41 lines
1.1 KiB
Rust
41 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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// pretty-expanded FIXME #23616
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#![feature(unboxed_closures)]
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#![deny(unused_mut)]
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// Test that mutating a mutable upvar in a capture-by-value unboxed
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// closure does not ice (issue #18238) and marks the upvar as used
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// mutably so we do not get a spurious warning about it not needing to
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// be declared mutable (issue #18336 and #18769)
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fn set(x: &mut usize) { *x = 42; }
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fn main() {
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{
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let mut x = 0_usize;
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move || x += 1;
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}
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{
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let mut x = 0_usize;
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move || x += 1;
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}
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{
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let mut x = 0_usize;
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move || set(&mut x);
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}
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{
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let mut x = 0_usize;
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move || set(&mut x);
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}
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}
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