File: issue-21763.rs

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rustc 1.85.0%2Bdfsg3-1
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// Regression test for HashMap only impl'ing Send/Sync if its contents do

//@ normalize-stderr: "\S+[\\/]hashbrown\S+" -> "$$HASHBROWN_SRC_LOCATION"

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

fn foo<T: Send>() {}

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