Eric Niebler wrote:

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Unfortunately gcc 4.1.2 fails, still picking up the proto boost::proto::control::if_.

You'll have to send me your code.

<code received>

Ah, I see the problem. Proto::extends was pulling in boost::proto as an associated namespace in a very round-about sort of way. Should work now. And I'll add a work item to move /all/ UDTs out of the boost::proto namespace.

Sorry for the delay in getting back, a bit swamped. This looks good now with my compilers. Thanks for your help. Cheers Dan ___________________________________________________________ Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.htm...