Re: boost/rational.hpp and VS2019

From: John Maddock (jz.maddock_at_[hidden])
Date: 2021-08-23 11:47:33

On 23/08/2021 09:23, John Emmas via Boost-users wrote:
> On 18/08/2021 14:11, Edward Diener via Boost-users wrote:
>> On 8/18/2021 5:03 AM, John Emmas via Boost-users wrote:
>>>
>>> Safari seemed a bit happier so I installed ver 1.74 and eventually 
>>> ver 1.77 - but they both give me the same error list :-(
>>>
>>> So I'm guessing this might be a Visual Studio issue.  Edward - do 
>>> you happen to know which version of VS2019 you're running?
>>
>> I am running VS2019 16.10.3.
>>
>
> Hi Edward, there's been a development here after I flagged this up to 
> Microsoft....
>
> I sent them a small test project and it seems that for VS2019 16.11.0 
> the problem only happens for an x86 build (if I build as x64 it works 
> okay).  Going back to the command line you sent me last week, is there 
> some way I can adapt it to force an x86 build and alternatively, an 
> x64 build?  I could then swap between them and see if there's any 
> difference here.  And it looks like John Maddock might be onto 
> something when he suggested modifying 
> 'boost/integer/common_factor_rt.hpp'.  I'd be happy to try modifying 
> it temporarily if John can suggest something...  Thanks,

Works for me with VS2019 16.11.1 and building for x86.

What happens if you just do a:

#include <intrin.h>

?

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