From 5c7400c12d462af2fe7507c24d88c837d35df9dd Mon Sep 17 00:00:00 2001
From: Santiago Pastorino <spastorino@gmail.com>
Date: Fri, 27 Aug 2021 17:48:51 -0300
Subject: [PATCH] Add nested TAIT inference test

---
 .../nested-tait-inference.rs                   | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 src/test/ui/type-alias-impl-trait/nested-tait-inference.rs

diff --git a/src/test/ui/type-alias-impl-trait/nested-tait-inference.rs b/src/test/ui/type-alias-impl-trait/nested-tait-inference.rs
new file mode 100644
index 000000000000..efb88dabf34c
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/nested-tait-inference.rs
@@ -0,0 +1,18 @@
+// check-pass
+
+#![feature(type_alias_impl_trait)]
+#![allow(dead_code)]
+
+use std::fmt::Debug;
+
+type FooX = impl Debug;
+
+trait Foo<A> { }
+
+impl Foo<()> for () { }
+
+fn foo() -> impl Foo<FooX> {
+    ()
+}
+
+fn main() { }