c++/3979: An update to problem #3971

[Dennis Kennedy]

Why does the conversion from A<T> to B<T> fail??  In class B there is the
conversion operator:
B(const A<T> &X ) : A<T>(X) {;}
Thanks,
Dennis

-----Original Message-----
From: lerdsuwa@gcc.gnu.org [ mailto:lerdsuwa@gcc.gnu.org ]
Sent: Friday, August 10, 2001 7:20 AM
To: gcc-bugs@gcc.gnu.org; gcc-prs@gcc.gnu.org; kennedy@roguewave.com;
nobody@gcc.gnu.org
Subject: Re: c++/3979: An update to problem #3971


Synopsis: An update to problem #3971

State-Changed-From-To: open->closed
State-Changed-By: lerdsuwa
State-Changed-When: Fri Aug 10 07:20:00 2001
State-Changed-Why:
    Not a bug.  The only possible match (using template
    argument deduction rule) is:
      template< class T> 
      inline A<T> operator *(const A<T> &a, const A<T> &b);
    and the conversion from B<T> to A<T> fails.  The function
     template< class T>
     inline B<T> operator *(const B<T> &a, const B<T> &b);
    is not considered (See section 14.8.2.1 para 3 in the
    standard).

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view&pr=3979&database=gcc