030c666cc1
This way it's much easier to add lints throughout compilation correctly, and functions on impls can alter the way lints are emitted.
30 lines
759 B
Rust
30 lines
759 B
Rust
// Copyright 2012 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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#[deny(dead_assignment)];
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fn f1(x: &mut int) {
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*x = 1; // no error
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}
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fn f2() {
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let mut x = 3; //~ ERROR: value assigned to `x` is never read
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x = 4;
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copy x;
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}
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fn f3() {
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let mut x = 3;
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copy x;
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x = 4; //~ ERROR: value assigned to `x` is never read
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}
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fn main() {}
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