------- Comment #6 from rguenth at gcc dot gnu dot org  2009-06-20 13:04 -------
Confirmed (testcase from comment #4 with -std=c++0x).

It looks like a failure to honor SFINAE?

$ g++-4.4 -S -std=c++0x t.C
In file included from /usr/include/c++/4.4/bits/stl_algobase.h:67,
                 from /usr/include/c++/4.4/bits/char_traits.h:41,
                 from /usr/include/c++/4.4/string:42,
                 from t.C:13:
/usr/include/c++/4.4/bits/stl_iterator_base_types.h: In instantiation of
‘std::iterator_traits<X::C>’:
t.C:19:   instantiated from here
/usr/include/c++/4.4/bits/stl_iterator_base_types.h:127: error: no type named
‘iterator_category’ in ‘class X::C’
/usr/include/c++/4.4/bits/stl_iterator_base_types.h:128: error: no type named
‘value_type’ in ‘class X::C’
/usr/include/c++/4.4/bits/stl_iterator_base_types.h:129: error: no type named
‘difference_type’ in ‘class X::C’
/usr/include/c++/4.4/bits/stl_iterator_base_types.h:130: error: no type named
‘pointer’ in ‘class X::C’
/usr/include/c++/4.4/bits/stl_iterator_base_types.h:131: error: no type named
‘reference’ in ‘class X::C’


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |rejects-valid
   Last reconfirmed|0000-00-00 00:00:00         |2009-06-20 13:04:18
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40497