src/test/ui/not-panic/not-panic-safe-3.stderr

   1 error[E0277]: the type `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
   2   --> $DIR/not-panic-safe-3.rs:10:5
   3    |
   4 LL | fn assert<T: UnwindSafe + ?Sized>() {}
   5    |              ---------- required by this bound in `assert`
   6 ...
   7 LL |     assert::<Arc<RefCell<i32>>>();
   8    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `UnsafeCell<i32>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
   9    |
  10    = help: within `RefCell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<i32>`
  11    = note: required because it appears within the type `RefCell<i32>`
  12    = note: required because of the requirements on the impl of `UnwindSafe` for `Arc<RefCell<i32>>`
  13
  14 error[E0277]: the type `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
  15   --> $DIR/not-panic-safe-3.rs:10:5
  16    |
  17 LL | fn assert<T: UnwindSafe + ?Sized>() {}
  18    |              ---------- required by this bound in `assert`
  19 ...
  20 LL |     assert::<Arc<RefCell<i32>>>();
  21    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `UnsafeCell<isize>` may contain interior mutability and a reference may not be safely transferrable across a catch_unwind boundary
  22    |
  23    = help: within `RefCell<i32>`, the trait `RefUnwindSafe` is not implemented for `UnsafeCell<isize>`
  24    = note: required because it appears within the type `Cell<isize>`
  25    = note: required because it appears within the type `RefCell<i32>`
  26    = note: required because of the requirements on the impl of `UnwindSafe` for `Arc<RefCell<i32>>`
  27
  28 error: aborting due to 2 previous errors
  29
  30 For more information about this error, try `rustc --explain E0277`.