40 lines
1.4 KiB
Rust
40 lines
1.4 KiB
Rust
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// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// revisions: lxl nll g2p
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//[lxl]compile-flags: -Z borrowck=mir -Z two-phase-borrows
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//[nll]compile-flags: -Z borrowck=mir -Z two-phase-borrows -Z nll
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//[g2p]compile-flags: -Z borrowck=mir -Z two-phase-borrows -Z nll -Z two-phase-beyond-autoref
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#![feature(rustc_attrs)]
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// This is a test checking that when we limit two-phase borrows to
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// method receivers, we do not let other kinds of auto-ref to leak
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// through.
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//
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// The g2p revision illustrates the "undesirable" behavior you would
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// otherwise observe without limiting the phasing to autoref on method
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// receivers (namely, that the test would pass).
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fn bar(x: &mut u32) {
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foo(x, *x);
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//[lxl]~^ ERROR cannot use `*x` because it was mutably borrowed [E0503]
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//[nll]~^^ ERROR cannot use `*x` because it was mutably borrowed [E0503]
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}
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fn foo(x: &mut u32, y: u32) {
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*x += y;
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}
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#[rustc_error]
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fn main() { //[g2p]~ ERROR compilation successful
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bar(&mut 5);
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}
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