View Compilation Error

GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_iterator_base_types.h: In instantiation of `std::iterator_traits<node>':
1_277_2177_6002.cpp:18:   instantiated from here
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_iterator_base_types.h:129: error: no type named `iterator_category' in `struct node'
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_iterator_base_types.h:130: error: no type named `value_type' in `struct node'
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_iterator_base_types.h:131: error: no type named `difference_type' in `struct node'
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_iterator_base_types.h:132: error: no type named `pointer' in `struct node'
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_iterator_base_types.h:133: error: no type named `reference' in `struct node'