1 files changed, 35 insertions, 0 deletions
diff --git a/vendor/derivative/tests/rustc-expr-copy.rs b/vendor/derivative/tests/rustc-expr-copy.rs
new file mode 100644
index 000000000..ab3ae912e
--- /dev/null
+++ b/vendor/derivative/tests/rustc-expr-copy.rs
@@ -0,0 +1,35 @@
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// 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.
+
+#[cfg(feature = "use_core")]
+extern crate core;
+
+#[macro_use]
+extern crate derivative;
+
+
+fn f(arg: &mut A) {
+    arg.a = 100;
+}
+
+#[derive(Derivative)]
+#[derivative(Copy, Clone)]
+struct A { a: isize }
+
+#[test]
+fn main() {
+    let mut x = A {a: 10};
+    f(&mut x);
+    assert_eq!(x.a, 100);
+    x.a = 20;
+    let mut y = x;
+    f(&mut y);
+    assert_eq!(x.a, 20);
+}