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// run-pass
use std::cell::Cell;
const NONE_CELL_STRING: Option<Cell<String>> = None;
struct Foo<T>(#[allow(unused_tuple_struct_fields)] T);
impl<T> Foo<T> {
const FOO: Option<Box<T>> = None;
}
fn main() {
let _: &'static u32 = &42;
let _: &'static Option<u32> = &None;
// We should be able to peek at consts and see they're None.
let _: &'static Option<Cell<String>> = &NONE_CELL_STRING;
let _: &'static Option<Box<()>> = &Foo::FOO;
}
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