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// run-rustfix
#![warn(clippy::reversed_empty_ranges)]
#![allow(clippy::uninlined_format_args)]
fn main() {
const MAX_LEN: usize = 42;
for i in (0..10).rev() {
println!("{}", i);
}
for i in (0..=10).rev() {
println!("{}", i);
}
for i in (0..MAX_LEN).rev() {
println!("{}", i);
}
for i in 5..=5 {
// not an error, this is the range with only one element “5”
println!("{}", i);
}
for i in 0..10 {
// not an error, the start index is less than the end index
println!("{}", i);
}
for i in -10..0 {
// not an error
println!("{}", i);
}
for i in (0..10).rev().map(|x| x * 2) {
println!("{}", i);
}
// testing that the empty range lint folds constants
for i in (5 + 4..10).rev() {
println!("{}", i);
}
for i in ((3 - 1)..(5 + 2)).rev() {
println!("{}", i);
}
for i in (2 * 2)..(2 * 3) {
// no error, 4..6 is fine
println!("{}", i);
}
let x = 42;
for i in x..10 {
// no error, not constant-foldable
println!("{}", i);
}
}
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