mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-24 21:53:23 +00:00
71 lines
2.3 KiB
Rust
71 lines
2.3 KiB
Rust
//@no-rustfix
|
|
|
|
#![deny(clippy::iter_out_of_bounds)]
|
|
#![allow(clippy::useless_vec)]
|
|
|
|
fn opaque_empty_iter() -> impl Iterator<Item = ()> {
|
|
std::iter::empty()
|
|
}
|
|
|
|
fn main() {
|
|
#[allow(clippy::never_loop)]
|
|
for _ in [1, 2, 3].iter().skip(4) {
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
unreachable!();
|
|
}
|
|
for (i, _) in [1, 2, 3].iter().take(4).enumerate() {
|
|
//~^ ERROR: this `.take()` call takes more items than the iterator will produce
|
|
assert!(i <= 2);
|
|
}
|
|
|
|
#[allow(clippy::needless_borrow)]
|
|
for _ in (&&&&&&[1, 2, 3]).iter().take(4) {}
|
|
//~^ ERROR: this `.take()` call takes more items than the iterator will produce
|
|
|
|
for _ in [1, 2, 3].iter().skip(4) {}
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
|
|
for _ in [1; 3].iter().skip(4) {}
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
|
|
// Should not lint
|
|
for _ in opaque_empty_iter().skip(1) {}
|
|
|
|
for _ in vec![1, 2, 3].iter().skip(4) {}
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
|
|
for _ in vec![1; 3].iter().skip(4) {}
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
|
|
let x = [1, 2, 3];
|
|
for _ in x.iter().skip(4) {}
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
|
|
let n = 4;
|
|
for _ in x.iter().skip(n) {}
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
|
|
let empty = std::iter::empty::<i8>;
|
|
|
|
for _ in empty().skip(1) {}
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
|
|
for _ in empty().take(1) {}
|
|
//~^ ERROR: this `.take()` call takes more items than the iterator will produce
|
|
|
|
for _ in std::iter::once(1).skip(2) {}
|
|
//~^ ERROR: this `.skip()` call skips more items than the iterator will produce
|
|
|
|
for _ in std::iter::once(1).take(2) {}
|
|
//~^ ERROR: this `.take()` call takes more items than the iterator will produce
|
|
|
|
for x in [].iter().take(1) {
|
|
//~^ ERROR: this `.take()` call takes more items than the iterator will produce
|
|
let _: &i32 = x;
|
|
}
|
|
|
|
// ok, not out of bounds
|
|
for _ in [1].iter().take(1) {}
|
|
for _ in [1, 2, 3].iter().take(2) {}
|
|
for _ in [1, 2, 3].iter().skip(2) {}
|
|
}
|