cd89fdbbc9
by strengthening the tests (by adding no-op references to the closures doing the borrows after the conflicting borrows, thus forcing the lifetimes to resemble lexical scopes even under NLL).
22 lines
699 B
Rust
22 lines
699 B
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 an unboxed closure that mutates a free variable will
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// cause borrow conflicts.
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fn main() {
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let mut x = 0;
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let f = || x += 1;
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let _y = x; //~ ERROR cannot use `x` because it was mutably borrowed
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f;
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}
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