[mercury-users] intermodule optimization and type classes

[Ralph Becket]

Michael Day, Wednesday,  2 January 2002:
> 
> Hi,
> 
> I get a compile error like this when I turn on intermodule optimization:
> 
> ints/vector.int:004: Error: typeclass `vector:vector/1' multiply defined.
> int2s/vector.int2:003:   Here is the previous definition of typeclass `vector:vector/1'.
> ints/vector.int:004:   The superclass constraints do not match.
> 
> Now, it really is only defined in one place, and it compiles and runs fine 
> when the option is turned off. Is this likely to be my fault? ie: a 
> symptom of incorrect module imports that is only picked up when 
> intermodule optimization is turned on?

Can you post the code?  That would help diagnosis.

- Ralph
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