 at digitaldaemon.com...
> Thanks Jarrett,
> This TypeInfo_Class thing seems to be undocumented.
>
> Incidentally it's a piece of cake with a variadic template, I just wanted 
> to see try it with a regular function first before going all templatey.
>
> I haven't tried your code, but it seems like your cast to Object in the 
> second suggestion is not going to be safe if the thing really isn't an 
> Object.  The following cast to Foo will try to do some vtable stuff I 
> guess, and that could result in a bad memory access, no?

Hmm.. I don't think it should.  TypeInfo_Class is, well, the typeinfo for a 
class, which all derive from Object, so getting the param as an Object 
shouldn't be a problem, should it?

..oh crap.  Interfaces also have a TypeInfo_Class.  :S  And since they 
aren't _required_ to be castable to object (i.e. COM interfaces)..

Yeah, the other way is necessary.