23 lines
483 B
Rust
23 lines
483 B
Rust
//@ check-pass
|
|
//! This test checks that dropck knows that ManuallyDrop does not drop its field.
|
|
#![feature(dropck_eyepatch)]
|
|
|
|
use std::mem::ManuallyDrop;
|
|
|
|
struct S<T>(ManuallyDrop<T>);
|
|
|
|
unsafe impl<#[may_dangle] T> Drop for S<T> {
|
|
fn drop(&mut self) {}
|
|
}
|
|
|
|
struct NonTrivialDrop<'a>(&'a str);
|
|
impl<'a> Drop for NonTrivialDrop<'a> {
|
|
fn drop(&mut self) {}
|
|
}
|
|
|
|
fn main() {
|
|
let s = String::from("string");
|
|
let _t = S(ManuallyDrop::new(NonTrivialDrop(&s)));
|
|
drop(s);
|
|
}
|