[boost] Re: More metaprogramming problems with MSVC7.0

From: Andreas Huber (ah2003_at_[hidden])
Date: 2003-02-23 17:40:46

Dave,

"David Abrahams" <dave_at_[hidden]> wrote in message
news:ud6lihco0.fsf_at_boost-consulting.com...
> This looks seriously like ETI (early template instantiation) again.
> Unfortunately I'm not sure exactly what the fix is; Aleksey is the
> only person I know who really understands how to work around this.
> One thing you could try:
>
> template< class Derived,
>           class Context,
>           class Transitions = empty_list,
>           class InnerInitial = empty_list >
> class simple_state
>    : public mpl::identity<   // Here
>       typename state_base_type<
>          Derived, Context, Transitions, InnerInitial >::type
>       >::type                // Here
> {};

Unfortunately this doesn't help, 7.0 reports

d:\Data\StopWatch\StopWatch.cpp(58) : error C2516:
'boost::mpl::identity<T>::type' : is not a legal base class
with
[
T=state_base_type<Derived,Context,Transitions,InnerInitial>::type
]

But thanks anyway! I'll wait for Aleksey then...

Regards,

Andreas