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1 | // Copyright 2017 The Rust Project Developers. See the COPYRIGHT | |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
11 | // compile-flags: --error-format pretty-json -Zunstable-options | |
12 | ||
13 | // The output for humans should just highlight the whole span without showing | |
14 | // the suggested replacement, but we also want to test that suggested | |
15 | // replacement only removes one set of parentheses, rather than naïvely | |
16 | // stripping away any starting or ending parenthesis characters—hence this | |
17 | // test of the JSON error format. | |
18 | ||
19 | #![warn(unused_parens)] | |
20 | ||
21 | fn main() { | |
22 | // We want to suggest the properly-balanced expression `1 / (2 + 3)`, not | |
23 | // the malformed `1 / (2 + 3` | |
24 | let _a = (1 / (2 + 3)); | |
25 | } |