From 3b003233fd8439d36e5b8a1d72f3f3871d5d14c9 Mon Sep 17 00:00:00 2001
From: Mark Simulacrum <mark.simulacrum@gmail.com>
Date: Sat, 29 Apr 2017 08:04:00 -0600
Subject: [PATCH] Add test for issue #16994.

---
 src/test/compile-fail/issue-16994.rs | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/test/compile-fail/issue-16994.rs

diff --git a/src/test/compile-fail/issue-16994.rs b/src/test/compile-fail/issue-16994.rs
new file mode 100644
index 00000000000..ae4e8ce1df8
--- /dev/null
+++ b/src/test/compile-fail/issue-16994.rs
@@ -0,0 +1,20 @@
+// Copyright 2017 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.
+
+#![feature(rustc_attrs)]
+
+fn cb<'a,T>(_x: Box<Fn((&'a i32, &'a (Vec<&'static i32>, bool))) -> T>) -> T {
+    panic!()
+}
+
+#[rustc_error]
+fn main() { //~ ERROR compilation successful
+    cb(Box::new(|(k, &(ref v, b))| (*k, v.clone(), b)));
+}