id summary reporter owner description type status milestone component version severity resolution keywords cc 3027 "read_graphviz() parser considers names ""b"" and b as two different names" Dmitry Douglas Gregor "The test case attached [http://article.gmane.org/gmane.comp.lib.boost.user/47676] " Bugs closed Boost 1.40.0 graph Boost 1.39.0 Problem fixed graphviz