rust/src/test/compile-fail/borrowck/borrowck-let-suggestion-suffixes.rs
2016-05-12 16:48:59 -07:00

61 lines
2.2 KiB
Rust

// Copyright 2015 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.
fn f() {
let old = ['o']; // statement 0
let mut v1 = Vec::new(); // statement 1
let mut v2 = Vec::new(); // statement 2
//~^ NOTE reference must be valid for the block suffix following statement 2
let young = ['y']; // statement 3
//~^ NOTE ...but borrowed value is only valid for the block suffix following statement 3
v2.push(&young[0]); // statement 4
//~^ ERROR `young[..]` does not live long enough
let mut v3 = Vec::new(); // statement 5
//~^ NOTE reference must be valid for the block suffix following statement 5
v3.push(&'x'); // statement 6
//~^ ERROR borrowed value does not live long enough
//~| does not live long enough
//~| NOTE ...but borrowed value is only valid for the statement
//~| HELP consider using a `let` binding to increase its lifetime
{
let mut v4 = Vec::new(); // (sub) statement 0
//~^ NOTE reference must be valid for the block suffix following statement 0
v4.push(&'y');
//~^ ERROR borrowed value does not live long enough
//~| does not live long enough
//~| NOTE ...but borrowed value is only valid for the statement
//~| HELP consider using a `let` binding to increase its lifetime
} // (statement 7)
let mut v5 = Vec::new(); // statement 8
//~^ NOTE reference must be valid for the block suffix following statement 8
v5.push(&'z');
//~^ ERROR borrowed value does not live long enough
//~| does not live long enough
//~| NOTE ...but borrowed value is only valid for the statement
//~| HELP consider using a `let` binding to increase its lifetime
v1.push(&old[0]);
}
fn main() {
f();
}