2 // aux-build:macro_rules.rs
4 #![warn(clippy::manual_rem_euclid)]
7 extern crate macro_rules;
9 macro_rules! internal_rem_euclid {
12 let _: i32 = value.rem_euclid(4);
19 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 = 1 + value.rem_euclid(4);
25 let _: i32 = (3 + value % 4) % 4;
26 let _: i32 = (-4 + value % -4) % -4;
27 let _: i32 = ((5 % 4) + 4) % 4;
29 // Make sure the lint does not trigger if it would cause an error, like with an ambiguous
31 let not_annotated = 24;
32 let _ = ((not_annotated % 4) + 4) % 4;
34 let _ = ((inferred % 4) + 4) % 4;
36 // For lint to apply the constant must always be on the RHS of the previous value for %
37 let _: i32 = 4 % ((value % 4) + 4);
38 let _: i32 = ((4 % value) + 4) % 4;
40 // Lint in internal macros
41 internal_rem_euclid!();
43 // Do not lint in external macros
47 // Should lint for params too
48 pub fn rem_euclid_4(num: i32) -> i32 {
52 // Constant version came later, should still lint
53 pub const fn const_rem_euclid_4(num: i32) -> i32 {
57 #[clippy::msrv = "1.37"]
60 let _: i32 = ((x % 4) + 4) % 4;
63 #[clippy::msrv = "1.38"]
66 let _: i32 = x.rem_euclid(4);
70 #[clippy::msrv = "1.51"]
71 pub const fn msrv_1_51() {
73 let _: i32 = ((x % 4) + 4) % 4;
76 #[clippy::msrv = "1.52"]
77 pub const fn msrv_1_52() {
79 let _: i32 = x.rem_euclid(4);