1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle-2.rs b/src/test/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle-2.rs
new file mode 100644
index 000000000..621c4ea6e
--- /dev/null
+++ b/src/test/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle-2.rs
@@ -0,0 +1,18 @@
+#![feature(type_alias_impl_trait)]
+
+type Foo = impl PartialEq<(Foo, i32)>;
+
+struct Bar;
+
+impl PartialEq<(Foo, i32)> for Bar {
+//~^ ERROR cannot implement trait on type alias impl trait
+    fn eq(&self, _other: &(Foo, i32)) -> bool {
+        true
+    }
+}
+
+fn foo() -> Foo {
+    Bar
+}
+
+fn main() {}