------- Comment #4 from redi at gcc dot gnu dot org 2009-10-30 12:14 ------- (In reply to comment #2) > Isn't ::foo the using'd class from name?
No, see 7.3.1.2 [namespace.memdef]/3 - an unqualified friend declaration refers to a member of the innermost enclosing namespace. Names brought into a namespace scope by a using directive are not members of a namespace. > If not, how does one befriend a class > that comes from a using? You don't, you need to qualify it with the namespace -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36163
