[Boost-users] [mpl] possible bug in insert<set, x>

I'm having trouble with insert<> as called on a set. Specifically, it doesn't seem to be possible to iterate over sets built with insert<>. The following code, for example, works correctly (or at least, compiles without errors): --- typedef set m_set; typedef transform > >::type result; --- but the following (which as I understand it should be equivalent) fails to compile: --- typedef insert, double>::type, char>::type m_set; typedef transform > >::type result; --- The error consists basically of the compiler complaining there's no member type next_ in set. I've provided the full error log in an attachment (I'm using g++ 4.0.2 and Boost 1.33.0). The bug isn't specific to transform; I've encountered it when using other algorithms when they iterate over a set built with inserts. It's possible this problem relates to the problem discussed in this message: (http://thread.gmane.org/gmane.comp.lib.boost.devel/116988), which also concerns non-identical behavior for sets built with the two methods. I hope I'm not doing something stupid, I'm starting to feel like a broken record here...