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Unbound effect variables in type aliases when effect sugar is enabled #1137

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dhil opened this issue May 2, 2022 · 0 comments

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dhil commented May 2, 2022

Enabling

effect_sugar=true
effect_sugar_policy="presence_omit,alias_omit,contract_operation_arrows,arrows_curried_hide_fresh"

causes the following code produces an internal error.

links> typename Id(a, e::Eff) = (a) { |e}-> a;
Id = a,b::Eff.(a) -b-> a
links> sig id : Id(a, { |e}) fun id(x) { x };
***: Error: Links_core.Notfound.NotFound("7660 (in Map.find)")

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dhil self-assigned this

dhil added the bug label

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