[Boost-users] [boost-users][fusion] tuple + io question

Hi, Is there a reason why fusion/tuple/tuple.hpp includes fusion/sequence/io.hpp? The "normal" boost::tuple, is split into tuple/tuple.hpp and tuple/tuple_io.hpp. I have the problem that just including *stream headers, make my program crash before main, because they rely on static variables that dynamically allocate memory, which isn't available before main. I fixed this for me by commenting out the include line, and now i'm only just wondering why this differs to boost::tuples? -- regards, dave