[boost] [type_erasure] error in type-erased iterators

Subject: [boost] [type_erasure] error in type-erased iterators
From: Adam Wulkiewicz (adam.wulkiewicz_at_[hidden])
Date: 2013-04-26 10:49:57

Hi,

iterator< ::boost::no_traversal_tag, ...>
defines
constructible<T()>
requirement. This however musn't be meet in the case of incrementable 
and single-pass iterators. It should probably be moved to the
iterator< ::boost::forward_traversal_tag, ...>

Patch attached.

Regards,
Adam Wulkiewicz