1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/no_share-enum.rs b/tests/ui/no_share-enum.rs
new file mode 100644
index 00000000000..44bf1913e7a
--- /dev/null
+++ b/tests/ui/no_share-enum.rs
@@ -0,0 +1,16 @@
+#![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]
+}