From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/traits/object/exclusion.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 tests/ui/traits/object/exclusion.rs

(limited to 'tests/ui/traits/object/exclusion.rs')

diff --git a/tests/ui/traits/object/exclusion.rs b/tests/ui/traits/object/exclusion.rs
new file mode 100644
index 000000000..766dceeaf
--- /dev/null
+++ b/tests/ui/traits/object/exclusion.rs
@@ -0,0 +1,19 @@
+// run-pass
+trait Future: 'static {
+    // The requirement for Self: Sized must prevent instantiation of
+    // Future::forget in vtables, otherwise there's an infinite type
+    // recursion through <Map<...> as Future>::forget.
+    fn forget(self) where Self: Sized {
+        Box::new(Map(self)) as Box<dyn Future>;
+    }
+}
+
+struct Map<A>(#[allow(unused_tuple_struct_fields)] A);
+impl<A: Future> Future for Map<A> {}
+
+pub struct Promise;
+impl Future for Promise {}
+
+fn main() {
+    Promise.forget();
+}
-- 
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