1 use std::cell::{Cell, RefCell}; 2 use std::rc::{Rc, Weak}; 3 use std::sync::mpsc::{Receiver, Sender}; 4 test<T: Sync>()5fn test<T: Sync>() {} 6 main()7fn main() { 8 test::<Cell<i32>>(); 9 //~^ ERROR `Cell<i32>` cannot be shared between threads safely [E0277] 10 test::<RefCell<i32>>(); 11 //~^ ERROR `RefCell<i32>` cannot be shared between threads safely [E0277] 12 13 test::<Rc<i32>>(); 14 //~^ ERROR `Rc<i32>` cannot be shared between threads safely [E0277] 15 test::<Weak<i32>>(); 16 //~^ ERROR `std::rc::Weak<i32>` cannot be shared between threads safely [E0277] 17 18 test::<Receiver<i32>>(); 19 //~^ ERROR `std::sync::mpsc::Receiver<i32>` cannot be shared between threads safely [E0277] 20 test::<Sender<i32>>(); 21 //~^ ERROR `Sender<i32>` cannot be shared between threads safely [E0277] 22 } 23