"John Maddock" <john@johnmaddock.co.uk> writes:

...

Heh, not my department. I'm actually shocked that we're wedging is_abstract into the release branch.

Normally a really bad idea, but in this case it's straight addition: it has no impact on existing code, and I know that some folks who develop with the release versions are asking for it.

Sure, but it adds tests, which as we've seen subsequently add delays. It's a feature addition; no two ways about it. -- Dave Abrahams Boost Consulting www.boost-consulting.com