id summary reporter owner description type status milestone component version severity resolution keywords cc 10218 variant::apply_visitor does not work with move-only return types Christopher Moore ebf "Applying a visitor that returns a move-only type (such as std::unique_ptr<>) fails to compile. Tested with clang 3.4 and gcc 4.8 on OS X." Bugs closed To Be Determined variant Boost 1.55.0 Problem fixed nknotts@…