Derive for borrowed fields

test_suite/tests/compile-fail/borrow/empty_lifetimes.rs

@@ -0,0 +1,10 @@
+#[macro_use]
+extern crate serde_derive;
+
+#[derive(Deserialize)] //~ ERROR: proc-macro derive panicked
+struct Test<'a> {
+    #[serde(borrow = "")] //~^^ HELP: at least one lifetime must be borrowed
+    s: &'a str,
+}
+
+fn main() {}