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This commit is contained in:
Jack Huey 2021-05-15 12:12:56 -04:00
parent fb6cec440a
commit d2554776b8
1 changed files with 3 additions and 0 deletions
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compiler/rustc_middle/src/infer/unify_key.rs
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@ -48,6 +48,9 @@ impl<'tcx> UnifyValue for UnifiedRegion<'tcx> {
fn unify_values(value1: &Self, value2: &Self) -> Result<Self, NoError> {
Ok(match (value1.0, value2.0) {
// Here we can just pick one value, because the full constraints graph
// will be handled later. Ideally, we might want a `MultipleValues`
// variant or something. For now though, this is fine.
(Some(_), Some(_)) => *value1,
(Some(_), _) => *value1,