rust/src/test/compile-fail/issue-31424.rs
Georg Brandl fef827672d borrowck: do not suggest to change "&mut self" to "&mut mut self"
Matching the snippet string might not be the cleanest, but matching
the AST node instead seems to end in a lot of nested `if let`s...

Fixes #31424.
2016-05-10 14:57:44 +02:00

31 lines
1006 B
Rust

// Copyright 2016 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.
// forbid-output: &mut mut self
struct Struct;
impl Struct {
fn foo(&mut self) {
(&mut self).bar();
//~^ ERROR cannot borrow immutable argument `self` as mutable
// ... and no SUGGESTION that suggests `&mut mut self`
}
// In this case we could keep the suggestion, but to distinguish the
// two cases is pretty hard. It's an obscure case anyway.
fn bar(self: &mut Self) {
(&mut self).bar();
//~^ ERROR cannot borrow immutable argument `self` as mutable
}
}
fn main () {}