summary refs log tree commit diff
path: root/src/test/ui/nll/maybe-initialized-drop-with-uninitialized-fragments.rs
blob: cd46014a7f5ca45dfbd2c1ee533f41c9c43ac9ef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//compile-flags: -Z emit-end-regions -Zborrowck=mir

#![allow(warnings)]

struct Wrap<'p> { p: &'p mut i32 }

impl<'p> Drop for Wrap<'p> {
    fn drop(&mut self) {
        *self.p += 1;
    }
}

struct Foo<'p> { a: String, b: Wrap<'p> }

fn main() {
    let mut x = 0;
    let wrap = Wrap { p: &mut x };
    let s = String::from("str");
    let foo = Foo { a: s, b: wrap };
    std::mem::drop(foo.a);
    std::mem::drop(foo.b);
    x = 1; //~ ERROR cannot assign to `x` because it is borrowed [E0506]
    // FIXME ^ This currently errors and it should not.
}