Re: [boost] type_traits bugs detected by CWPro8?

From: Howard Hinnant (hinnant_at_[hidden])
Date: 2002-04-11 16:51:14

On Thursday, April 11, 2002, at 12:41  PM, David Abrahams wrote:

>     1. I'd like to have a few other people tell me I'm not crazy

I politely waited a long time.  The silence is deafening and the results 
are in. :-)

>     2. I think is_class can be reimplemented to avoid all of these
> problems using
>        this technique:
> http://groups.google.com/groups?hl=en&selm=7dc3b1ea.0203180455.2e0a6303%
> 40posting.google.com
>
>     3. Unfortunately, we'd need to keep the existing implementation of
> is_class for Pro7 support, since the sizeof() trick doesn't work there.

Fwiw, here's another possible implementation of is_class on Metrowerks:

#ifdef __MWERKS__

#include <msl_utility>

namespace boost
{
        using Metrowerks::is_class;
}

#endif

Using this technique, even boost:is_union will work.  But there may be 
some minor differences between Metrowerks type_traits and boost 
type_traits, such as facilities one lib has and the other doesn't.

-Howard