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/traits/trait-upcasting/replace-vptr.rs | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 src/test/ui/traits/trait-upcasting/replace-vptr.rs

(limited to 'src/test/ui/traits/trait-upcasting/replace-vptr.rs')

diff --git a/src/test/ui/traits/trait-upcasting/replace-vptr.rs b/src/test/ui/traits/trait-upcasting/replace-vptr.rs
new file mode 100644
index 000000000..1164e4361
--- /dev/null
+++ b/src/test/ui/traits/trait-upcasting/replace-vptr.rs
@@ -0,0 +1,49 @@
+// run-pass
+
+#![feature(trait_upcasting)]
+#![allow(incomplete_features)]
+
+trait A {
+    fn foo_a(&self);
+}
+
+trait B {
+    fn foo_b(&self);
+}
+
+trait C: A + B {
+    fn foo_c(&self);
+}
+
+struct S(i32);
+
+impl A for S {
+    fn foo_a(&self) {
+        unreachable!();
+    }
+}
+
+impl B for S {
+    fn foo_b(&self) {
+        assert_eq!(42, self.0);
+    }
+}
+
+impl C for S {
+    fn foo_c(&self) {
+        unreachable!();
+    }
+}
+
+fn invoke_inner(b: &dyn B) {
+    b.foo_b();
+}
+
+fn invoke_outer(c: &dyn C) {
+    invoke_inner(c);
+}
+
+fn main() {
+    let s = S(42);
+    invoke_outer(&s);
+}
-- 
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