Hi Pavel ----- Mensaje original ----- De: Pavel Vozenilek <pavel_vozenilek@hotmail.com> Fecha: Lunes, Noviembre 29, 2004 11:39 pm Asunto: [boost] Re: Re: additional test for is_abstract type trait

"Joaquín Mª López Muñoz" wrote:

...

John, now that you're at is_abstract, I wonder whether you could consider adding some workaround in is_abstract.hpp making boost::is_abstract return unconditionally false for those compilers known not to work for it. You can read about the origin of this request at:

http://aspn.activestate.com/ASPN/Mail/Message/boost/2209389

Wouldn't it be better to have macro like BOOST_NO_XYZ defined for failing compilers instead?

Oh, yes, this is probably more sensible. No matter the final implementation, though, what we need is some direct support from is_abstract.hpp to help the programmer avoid the crashing compilers. Otherwise, the guarding macros, i.e. the actual knowledge about what compilers do support boost::is_abstract, will be duplicated and scattered across the Boost/user source code. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo