[mercury-users] constrained polymorphic mode error

Tom Schrijvers Tom.Schrijvers at cs.kuleuven.ac.be
Sat Aug 10 04:14:18 AEST 2002

> That one looks to me at first glance like a compiler bug.
> When I tried to simplify the test case, the compiler threw up its hands
> ("Uncaught Mercury exception: Software Error: ... unify_inst failed"),
> which indicates that it is definitely a bit confused about these constructs.
> Thanks for reporting this -- we will look into it and see if we can
> come up with a fix.
> Note that this is a fairly new feature, which is not included in the
> latest stable release, so I guess it is not *too* suprising that it
> may have some bugs.

I am aware that it is not part of the stable release yet.
I have been looking at the stable release first and trying to get my closures
implemented there, but the modes wouldn't work out. So I was really glad
to see this feature in the current snapshot, because it looks like the
solution to my problems.

Thanks for the reply and for implementing this great feature!


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