1 files changed, 61 insertions, 0 deletions
diff --git a/tests/ui-fulldeps/empty-struct-braces-derive.rs b/tests/ui-fulldeps/empty-struct-braces-derive.rs
new file mode 100644
index 000000000..10e8beaa7
--- /dev/null
+++ b/tests/ui-fulldeps/empty-struct-braces-derive.rs
@@ -0,0 +1,61 @@
+// run-pass
+// `#[derive(Trait)]` works for empty structs/variants with braces or parens.
+
+#![feature(rustc_private)]
+
+extern crate rustc_macros;
+extern crate rustc_serialize;
+
+// Necessary to pull in object code as the rest of the rustc crates are shipped only as rmeta
+// files.
+#[allow(unused_extern_crates)]
+extern crate rustc_driver;
+
+use rustc_macros::{Decodable, Encodable};
+
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default, Debug, Encodable, Decodable)]
+struct S {}
+
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default, Debug, Encodable, Decodable)]
+struct Z();
+
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Encodable, Decodable)]
+enum E {
+    V {},
+    U,
+    W(),
+}
+
+fn main() {
+    let s = S {};
+    let s1 = s;
+    let s2 = s.clone();
+    assert_eq!(s, s1);
+    assert_eq!(s, s2);
+    assert!(!(s < s1));
+    assert_eq!(format!("{:?}", s), "S");
+
+    let z = Z();
+    let z1 = z;
+    let z2 = z.clone();
+    assert_eq!(z, z1);
+    assert_eq!(z, z2);
+    assert!(!(z < z1));
+    assert_eq!(format!("{:?}", z), "Z");
+
+    let e = E::V {};
+    let e1 = e;
+    let e2 = e.clone();
+    assert_eq!(e, e1);
+    assert_eq!(e, e2);
+    assert!(!(e < e1));
+    assert_eq!(format!("{:?}", e), "V");
+
+    let e = E::W();
+    let e1 = e;
+    let e2 = e.clone();
+    assert_eq!(e, e1);
+    assert_eq!(e, e2);
+    assert!(!(e < e1));
+    assert_eq!(format!("{:?}", e), "W");
+}