1 files changed, 7 insertions, 0 deletions
diff --git a/src/test/ui/interior-mutability/interior-mutability.rs b/src/test/ui/interior-mutability/interior-mutability.rs
new file mode 100644
index 000000000..c704acc22
--- /dev/null
+++ b/src/test/ui/interior-mutability/interior-mutability.rs
@@ -0,0 +1,7 @@
+use std::cell::Cell;
+use std::panic::catch_unwind;
+fn main() {
+    let mut x = Cell::new(22);
+    catch_unwind(|| { x.set(23); });
+    //~^ ERROR the type `UnsafeCell<i32>` may contain interior mutability and a
+}