[Bug libstdc++/22634] partial_sum is too constrained

[chris at bubblescope dot net]

------- Additional Comments From chris at bubblescope dot net  2005-07-25 09:03 -------
I'm not personally 100% sure that this should be "fixed", I've used partial_sum where I've assumed this 
behaviour, and adding the things in the "output type" would have broken...

I've attached the work-around I personally use to this kind of problem, which is wrapping the iterator in 
another iterator which changes the value_type. Feel free to use this code if you like.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22634