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// run-pass
// revisions: classic next
//[next] compile-flags: -Ztrait-solver=next
trait Foo: Fn(i32) -> i32 + Send {}
impl<T: ?Sized + Fn(i32) -> i32 + Send> Foo for T {}
fn wants_foo(f: Box<dyn Foo>) -> i32 {
f(42)
}
fn main() {
let f = Box::new(|x| x);
assert_eq!(wants_foo(f), 42);
}
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