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fix: sub-unification bug

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This commit is contained in:
Shunsuke Shibayama 2024-09-26 12:12:51 +09:00
parent ab06244b2b
commit 0ce9a1a772
1 changed files with 4 additions and 1 deletions
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5
crates/erg_compiler/context/unify.rs
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@ -1389,7 +1389,10 @@ impl<'c, 'l, 'u, L: Locational> Unifier<'c, 'l, 'u, L> {
self.sub_unify(maybe_sub, &sup)?;
}
let mut new_sub = self.ctx.union(maybe_sub, &sub);
if maybe_sub.qual_name() == sub.qual_name() && new_sub.has_unbound_var() {
if !sub.is_recursive()
&& maybe_sub.qual_name() == sub.qual_name()
&& new_sub.has_unbound_var()
{
let list = UndoableLinkedList::new();
if self
.ctx