c++/3708: static_cast between classes finds ambiguous base conversion

[nathan@gcc.gnu.org]

Old Synopsis: Attempt to expand base class template when explicit exact match present in current class.
New Synopsis: static_cast between classes finds ambiguous base conversion

State-Changed-From-To: open->analyzed
State-Changed-By: nathan
State-Changed-When: Tue Oct 22 03:57:33 2002
State-Changed-Why:
    confirmed. I have attached a more easily readable sample

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3708