1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/compile-fail/variance-use-covariant-struct-1.rs b/src/test/compile-fail/variance-use-covariant-struct-1.rs
new file mode 100644
index 00000000000..2631cfc05e8
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+++ b/src/test/compile-fail/variance-use-covariant-struct-1.rs
@@ -0,0 +1,23 @@
+// Copyright 2015 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.
+
+// Test that a covariant struct does not permit the lifetime of a
+// reference to be enlarged.
+
+struct SomeStruct<T>(T);
+
+fn foo<'min,'max>(v: SomeStruct<&'min ()>)
+                  -> SomeStruct<&'max ()>
+    where 'max : 'min
+{
+    v //~ ERROR mismatched types
+}
+
+fn main() { }