id summary reporter owner description type status milestone component version severity resolution keywords cc 4511 MSVC10 warning due to lack of placement operator delete boost.lists@… Andreas Huber "Defining optional leads to a warning (MSVC10): ""warning C4291: 'void *boost::statechart::event::operator new(size_t,void *)' : no matching operator delete found; memory will not be freed if initialization throws an exception""" Bugs closed Boost 1.46.0 statechart Boost 1.44.0 Cosmetic fixed warning