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Auto merge of #52975 - pnkfelix:issue-52967-edition-2018-implies-2-phase-borrows, r=Mark-Simulacrum

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NLL migration in the 2018 edition needs two-phase borrows too!

NLL migration in the 2018 edition needs two-phase borrows too!

Fix #52967.
This commit is contained in:
bors 2018-08-02 12:40:35 +00:00
commit 5e92bf280b
2 changed files with 43 additions and 3 deletions
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src/test/ui/borrowck/issue-52967-edition-2018-needs-two-phase-borrows.rs Normal file
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// Copyright 2018 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.
// This is a regression test for #52967, where we discovered that in
// the initial deployment of NLL for the 2018 edition, I forgot to
// turn on two-phase-borrows in addition to `-Z borrowck=migrate`.
// revisions: ast zflags edition
//[zflags]compile-flags: -Z borrowck=migrate -Z two-phase-borrows
//[edition]compile-flags: --edition 2018
// run-pass
fn the_bug() {
let mut stuff = ("left", "right");
match stuff {
(ref mut left, _) if *left == "left" => { *left = "new left"; }
_ => {}
}
assert_eq!(stuff, ("new left", "right"));
}
fn main() {
the_bug();
}