From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/type-alias-impl-trait/issue-53598.rs | 27 ++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 src/test/ui/type-alias-impl-trait/issue-53598.rs

(limited to 'src/test/ui/type-alias-impl-trait/issue-53598.rs')

diff --git a/src/test/ui/type-alias-impl-trait/issue-53598.rs b/src/test/ui/type-alias-impl-trait/issue-53598.rs
new file mode 100644
index 000000000..9c1cbf926
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/issue-53598.rs
@@ -0,0 +1,27 @@
+#![feature(type_alias_impl_trait)]
+
+use std::fmt::Debug;
+
+pub trait Foo {
+    type Item: Debug;
+
+    fn foo<T: Debug>(_: T) -> Self::Item;
+}
+
+#[derive(Debug)]
+pub struct S<T>(std::marker::PhantomData<T>);
+
+pub struct S2;
+
+impl Foo for S2 {
+    type Item = impl Debug;
+
+    fn foo<T: Debug>(_: T) -> Self::Item {
+        S::<T>(Default::default())
+        //~^ Error type parameter `T` is part of concrete type but not used in parameter list for the `impl Trait` type alias
+    }
+}
+
+fn main() {
+    S2::foo(123);
+}
-- 
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