1 files changed, 38 insertions, 0 deletions
diff --git a/src/test/run-pass/binding/func-arg-ref-pattern.rs b/src/test/run-pass/binding/func-arg-ref-pattern.rs
new file mode 100644
index 00000000000..7e87f14e2c5
--- /dev/null
+++ b/src/test/run-pass/binding/func-arg-ref-pattern.rs
@@ -0,0 +1,38 @@
+// 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.
+
+// run-pass
+// exec-env:RUST_POISON_ON_FREE=1
+
+// Test argument patterns where we create refs to the inside of
+// boxes. Make sure that we don't free the box as we match the
+// pattern.
+
+#![feature(box_patterns)]
+#![feature(box_syntax)]
+
+fn getaddr(box ref x: Box<usize>) -> *const usize {
+    let addr: *const usize = &*x;
+    addr
+}
+
+fn checkval(box ref x: Box<usize>) -> usize {
+    *x
+}
+
+pub fn main() {
+    let obj: Box<_> = box 1;
+    let objptr: *const usize = &*obj;
+    let xptr = getaddr(obj);
+    assert_eq!(objptr, xptr);
+
+    let obj = box 22;
+    assert_eq!(checkval(obj), 22);
+}