From 975e72fc0f122e2c2b57d8d61a9c6553d29fb366 Mon Sep 17 00:00:00 2001
From: Daniel Henry-Mantilla <daniel.henry.mantilla@gmail.com>
Date: Fri, 26 Aug 2022 15:00:38 +0200
Subject: [PATCH] Add corresponding regression test

---
 src/test/ui/deriving/deriving-default-enum.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/test/ui/deriving/deriving-default-enum.rs b/src/test/ui/deriving/deriving-default-enum.rs
index d1a81c72c2fdc..1c7a501edc705 100644
--- a/src/test/ui/deriving/deriving-default-enum.rs
+++ b/src/test/ui/deriving/deriving-default-enum.rs
@@ -12,6 +12,16 @@ enum Foo {
     Beta(NotDefault),
 }
 
+// #[default] on a generic enum does not add `Default` bounds to the type params.
+#[derive(Default)]
+enum MyOption<T> {
+    #[default]
+    None,
+    #[allow(dead_code)]
+    Some(T),
+}
+
 fn main() {
     assert_eq!(Foo::default(), Foo::Alpha);
+    assert!(matches!(MyOption::<NotDefault>::default(), MyOption::None));
 }