1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
|
// check-pass
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() {}
|
