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Richard Feldman 2022-08-12 15:24:09 -04:00
parent af8a81de9f
commit 97e2900bf5
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84 changed files with 174 additions and 174 deletions
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4
crates/compiler/unify/src/unify.rs
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@ -1005,7 +1005,7 @@ fn unify_lambda_set<M: MetaCollector>(
FlexVar(_) => {
if M::UNIFYING_SPECIALIZATION {
// TODO: It appears that this can happen in well-typed, reasonable programs, but it's
// open question as to why! See also https://github.com/rtfeldman/roc/issues/3163.
// open question as to why! See also https://github.com/roc-lang/roc/issues/3163.
let zero_lambda_set = LambdaSet {
solved: UnionLabels::default(),
recursion_var: OptVariable::NONE,
@ -1209,7 +1209,7 @@ fn separate_union_lambdas<M: MetaCollector>(
// Lambda sets are effectively tags under another name, and their usage can also result
// in the arguments of a lambda name being recursive. It very well may happen that
// during unification, a lambda set previously marked as not recursive becomes
// recursive. See the docs of [LambdaSet] for one example, or https://github.com/rtfeldman/roc/pull/2307.
// recursive. See the docs of [LambdaSet] for one example, or https://github.com/roc-lang/roc/pull/2307.
//
// Like with tag unions, if it has, we'll always pass through this branch. So, take
// this opportunity to promote the lambda set to recursive if need be.