1 files changed, 8 insertions, 0 deletions
diff --git a/tests/ui/array-slice-vec/show-boxed-slice.rs b/tests/ui/array-slice-vec/show-boxed-slice.rs
new file mode 100644
index 00000000000..c10f779b1f6
--- /dev/null
+++ b/tests/ui/array-slice-vec/show-boxed-slice.rs
@@ -0,0 +1,8 @@
+// run-pass
+
+#[derive(Debug)]
+struct Foo(#[allow(unused_tuple_struct_fields)] Box<[u8]>);
+
+pub fn main() {
+    println!("{:?}", Foo(Box::new([0, 1, 2])));
+}