105 lines
1.9 KiB
Rust
105 lines
1.9 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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#![deny(unused_variable)]
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#![deny(dead_assignment)]
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#![allow(dead_code, non_camel_case_types)]
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fn f1(x: int) {
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//~^ ERROR unused variable: `x`
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}
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fn f1b(x: &mut int) {
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//~^ ERROR unused variable: `x`
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}
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#[allow(unused_variable)]
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fn f1c(x: int) {}
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fn f1d() {
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let x: int;
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//~^ ERROR unused variable: `x`
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}
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fn f2() {
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let x = 3i;
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//~^ ERROR unused variable: `x`
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}
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fn f3() {
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let mut x = 3i;
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//~^ ERROR variable `x` is assigned to, but never used
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x += 4i;
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//~^ ERROR value assigned to `x` is never read
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}
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fn f3b() {
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let mut z = 3i;
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//~^ ERROR variable `z` is assigned to, but never used
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loop {
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z += 4i;
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}
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}
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#[allow(unused_variable)]
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fn f3c() {
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let mut z = 3i;
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loop { z += 4i; }
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}
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#[allow(unused_variable)]
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#[allow(dead_assignment)]
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fn f3d() {
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let mut x = 3i;
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x += 4i;
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}
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fn f4() {
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match Some(3i) {
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Some(i) => {
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//~^ ERROR 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(3i) {
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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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fn f5a() {
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for x in range(1i, 10) { }
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//~^ ERROR unused variable: `x`
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}
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fn f5b() {
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for (x, _) in [1i, 2, 3].iter().enumerate() { }
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//~^ ERROR unused variable: `x`
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}
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fn f5c() {
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for (_, x) in [1i, 2, 3].iter().enumerate() {
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//~^ ERROR unused variable: `x`
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continue;
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std::os::set_exit_status(*x); //~ WARNING unreachable statement
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}
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}
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fn main() {
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}
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