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https://github.com/rust-lang/rust-clippy
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19 lines
668 B
Rust
19 lines
668 B
Rust
#![warn(clippy::reversed_empty_ranges)]
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const ANSWER: i32 = 42;
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const SOME_NUM: usize = 3;
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fn main() {
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let arr = [1, 2, 3, 4, 5];
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let _ = &arr[3usize..=1usize];
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//~^ ERROR: this range is reversed and using it to index a slice will panic at run-tim
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//~| NOTE: `-D clippy::reversed-empty-ranges` implied by `-D warnings`
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let _ = &arr[SOME_NUM..1];
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//~^ ERROR: this range is reversed and using it to index a slice will panic at run-tim
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for _ in ANSWER..ANSWER {}
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//~^ ERROR: this range is empty so it will yield no values
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// Should not be linted, see issue #5689
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let _ = (42 + 10..42 + 10).map(|x| x / 2).find(|&x| x == 21);
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}
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