2 // aux-build:macro_rules.rs
4 #![feature(custom_inner_attributes)]
5 #![warn(clippy::manual_rem_euclid)]
8 extern crate macro_rules;
10 macro_rules! internal_rem_euclid {
13 let _: i32 = value.rem_euclid(4);
20 let _: i32 = value.rem_euclid(4);
21 let _: i32 = value.rem_euclid(4);
22 let _: i32 = value.rem_euclid(4);
23 let _: i32 = value.rem_euclid(4);
24 let _: i32 = 1 + value.rem_euclid(4);
26 let _: i32 = (3 + value % 4) % 4;
27 let _: i32 = (-4 + value % -4) % -4;
28 let _: i32 = ((5 % 4) + 4) % 4;
30 // Make sure the lint does not trigger if it would cause an error, like with an ambiguous
32 let not_annotated = 24;
33 let _ = ((not_annotated % 4) + 4) % 4;
35 let _ = ((inferred % 4) + 4) % 4;
37 // For lint to apply the constant must always be on the RHS of the previous value for %
38 let _: i32 = 4 % ((value % 4) + 4);
39 let _: i32 = ((4 % value) + 4) % 4;
41 // Lint in internal macros
42 internal_rem_euclid!();
44 // Do not lint in external macros
48 // Should lint for params too
49 pub fn rem_euclid_4(num: i32) -> i32 {
53 // Constant version came later, should still lint
54 pub const fn const_rem_euclid_4(num: i32) -> i32 {
59 #![clippy::msrv = "1.37"]
62 let _: i32 = ((x % 4) + 4) % 4;
66 #![clippy::msrv = "1.38"]
69 let _: i32 = x.rem_euclid(4);
73 pub const fn msrv_1_51() {
74 #![clippy::msrv = "1.51"]
77 let _: i32 = ((x % 4) + 4) % 4;
80 pub const fn msrv_1_52() {
81 #![clippy::msrv = "1.52"]
84 let _: i32 = x.rem_euclid(4);