Re: calling a template class' template member function from a template function

From:
Greg Herlihy <greghe@mac.com>
Newsgroups:
comp.lang.c++.moderated
Date:
Sat, 27 Oct 2007 19:08:24 CST
Message-ID:
<1193474627.838880.233940@v23g2000prn.googlegroups.com>
On Oct 26, 7:32 pm, Marian Ciobanu <ci...@inbox.com> wrote:

Since both GCC and Comeau give errors at the same point, chances are
that my code is wrong. If that's the case, I wonder how to make it
right. Also, I wonder if it is right that uncommenting the line with
the global "void f(int, float)" makes the errors go away.

So here's the code:

template <typename T>
struct X
{
    template <typename U> int f();

};

//template <typename T> void f(int, float); // any parameter(s) would do

template <typename T>
int g()
{
    X<T> tmp;
    return tmp.f<int>(); // error

}


The compiler needs some help in identifying a template specialization
inside another template specialization, such as f<int>() in this case:

     template <typename T>
     int g()
     {
         X<T> tmp;
         return tmp.template f<int>(); // OK
     }

Greg

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