| // check-pass |
| |
| #![feature(const_forget)] |
| |
| use std::mem::forget; |
| |
| const _: () = forget(0i32); |
| const _: () = forget(Vec::<Vec<Box<i32>>>::new()); |
| |
| // Writing this function signature without const-forget |
| // triggers compiler errors: |
| // 1) That we use a non-const fn inside a const fn |
| // 2) without the forget, it complains about the destructor of Box |
| // |
| // FIXME: this method cannot be called in const-eval yet, as Box isn't |
| // const constructable |
| #[allow(unused)] |
| const fn const_forget_box<T: ?Sized>(b: Box<T>) { |
| forget(b); |
| } |
| |
| fn main() {} |
