rust/src/test/compile-fail/lint-unnecessary-parens.rs
Huon Wilson 3901228811 rustc: add lint for parens in if, while, match and return.
The parens in `if (true) {}` are not not necessary, so we'll warn about
them.
2014-01-21 21:58:48 +11:00

26 lines
874 B
Rust

// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#[deny(unnecessary_parens)];
fn foo() -> int {
return (1); //~ ERROR unnecessary parentheses around `return` value
}
fn main() {
foo();
if (true) {} //~ ERROR unnecessary parentheses around `if` condition
while (true) {} //~ ERROR unnecessary parentheses around `while` condition
match (true) { //~ ERROR unnecessary parentheses around `match` head expression
_ => {}
}
}