basicTypes/Var.lhs:194: Non-exhaustive patterns in function readMutTyVar

[Jeffrey R. Lewis]

Simon Peyton-Jones wrote:

> I havn't seen this one myself, but I defer to Jeff.
>
> Jeff: any chance you can look at this?  We want to put out 4.08.2 shortly,
> so it would be nice to fix this.

I'll certainly have a look, but, Thomas, I'll need more to go on.  Also, I wouldn't count on much from the implementation of functional dependencies in 4.08 - it was only partially implemented at the time that release was snapshotted.

--Jeff