id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 9679,documentation about bidirectional iterator,Stefaan Verstraeten ,jsiek,"http://www.boost.org/doc/libs/1_55_0/doc/html/BidirectionalIterator.html states: Precondition of predecrement: ""i is incrementable (not off-the-end) and some dereferenceable iterator j exists such that i == ++j"" This can be interpreted that end() iterator can not be decremented, which according to other sources you can do. http://stackoverflow.com/a/5322234/104774 references ""ISO/IEC 14882:2003 C++ Standard 23.1.1/12 – Sequences"" ",Bugs,new,To Be Determined,concept_check,Boost 1.54.0,Cosmetic,,,