Title
Use of template keyword with non-member templates
Status
cd1
Section
13.3 [temp.names]
Submitter
Daveed Vandevoorde

Created on 2000-05-04.00:00:00 last changed 162 months ago

Messages

Date: 2003-04-15.00:00:00

[Voted into WP at April 2003 meeting.]

Date: 2002-04-15.00:00:00

Proposed Resolution (4/02):

Elide the first use of the word "member" in 13.3 [temp.names] paragraph 5 so that its first sentence reads:

If a name prefixed by the keyword template is not the name of a member template, the program is ill-formed.
Date: 2004-09-10.00:00:00

Consider the following example:

    template<class T>
    struct X {
       virtual void f();
    };

    template<class T>
    struct Y {
       void g(X<T> *p) {
	  p->template X<T>::f();
       }
    };

This is an error because X is not a member template; 13.3 [temp.names] paragraph 5 says:

If a name prefixed by the keyword template is not the name of a member template, the program is ill-formed.

In a way this makes perfect sense: X is found to be a template using ordinary lookup even though p has a dependent type. However, I think this makes the use of the template prefix even harder to teach.

Was this intentionally outlawed?

History
Date User Action Args
2008-10-05 00:00:00adminsetstatus: wp -> cd1
2003-04-25 00:00:00adminsetmessages: + msg873
2003-04-25 00:00:00adminsetstatus: ready -> wp
2002-11-08 00:00:00adminsetstatus: review -> ready
2002-05-10 00:00:00adminsetmessages: + msg633
2002-05-10 00:00:00adminsetstatus: open -> review
2000-05-04 00:00:00admincreate