// 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() {} |