Movatterモバイル変換

[Moved to DR at the February, 2014 meeting.]

Proposed resolution (September, 2013):

This issue is resolved by the resolution ofissue 1691.

According to 6.5.4 [basic.lookup.argdep] paragraph 2,

IfT is a class type (including unions), its associated classesare: the class itself; the class of which it is a member, if any; and itsdirect and indirect base classes. Its associated namespaces are thenamespaces of which its associated classes are members.

Consider an example like

  struct A {    struct B {      struct C { };    };  };

A has one associated class, itself, and has the globalnamespace as its associated namespace.A::B has two associatedclasses,A and itself, and by virtue of its association withA, has the global namespace as its associated namespace.A::B::C has two associated classes,A::B and itself.However, because neitherA::B norA::B::C is amember of a namespace,A::B::C has no associated namespaces.

This seems like a defect.