id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 8690,duration_units_default - lost return types constness in overridden methods,tmmikolajczyk@…,viboes,"When implementing custom chrono duration units by deriving from duration_units_default<> I noticed the ""get_valid_units_start"" and ""get_valid_units_end"" is declared to return mutable string_type pointer however the base class (duration_units<>) declares them as immutable. The attached patch has been generated with the ""git diff --no-prefix"" command (I have boost svn repo cloned with the git-svn tool).",Patches,closed,Boost 1.54.0,chrono,Boost 1.53.0,Problem,fixed,,