rust/tests/ui/consts/const-blocks/fn-call-in-non-const.rs

// Some type that is not copyable.
struct Bar;

const fn no_copy() -> Option<Bar> {
    None
}

const fn copy() -> u32 {
    3
}

fn main() {
    let _: [u32; 2] = [copy(); 2];
    let _: [Option<Bar>; 2] = [no_copy(); 2];
    //~^ ERROR the trait bound `Bar: Copy` is not satisfied
}