id summary reporter owner description type status milestone component version severity resolution keywords cc 4580 result_of of iter_fold() and other fold variants broken anonymous Christopher Schmidt "a file only containing the single line: #include fails. that's because detail/fold.hpp always uses result_of::fold, instead of result_of::iter_fold, ... if iteration/fold.hpp is included by chance this can lead to hard other errors that are hard to track down. attaching patch" Bugs closed Boost 1.45.0 fusion Boost 1.44.0 Problem fixed