id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
8800	result_of.hpp:174: error: invalid use of incomplete type	cowwoc@…	No-Maintainer	"1. On OSX 10.8.4, invoke ""./b2 toolset=darwin -j 4""
2. Build fails with:

./boost/utility/result_of.hpp:174: error: invalid use of incomplete type ‘struct boost::log::v2_mt_posix::expressions::aux::unary_function_terminal<boost::log::v2_mt_posix::expressions::has_attribute<void> >::result<const boost::log::v2_mt_posix::expressions::aux::unary_function_terminal<boost::log::v2_mt_posix::expressions::has_attribute<void> > ()(boost::phoenix::vector2<boost::phoenix::vector2<const boost::phoenix::actor<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::log::v2_mt_posix::expressions::aux::unary_function_terminal<boost::log::v2_mt_posix::expressions::has_attribute<void> > >, 0l> >*, const boost::log::v2_mt_posix::attribute_value_set&>&, const boost::phoenix::default_actions&>)>’

3. According to ""l_r"" on the #boost IRC channel, he has also reproduced this issue on ""xLinux laptop 3.8.0-25-x86_64 x86_64 GNU/Linux, GCC 4.7.3""
4. I have set severity to ""Showstopper"" because there is no known workaround and Boost cannot be built."	Bugs	new	To Be Determined	utility	Boost 1.54.0	Showstopper