tests/ui/not-panic/not-panic-safe.rs

   1 #![allow(dead_code)]
   2
   3 use std::panic::UnwindSafe;
   4
   5 fn assert<T: UnwindSafe + ?Sized>() {}
   6
   7 fn main() {
   8     assert::<&mut &mut &i32>();
   9     //~^ ERROR the type `&mut &mut &i32` may not be safely transferred across an unwind boundary
  10 }