2 files changed, 30 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
+}
diff --git a/src/test/ui/interior-mutability/interior-mutability.stderr b/src/test/ui/interior-mutability/interior-mutability.stderr
new file mode 100644
index 000000000..349fb6daf
--- /dev/null
+++ b/src/test/ui/interior-mutability/interior-mutability.stderr
@@ -0,0 +1,23 @@
+error[E0277]: the type `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+  --> $DIR/interior-mutability.rs:5:5
+   |
+LL |     catch_unwind(|| { x.set(23); });
+   |     ^^^^^^^^^^^^ `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
+   |
+   = help: within `Cell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<i32>`
+   = note: required because it appears within the type `Cell<i32>`
+   = note: required because of the requirements on the impl of `UnwindSafe` for `&Cell<i32>`
+note: required because it's used within this closure
+  --> $DIR/interior-mutability.rs:5:18
+   |
+LL |     catch_unwind(|| { x.set(23); });
+   |                  ^^
+note: required by a bound in `catch_unwind`
+  --> $SRC_DIR/std/src/panic.rs:LL:COL
+   |
+LL | pub fn catch_unwind<F: FnOnce() -> R + UnwindSafe, R>(f: F) -> Result<R> {
+   |                                        ^^^^^^^^^^ required by this bound in `catch_unwind`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.