Re: [boost] Re: enable_if and BOOST_NO_SFINAE

From: Peter Dimov (pdimov_at_[hidden])
Date: 2003-12-03 17:40:11

Douglas Paul Gregor wrote:
> 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>

That's kind of my point. ;-)