1 files changed, 20 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-6557.rs b/src/test/ui/issues/issue-6557.rs
new file mode 100644
index 00000000000..ddec8b3f934
--- /dev/null
+++ b/src/test/ui/issues/issue-6557.rs
@@ -0,0 +1,20 @@
+// Copyright 2013 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.
+
+// compile-pass
+#![allow(dead_code)]
+// pretty-expanded FIXME #23616
+
+#![feature(box_patterns)]
+#![feature(box_syntax)]
+
+fn foo(box (_x, _y): Box<(isize, isize)>) {}
+
+pub fn main() {}