test borrowing untagged enum

test_suite/tests/run-pass/untagged-and-borrow.rs

@@ -0,0 +1,25 @@
+// Copyright 2017 Serde Developers
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[macro_use]
+extern crate serde_derive;
+
+#[derive(Deserialize)]
+#[serde(untagged)]
+enum RelData<'a> {
+    Single(#[serde(borrow)] RelObject<'a>),
+    Many(#[serde(borrow)] Vec<RelObject<'a>>),
+}
+
+#[derive(Deserialize)]
+struct RelObject<'a> {
+    ty: &'a str,
+    id: String,
+}
+
+fn main() {}