adding compile-fail test

src/test/compile-fail/E0495.rs

@@ -0,0 +1,23 @@
+// Copyright 2016 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.
+
+// FIXME - This test gives different results on different machines.
+fn invoke<'a, F>(x: &'a i32, f: F) -> &'a i32
+where F: FnOnce(&'a i32, &i32) -> &'a i32
+{
+    let y = 22;
+    f(x, &y)
+}
+
+fn foo<'a>(x: &'a i32) { //~ ERROR E0495
+    invoke(&x, |a, b| if a > b { a } else { b });
+}
+
+fn main() {}