David,

> On 16 Sep 2016, at 19:19, David Matthews <david.matth...@prolingua.co.uk> 
> wrote:
> 
> I've checked hamlet and mlton and they both reject it so I think in this case 
> Poly/ML is right and SML/NJ is wrong.  I can't point to the bit of the 
> definition that says that, though.

It's in Appendix C:  "Of [the type names listed in the initial static basis] 
all except exn and real admit equality".

Regards,

Rob.


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