Re: is_base_and_derived broken in 1.30.0?

"Jeff Muller" <yg-boost-users@m.gmane.org> writes:

Originally posted this on 5/6, but it never showed up. Here goes again...

Hi,

The following code:

const bool isWS = ::boost::is_base_and_derived<std::wstring,std::wstring>::value;

sets isWS false with VS.NET 2003 (_MSC_VER=1310) in version 1.30.0 of the libraries. It is correct with version 1.27.0.

The semantics of is_base_and_derived changed to appear more accurate. You can get the old semantics by transforming is_base_and_derived<T,U> into is_convertible<T*,U*>. HTH, -- Dave Abrahams Boost Consulting www.boost-consulting.com