1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/issue-55872-3.rs b/src/test/ui/impl-trait/issue-55872-3.rs
new file mode 100644
index 000000000..3ffce85e6
--- /dev/null
+++ b/src/test/ui/impl-trait/issue-55872-3.rs
@@ -0,0 +1,20 @@
+// edition:2018
+// ignore-compare-mode-chalk
+
+#![feature(type_alias_impl_trait)]
+
+pub trait Bar {
+    type E: Copy;
+
+    fn foo<T>() -> Self::E;
+}
+
+impl<S> Bar for S {
+    type E = impl std::marker::Copy;
+    fn foo<T>() -> Self::E {
+    //~^ ERROR the trait bound `impl Future<Output = ()>: Copy` is not satisfied [E0277]
+        async {}
+    }
+}
+
+fn main() {}