From cf94bdc0742c13e2a0cac864c478b8626b266e1b Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:11:38 +0200
Subject: Merging upstream version 1.66.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../multiple-occurrence-ambiguousity.rs            | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs

(limited to 'src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs')

diff --git a/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs b/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs
new file mode 100644
index 000000000..6986ad621
--- /dev/null
+++ b/src/test/ui/traits/trait-upcasting/multiple-occurrence-ambiguousity.rs
@@ -0,0 +1,22 @@
+// check-fail
+#![feature(trait_upcasting)]
+#![allow(incomplete_features)]
+
+trait Bar<T> {
+    fn bar(&self, _: T) {}
+}
+
+trait Foo : Bar<i32> + Bar<u32> {
+    fn foo(&self, _: ()) {}
+}
+
+struct S;
+
+impl Bar<i32> for S {}
+impl Bar<u32> for S {}
+impl Foo for S {}
+
+fn main() {
+    let s: &dyn Foo = &S;
+    let t: &dyn Bar<_> = s; //~ ERROR mismatched types
+}
-- 
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