[boost] Re: [typeof] help needed with porting

From: Arkadiy Vertleyb (vertleyb_at_[hidden])
Date: 2005-04-13 13:13:39

"Tobias Schwinger" <tschwinger_at_[hidden]> wrote

> I looked a little deeper into it (-; maybe your pessimism made me
curious).
>
> The preprocessor bug isn't a typeof issue:
>
> BOOST_PP_UNARY isn't working correctly with the preprocessor of BCC and
> always expands to nothing.

Yes, I remember Paul Mensonides warned me that I would have to make a
workaround for Borland...

> So I changed 1,2,3 to (class),(class)(class) and (class)(class)(class),
> respectively.
>
> Then there are a few problems parsing the registration code for integral
>   template parameters because of this bug:
>
>    template...
>    struct foo
>    {
>        typedef ... type;
>    //  typedef ... type ... another_type; // won't work
>        typedef foo self;
>        typedef ... self::type ... another_type; // works
>    };
>
> When fixed the registration parses correctly. It still has problems to
> parse the actual typeof expression. Unfortunately it completely blows up
> the parser (probably an internal limit is exceeded) and doesn't leave me
> with much error reporting.
> Is there a configuration option to scale down the size of the MPL-vector
> used for the encoding ?

BOOST_TYPEOF_LIMIT_SIZE

By default it's 50 -- try to set it to 15 -- should be enough to compile
main.cpp (but not test_compliant.cpp).

Regards,
Arkadiy