https://svn.boost.org/svn/boost/trunk ........ r55146 | eric_niebler | 2009-07-24 10:22:50 -0700 (Fri, 24 Jul 2009) | 1 line fix bug with signed char ........ [SVN r55206]
https://svn.boost.org/svn/boost/trunk [SVN r53838]