rust/src/test/compile-fail/mut-suggestion.rs
Ariel Ben-Yehuda 50728e5245 borrowck: consolidate mut suggestions
This converts all of borrowck's `mut` suggestions to a new
`mc::ImmutabilityBlame` API instead of the current mix of various hacks.

Fixes #35937.
Fixes #40823.
2017-03-27 01:37:42 +03:00

33 lines
894 B
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.
#[derive(Copy, Clone)]
struct S;
impl S {
fn mutate(&mut self) {
}
}
fn func(arg: S) {
//~^ consider changing this to `mut arg`
arg.mutate();
//~^ ERROR cannot borrow immutable argument
//~| cannot borrow mutably
}
fn main() {
let local = S;
//~^ consider changing this to `mut local`
local.mutate();
//~^ ERROR cannot borrow immutable local variable
//~| cannot borrow mutably
}