31 lines
877 B
Rust
31 lines
877 B
Rust
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// Copyright 2015 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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#[derive(Copy, Clone)]
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struct S;
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impl S {
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fn mutate(&mut self) {
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}
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}
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fn func(arg: S) {
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//~^ HELP use `mut` as shown
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//~| SUGGESTION fn func(mut arg: S) {
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arg.mutate(); //~ ERROR cannot borrow immutable argument
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}
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fn main() {
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let local = S;
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//~^ HELP use `mut` as shown
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//~| SUGGESTION let mut local = S;
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local.mutate(); //~ ERROR cannot borrow immutable local variable
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}
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