1 files changed, 38 insertions, 0 deletions
diff --git a/tests/ui/hygiene/assoc_ty_bindings.rs b/tests/ui/hygiene/assoc_ty_bindings.rs
new file mode 100644
index 000000000..0567beab9
--- /dev/null
+++ b/tests/ui/hygiene/assoc_ty_bindings.rs
@@ -0,0 +1,38 @@
+// check-pass
+// ignore-pretty pretty-printing is unhygienic
+
+#![feature(decl_macro, associated_type_defaults)]
+
+trait Base {
+    type AssocTy;
+    fn f();
+}
+trait Derived: Base {
+    fn g();
+}
+
+macro mac() {
+    type A = dyn Base<AssocTy = u8>;
+    type B = dyn Derived<AssocTy = u8>;
+
+    impl Base for u8 {
+        type AssocTy = u8;
+        fn f() {
+            let _: Self::AssocTy;
+        }
+    }
+    impl Derived for u8 {
+        fn g() {
+            let _: Self::AssocTy;
+        }
+    }
+
+    fn h<T: Base, U: Derived>() {
+        let _: T::AssocTy;
+        let _: U::AssocTy;
+    }
+}
+
+mac!();
+
+fn main() {}