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.
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.
11 #![warn(unused_mut, unused_parens)] // UI tests pass `-A unused`—see Issue #43896
14 #[no_mangle] static SHENZHOU: usize = 1; // should suggest `pub`
15 //~^ WARN static is marked #[no_mangle]
16 #[no_mangle] const DISCOVERY: usize = 1; // should suggest `pub static` rather than `const`
17 //~^ ERROR const items should never be #[no_mangle]
19 #[no_mangle] // should suggest removal (generics can't be no-mangle)
20 pub fn defiant<T>(_t: T) {}
21 //~^ WARN functions generic over types must be mangled
24 fn rio_grande() {} // should suggest `pub`
25 //~^ WARN function is marked
28 // The private-no-mangle lints shouldn't suggest inserting `pub` when the
29 // item is already `pub` (but triggered the lint because, e.g., it's in a
30 // private module). (Issue #47383)
31 #[no_mangle] pub static DAUNTLESS: bool = true;
32 //~^ WARN static is marked
33 #[no_mangle] pub fn val_jean() {}
34 //~^ WARN function is marked
41 #[no_debug] // should suggest removal of deprecated attribute
44 while true { // should suggest `loop`
45 //~^ WARN denote infinite loops
46 let mut a = (1); // should suggest no `mut`, no parens
47 //~^ WARN does not need to be mutable
48 //~| WARN unnecessary parentheses
49 let d = Equinox { warp_factor: 9.975 };
51 Equinox { warp_factor: warp_factor } => {} // should suggest shorthand
52 //~^ WARN this pattern is redundant