Joshua Tolley <eggyknap(at)gmail(dot)com> writes:
> I've recently run into a problem with a datatype whose operators are
> based on functions not marked IMMUTABLE. Although there might be good
> reasons to have such a thing, it seems like it might be a valuable
> warning message if you create an operator based on an non-IMMUTABLE
> function. Comments?
No, it wouldn't be a good idea. There are plenty of such operators.
regards, tom lane