c++/7522: access by friend function's default argument

[bangerth@dealii.org]

Synopsis: access by friend function's default argument

State-Changed-From-To: open->feedback
State-Changed-By: bangerth
State-Changed-When: Wed Oct 30 15:32:03 2002
State-Changed-Why:
    I don't think this is a bug. 11.0.7 states:
    7 The  names  in  a  default argument expression (_dcl.fct.default_) are
      bound at the point of declaration, and access is checked at that point
      rather than at any points of use of the default argument expression.
    
    I don't see anything right away in the standard that for
    checking access to the names used in the default value has
    to happen inside the scope of the function that uses them,
    but common reasoning would suggest that the enclosing scope
    is used, in which case the befriended function is not
    taken into account.
    
    I'll put this report into feedback mode. Please let us know
    if you can follow my reasoning, or whether we shall reopen
    the report.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7522