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From: John Emmas (john_at_[hidden])
Date: 2021-08-24 08:25:45

On 23/08/2021 18:12, John Maddock via Boost-users wrote:
> I suspect you have a mangled platform header somewhere.

I found it !!!

FWIW the problematic file (ammintrin.h) gets #included quite early in
intrin.h like this:-

         #if (defined (_M_IX86) || defined (_M_X64)) &&
             #include <immintrin.h>
             #include <ammintrin.h>

I checked 'immintin.h' and realised it was a zero length file! I then
restored it from a recent backup and the problem's gone!! Many thanks
John and Edward for all your help with this,


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