Re: [boost] [type_traits] VC9/TR1 failures vs Boost

From: Richard Webb (richard.webb_at_[hidden])
Date: 2008-01-24 05:01:47

John Maddock <john <at> johnmaddock.co.uk> writes:

> 
> > -tr1_is_base_of_test (http://tinyurl.com/2hzmae) is failing because
> > Boost thinks is_base_of<int, int> should be true and VC9 says it's
> > false.
> > n2157 has the example "is_base_of<int, int>::value    // false", so
> > VC looks correct here.
> 
> Sigh... it depends, as far as TR1 is concerned this started out false, and 
> then changed to true (in the final TR1 draft N1836 anyway).  However, the 
> std whitepaper has for the moment anyway changed it back again... well sort 
> of anyway.
> 

Just to follow this up - MS have confirmed that they consider 'false' 
to be the correct result here - see <http://tinyurl.com/2ne327>