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path: root/src/test/ui/issues/issue-21763.rs
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// Regression test for HashMap only impl'ing Send/Sync if its contents do

use std::collections::HashMap;
use std::rc::Rc;

fn foo<T: Send>() {}

fn main() {
    foo::<HashMap<Rc<()>, Rc<()>>>();
    //~^ ERROR `std::rc::Rc<()>` cannot be sent between threads safely
}