1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/future.rs b/src/test/ui/type-alias-impl-trait/future.rs
new file mode 100644
index 000000000..56323216e
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/future.rs
@@ -0,0 +1,22 @@
+#![feature(type_alias_impl_trait)]
+
+// edition:2021
+// compile-flags: --crate-type=lib
+
+use std::future::Future;
+
+trait Bar {
+    fn bar(&self);
+}
+
+type FooFuture<B> = impl Future<Output = ()>;
+
+fn foo<B: Bar>(bar: B) -> FooFuture<B> {
+    async move { bar.bar() }
+    //~^ ERROR: the trait bound `B: Bar` is not satisfied
+}
+
+pub fn mainish(ctx: &mut std::task::Context) {
+    let boom: FooFuture<u32> = unsafe { core::mem::zeroed() };
+    Box::pin(boom).as_mut().poll(ctx);
+}