src/test/ui/generator/not-send-sync.rs

   1 #![feature(generators)]
   2
   3 use std::cell::Cell;
   4
   5 fn main() {
   6     fn assert_sync<T: Sync>(_: T) {}
   7     fn assert_send<T: Send>(_: T) {}
   8
   9     assert_sync(|| {
  10         //~^ ERROR: generator cannot be shared between threads safely
  11         let a = Cell::new(2);
  12         yield;
  13     });
  14
  15     let a = Cell::new(2);
  16     assert_send(|| {
  17         //~^ ERROR: E0277
  18         drop(&a);
  19         yield;
  20     });
  21 }