30 lines
1.1 KiB
Rust
30 lines
1.1 KiB
Rust
// Copyright 2014 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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// Test that even unboxed closures that are capable of mutating their
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// environment cannot mutate captured variables that have not been
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// declared mutable (#18335)
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fn set(x: &mut usize) { *x = 0; }
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fn main() {
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let x = 0;
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move || x = 1; //~ ERROR cannot assign
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move || set(&mut x); //~ ERROR cannot borrow
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move || x = 1; //~ ERROR cannot assign
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move || set(&mut x); //~ ERROR cannot borrow
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|| x = 1; //~ ERROR cannot assign
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// FIXME: this should be `cannot borrow` (issue #18330)
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|| set(&mut x); //~ ERROR cannot assign
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|| x = 1; //~ ERROR cannot assign
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// FIXME: this should be `cannot borrow` (issue #18330)
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|| set(&mut x); //~ ERROR cannot assign
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}
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