33 lines
1.0 KiB
Rust
33 lines
1.0 KiB
Rust
|
// Copyright 2012-2016 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.
|
||
|
|
|
||
|
|
// Basic test for liveness constraints: the region (`R1`) that appears
|
||
|
|
// in the type of `p` includes the points after `&v[0]` up to (but not
|
||
|
|
// including) the call to `use_x`. The `else` branch is not included.
|
||
|
|
|
||
|
|
// compile-flags:-Zborrowck-mir -Znll
|
||
|
|
|
||
|
|
#![allow(warnings)]
|
||
|
|
#![feature(rustc_attrs)]
|
||
|
|
|
||
|
|
struct MyStruct {
|
||
|
|
field: String
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let mut my_struct = MyStruct { field: format!("Hello") };
|
||
|
|
|
||
|
|
let value = &my_struct.field;
|
||
|
|
if value.is_empty() {
|
||
|
|
my_struct.field.push_str("Hello, world!");
|
||
|
|
//~^ ERROR cannot borrow (Ast)
|
||
|
|
}
|
||
|
|
}
|