template <class T> struct A {};
template <class T> struct B {};
template <class T> A<B<T>> fn() { return A<B<T>>(); }

int main() {
//Error: malformed template declaration
fn<int>();
}

Richard

On Sat, 28 Jun 2003 21:29:06 +0000 (UTC), Richard Grant wrote:
> template <class T> struct A {};
> template <class T> struct B {};
> template <class T> A<B<T>> fn() { return A<B<T>>(); }

should be:
template <class T> A<B<T> > fn() { return A<B<T> >(); }

> int main() {
> //Error: malformed template declaration
> fn<int>();
> }


Well, the error message could be a bit clearer, but your code is not legal C++.


bye, Christof

-- 
http://cmeerw.org                                 JID: cmeerw@jabber.at mailto cmeerw at web.de

...and what have you contributed to the Net?

In article <bdm0cd$2jkm$1@digitaldaemon.com>, Christof Meerwald says...
>
>On Sat, 28 Jun 2003 21:29:06 +0000 (UTC), Richard Grant wrote:
>> template <class T> struct A {};
>> template <class T> struct B {};
>> template <class T> A<B<T>> fn() { return A<B<T>>(); }
>
>should be:
>template <class T> A<B<T> > fn() { return A<B<T> >(); }

So the extra space helps identify the type? That's a little odd. But is in keeping with typeid having a space as I pointed out some time ago.

>
>> int main() {
>> //Error: malformed template declaration
>> fn<int>();
>> }
>
>
>Well, the error message could be a bit clearer, but your code is not legal C++.

What is illegal about the code above?

Richard

In article <bdn8d1$nf3$1@digitaldaemon.com>

Richard Grant says...
not very much ;)

ok forget about that last post. And thanks for correction.

Richard

The compiler uses "maximal munch" i.e.. grabs as many characters as possible to form a token, and ">>" is a valid operator. So, to use <T> followed by another >, you must leave a space in between.

Rajiv


"Richard Grant" <fractal@clark.net> wrote in message news:bdndm0$t6h$1@digitaldaemon.com...
> In article <bdn8d1$nf3$1@digitaldaemon.com>
>
> Richard Grant says...
> not very much ;)
>
> ok forget about that last post. And thanks for correction.
>
> Richard
>
>