1 files changed, 2 insertions, 0 deletions

diff --git a/crates/ra_hir/src/ty/infer/expr.rs b/crates/ra_hir/src/ty/infer/expr.rs
index 1d6df2b7a..994a6d7e9 100644
--- a/crates/ra_hir/src/ty/infer/expr.rs
+++ b/crates/ra_hir/src/ty/infer/expr.rs
@@ -263,6 +263,8 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
                                 .clone()
                                 .subst(&a_ty.parameters)
                         }),
+                        // FIXME:
+                        TypeCtor::Adt(Adt::Union(_)) => None,
                         _ => None,
                     },
                     _ => None,