1 files changed, 50 insertions, 0 deletions
diff --git a/src/test/ui/run-pass/traits/trait-impl.rs b/src/test/ui/run-pass/traits/trait-impl.rs
new file mode 100644
index 00000000000..e940f6c2126
--- /dev/null
+++ b/src/test/ui/run-pass/traits/trait-impl.rs
@@ -0,0 +1,50 @@
+// Copyright 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.
+
+// Test calling methods on an impl for a bare trait.
+
+// aux-build:traitimpl.rs
+
+extern crate traitimpl;
+use traitimpl::Bar;
+
+static mut COUNT: usize = 1;
+
+trait T {
+    fn t(&self) {}
+}
+
+impl<'a> T+'a {
+    fn foo(&self) {
+        unsafe { COUNT *= 2; }
+    }
+    fn bar() {
+        unsafe { COUNT *= 3; }
+    }
+}
+
+impl T for isize {}
+
+struct Foo;
+impl<'a> Bar<'a> for Foo {}
+
+fn main() {
+    let x: &T = &42;
+
+    x.foo();
+    T::foo(x);
+    T::bar();
+
+    unsafe { assert_eq!(COUNT, 12); }
+
+    // Cross-crait case
+    let x: &Bar = &Foo;
+    x.bar();
+}