Hi! I'd like to draw your attention to an issue with boost::any_range that prevents it from being used with RTTI disabled. The problem is that boost::any_range indirectly uses boost::polymorphic_downcast which in turn uses dynamic_cast. Note that the dynamic_cast is only used to ensure the requested cast is valid and it's done only in non-release builds. It would be great if the check was simply skipped in RTTI-disabled environments, as it is done in release builds. This would result in loss of safety that boost::polymorphic_downcast provides but the pieces that use it would at least compile in RTTI-disabled environments. Would it be possible to fix this problem? If you wish I could create a ticket for this issue. BTW, there's a typo in the documentation of boost::any_range [1]. It mentions boost::forward_pass_traversal_tag, which does not exist. It should rather be boost::forward_traversal_tag. WBR, Adam Romanek [1] http://www.boost.org/doc/libs/1_55_0/libs/range/doc/html/range/reference/ran...