[m-dev.] Solver type horribleness...

[Ralph Becket]

Peter Hawkins, Thursday,  2 March 2006:
> Hi...
> 
> I just thought of this bit of solver type horribleness. Consider this 
> program:
> 
> :- solver type fd_var.
> 
> :- pragma memo(cvar/2).
> :- pred cvar(int::in, fd_var::oa) is det.
> cvar(_, NewFooVar).  % NewFooVar is created automatically

I believe this is tantamount to an attempt to have a global
fd_var in your program!

Mark has pointed out a similar issue with functions returning
solver types, which I think needs extending to predicates
such as cvar.

-- Ralph
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