On 29 August 2013 13:06, Umara Dissanayake wrote: > So sorry Jonathan I actually had the issue in stl_map.h > > 129 typedef _Rb_tree<key_type, value_type, _Select1st<value_type>, > 130 key_compare, _Pair_alloc_type> _Rep_type; > > I can't see where _Rb_tree is defined? stl_tree.h is not included by > stl_map? What am I missing? It's defined in <bits/stl_tree.h> <map> includes <bits/stl_tree.h> and then <bits/stl_map.h>