[Bug c++/21092] friend inaccessibility

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2005-04-18 20:34 -------
And the answer to the original question: even though gcc handled it as this 
in the past (incorrectly), a friend declaration is not a declaration. In 
other words, if a name is not declared before, but first seen in a friend 
declaration, then this does not make this name known. This is the problem 
you run against: class Y is only marked for friendship in the friend 
declaration, 
for when the class is actually declared later on. However, it is still 
undeclared once you get to the function declaration. 
 
W. 

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21092