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// revisions: no_drop_tracking drop_tracking drop_tracking_mir
// [drop_tracking] compile-flags: -Zdrop-tracking
// [drop_tracking_mir] compile-flags: -Zdrop-tracking-mir
// [drop_tracking] check-pass
// [drop_tracking_mir] check-pass
#![feature(negative_impls, generators)]
struct Foo;
impl !Send for Foo {}
fn main() {
assert_send(|| {
//[no_drop_tracking]~^ ERROR generator cannot be sent between threads safely
let guard = Foo;
drop(guard);
yield;
})
}
fn assert_send<T: Send>(_: T) {}
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