id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 5214,Fixing duration conversion restrictions for VC9,David Deakins,viboes,The enable_if restrictions for implicit duration conversions in duration.hpp are currently ifdef'd out for VC9 since they cause a compiler error. I have slightly refactored the expression in a way that appears to resolve the VC9 compiler error and should be unlikely to introduce new issues. The patch is attached.,Patches,closed,Boost 1.47.0,chrono,Boost Development Trunk,Problem,fixed,,