73 lines
1.4 KiB
Rust
73 lines
1.4 KiB
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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fn f1(x: int) {
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//~^ WARNING unused variable: `x`
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}
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fn f1b(x: &mut int) {
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//~^ WARNING unused variable: `x`
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}
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fn f2() {
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let x = 3;
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//~^ WARNING unused variable: `x`
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}
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fn f3() {
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let mut x = 3;
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//~^ WARNING variable `x` is assigned to, but never used
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x += 4;
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//~^ WARNING value assigned to `x` is never read
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}
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fn f3b() {
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let mut z = 3;
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//~^ WARNING variable `z` is assigned to, but never used
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loop {
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z += 4;
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}
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}
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fn f4() {
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match Some(3) {
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Some(i) => {
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//~^ WARNING unused variable: `i`
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}
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None => {}
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}
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}
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enum tri {
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a(int), b(int), c(int)
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}
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fn f4b() -> int {
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match a(3) {
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a(i) | b(i) | c(i) => {
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i
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}
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}
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}
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// leave this in here just to trigger compile-fail:
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struct r {
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x: (),
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}
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impl Drop for r {
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fn finalize(&self) {}
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}
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fn main() {
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let x = r { x: () };
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fn@(move x) { copy x; }; //~ ERROR copying a value of non-copyable type
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}
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