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.
13 #![warn(unused_mut, unused_parens)] // UI tests pass `-A unused`—see Issue #43896
16 #[no_mangle] const DISCOVERY: usize = 1;
17 //~^ ERROR const items should never be #[no_mangle]
18 //~| HELP try a static value
21 //~^ HELP remove this attribute
22 pub fn defiant<T>(_t: T) {}
23 //~^ WARN functions generic over types must be mangled
29 // The private-no-mangle lints shouldn't suggest inserting `pub` when the
30 // item is already `pub` (but triggered the lint because, e.g., it's in a
31 // private module). (Issue #47383)
32 #[no_mangle] pub const DAUNTLESS: bool = true;
33 //~^ ERROR const items should never be #[no_mangle]
34 //~| HELP try a static value
35 #[no_mangle] pub fn val_jean<T>() {}
36 //~^ WARN functions generic over types must be mangled
37 //~| HELP remove this attribute
39 // ... but we can suggest just-`pub` instead of restricted
40 #[no_mangle] pub(crate) const VETAR: bool = true;
41 //~^ ERROR const items should never be #[no_mangle]
42 //~| HELP try a static value
43 #[no_mangle] pub(crate) fn crossfield<T>() {}
44 //~^ WARN functions generic over types must be mangled
45 //~| HELP remove this attribute
52 #[no_debug] // should suggest removal of deprecated attribute
54 //~| HELP remove this attribute
57 //~^ WARN denote infinite loops
60 //~^ WARN does not need to be mutable
61 //~| HELP remove this `mut`
62 //~| WARN unnecessary parentheses
63 //~| HELP remove these parentheses
64 // the line after `mut` has a `\t` at the beginning, this is on purpose
67 //~^^ WARN does not need to be mutable
68 //~| HELP remove this `mut`
69 let d = Equinox { warp_factor: 9.975 };
71 Equinox { warp_factor: warp_factor } => {}
72 //~^ WARN this pattern is redundant
75 println!("{} {}", a, b);