New upstream version 1.49.0~beta.4+dfsg1

[rustc.git] / library / core / tests / cell.rs

diff --git a/library/core/tests/cell.rs b/library/core/tests/cell.rs
index 40be01f443931df7b3ad4ff312de170be12e65b1..77517879dd2507f20df999d24caf294e5599042d 100644 (file)
--- a/library/core/tests/cell.rs
+++ b/library/core/tests/cell.rs
@@ -422,3 +422,15 @@ fn refcell_format() {
     let msg = format!("{name} {}", &*what.borrow(), name = &*name.borrow());
     assert_eq!(msg, "rust rocks".to_string());
 }
+
+#[allow(dead_code)]
+fn const_cells() {
+    const UNSAFE_CELL: UnsafeCell<i32> = UnsafeCell::new(3);
+    const _: i32 = UNSAFE_CELL.into_inner();
+
+    const REF_CELL: RefCell<i32> = RefCell::new(3);
+    const _: i32 = REF_CELL.into_inner();
+
+    const CELL: Cell<i32> = Cell::new(3);
+    const _: i32 = CELL.into_inner();
+}