From ba2e09d3fef6603dfc4d47f740f27b8a980e81c4 Mon Sep 17 00:00:00 2001
From: Jake Hughes <jh@jakehughes.uk>
Date: Tue, 21 Nov 2023 14:08:47 +0000
Subject: [PATCH] Add a test

---
 library/alloc/tests/gc.rs  | 12 ++++++++++++
 library/alloc/tests/lib.rs |  1 +
 2 files changed, 13 insertions(+)
 create mode 100644 library/alloc/tests/gc.rs

diff --git a/library/alloc/tests/gc.rs b/library/alloc/tests/gc.rs
new file mode 100644
index 0000000000000..be25f93d38a4a
--- /dev/null
+++ b/library/alloc/tests/gc.rs
@@ -0,0 +1,12 @@
+use std::gc::GcAllocator;
+
+#[repr(align(1024))]
+struct S(u8);
+
+#[test]
+fn large_alignment() {
+    let x = Box::new_in(S(123), GcAllocator);
+    let ptr = Box::into_raw(x);
+    assert!(!ptr.is_null());
+    assert!(ptr.is_aligned());
+}
diff --git a/library/alloc/tests/lib.rs b/library/alloc/tests/lib.rs
index 2529c8384764a..1bc2b7dc08e8f 100644
--- a/library/alloc/tests/lib.rs
+++ b/library/alloc/tests/lib.rs
@@ -56,6 +56,7 @@ mod c_str;
 mod const_fns;
 mod cow_str;
 mod fmt;
+mod gc;
 mod heap;
 mod linked_list;
 mod rc;