5 const NONE_CELL_STRING: Option<Cell<String>> = None;
7 struct Foo<T>(#[allow(unused_tuple_struct_fields)] T);
9 const FOO: Option<Box<T>> = None;
13 let _: &'static u32 = &42;
14 let _: &'static Option<u32> = &None;
16 // We should be able to peek at consts and see they're None.
17 let _: &'static Option<Cell<String>> = &NONE_CELL_STRING;
18 let _: &'static Option<Box<()>> = &Foo::FOO;