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-rw-r--r--crates/hir/src/lib.rs4
-rw-r--r--crates/ide/src/highlight_related.rs16
2 files changed, 20 insertions, 0 deletions
diff --git a/crates/hir/src/lib.rs b/crates/hir/src/lib.rs
index e08dd8dadeb..f5324208c9a 100644
--- a/crates/hir/src/lib.rs
+++ b/crates/hir/src/lib.rs
@@ -2807,6 +2807,10 @@ impl Type {
                     let subst = TyBuilder::subst_for_def(db, id, None).fill_with_unknown().build();
                     Some(subst)
                 }
+                ItemContainerId::ImplId(id) => {
+                    let subst = TyBuilder::subst_for_def(db, id, None).fill_with_unknown().build();
+                    Some(subst)
+                }
                 _ => None,
             },
             _ => None,
diff --git a/crates/ide/src/highlight_related.rs b/crates/ide/src/highlight_related.rs
index 1bdd626f1e8..540a115832d 100644
--- a/crates/ide/src/highlight_related.rs
+++ b/crates/ide/src/highlight_related.rs
@@ -1376,4 +1376,20 @@ fn main() {
 "#,
         );
     }
+
+    #[test]
+    fn test_assoc_type_highlighting() {
+        check(
+            r#"
+trait Trait {
+    type Output;
+      // ^^^^^^
+}
+impl Trait for () {
+    type Output$0 = ();
+      // ^^^^^^
+}
+"#,
+        );
+    }
 }