Re: [boost] Re: enable_if and BOOST_NO_SFINAE

From: Douglas Paul Gregor (gregod_at_[hidden])
Date: 2003-12-03 17:32:09

On Thu, 4 Dec 2003, Peter Dimov wrote:
> David Abrahams wrote:
> > Jaakko Jarvi <jajarvi_at_[hidden]> writes:
> >
> >>
> >>>> #   if __GNUC__ == 2 && __GNUC_MINOR__ <= 95
> >>>
> >>> The regression tests seem to disagree that 2.95.3 can handle
> >>> enable_if, and in Function I'm using:
> >>>
> >>> #if BOOST_WORKAROUND(__GNUC__, < 3)
> >>
> >>>> #   if __GNUC__ == 2 && __GNUC_MINOR__ <= 95
> >>
> >> This should flag 2.95.3 as BOOST_NO_SFINAE ???
> >
> > I think these tests are equivalent.
>
> <= 2.95 means "we know it fails with 2.95; we assume that it doesn't fail
> with later versions."
>
> < 3 means "we know that the first version to support it is 3".

Heh, so what happens on GCC 2.96? <ducks>

        Doug