1 files changed, 24 insertions, 0 deletions
diff --git a/tests/ui/unsafe/ranged_ints3_const.rs b/tests/ui/unsafe/ranged_ints3_const.rs
new file mode 100644
index 00000000000..637198d3604
--- /dev/null
+++ b/tests/ui/unsafe/ranged_ints3_const.rs
@@ -0,0 +1,24 @@
+// revisions: mirunsafeck thirunsafeck
+// [thirunsafeck]compile-flags: -Z thir-unsafeck
+
+#![feature(rustc_attrs)]
+
+use std::cell::Cell;
+
+#[rustc_layout_scalar_valid_range_start(1)]
+#[repr(transparent)]
+pub(crate) struct NonZero<T>(pub(crate) T);
+fn main() {}
+
+const fn foo() -> NonZero<Cell<u32>> {
+    let mut x = unsafe { NonZero(Cell::new(1)) };
+    let y = &x.0; //~ ERROR the borrowed element may contain interior mutability
+    //~^ ERROR borrow of layout constrained field with interior mutability
+    unsafe { NonZero(Cell::new(1)) }
+}
+
+const fn bar() -> NonZero<Cell<u32>> {
+    let mut x = unsafe { NonZero(Cell::new(1)) };
+    let y = unsafe { &x.0 }; //~ ERROR the borrowed element may contain interior mutability
+    unsafe { NonZero(Cell::new(1)) }
+}