Backport "Fix #18649: Use loBound of param types when materializing a context function." to LTS #20645
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…unction. Since the param types come from type arguments to `ContextFunctionN[...]`, nothing prevents them a priori from being wildcard type params, i.e., `TypeBounds`. However, that is not a valid type to give to a concrete term param. We can arbitrarily choose any type that conforms to the bounds, which realistically means one of the two bounds. Since type inference already chooses the lower bound when explicitly writing the context function, we align and choose the lower bound when materializing it. [Cherry-picked 242e68f]
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No regressions detected in the community build up to lts-18731. |
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Backports #18651 to the LTS branch.
PR submitted by the release tooling.
[skip ci]