From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:03 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

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

(limited to 'tests/ui/mut/mutable-enum-indirect.rs')

diff --git a/tests/ui/mut/mutable-enum-indirect.rs b/tests/ui/mut/mutable-enum-indirect.rs
new file mode 100644
index 000000000..502859c04
--- /dev/null
+++ b/tests/ui/mut/mutable-enum-indirect.rs
@@ -0,0 +1,19 @@
+// Tests that an `&` pointer to something inherently mutable is itself
+// to be considered mutable.
+
+#![feature(negative_impls)]
+
+use std::marker::Sync;
+
+struct NoSync;
+impl !Sync for NoSync {}
+
+enum Foo { A(NoSync) }
+
+fn bar<T: Sync>(_: T) {}
+
+fn main() {
+    let x = Foo::A(NoSync);
+    bar(&x);
+    //~^ ERROR `NoSync` cannot be shared between threads safely [E0277]
+}
-- 
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