1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/unsized/unsized-tuple-impls.rs b/src/test/ui/unsized/unsized-tuple-impls.rs
new file mode 100644
index 000000000..5e385f33b
--- /dev/null
+++ b/src/test/ui/unsized/unsized-tuple-impls.rs
@@ -0,0 +1,21 @@
+// run-pass
+
+#![feature(unsized_tuple_coercion)]
+
+use std::collections::HashSet;
+
+fn main() {
+    let x : &(i32, i32, [i32]) = &(0, 1, [2, 3]);
+    let y : &(i32, i32, [i32]) = &(0, 1, [2, 3, 4]);
+    let mut a = [y, x];
+    a.sort();
+    assert_eq!(a, [x, y]);
+
+    assert_eq!(&format!("{:?}", a), "[(0, 1, [2, 3]), (0, 1, [2, 3, 4])]");
+
+    let mut h = HashSet::new();
+    h.insert(x);
+    h.insert(y);
+    assert!(h.contains(x));
+    assert!(h.contains(y));
+}