-- BEGIN CODE --

struct A(T)
{
  static struct B {}
}

pragma(msg,__traits(parent,__traits(parent,__traits(parent,A!int.B))));

-- END CODE --

The resulting output is `A!int`.

If this is the intended behavior of the compiler, then it is problematic for
the implementation of `std.traits.fullyQualifiedName`, as the code there (line
340 of std/traits.d) ends up forward referencing itself into oblivion (and
therefore making fullyQualifiedName broken for instances of the above pattern).

I have a feeling it isn't intended, though.