rust/tests/ui/range.rs
Oliver Schneider 328fea3e0d Rustup
2018-08-07 16:34:17 +02:00

41 lines
754 B
Rust

struct NotARange;
impl NotARange {
fn step_by(&self, _: u32) {}
}
#[warn(iterator_step_by_zero, range_zip_with_len)]
fn main() {
let _ = (0..1).step_by(0);
// No warning for non-zero step
let _ = (0..1).step_by(1);
let _ = (1..).step_by(0);
let _ = (1..=2).step_by(0);
let x = 0..1;
let _ = x.step_by(0);
// No error, not a range.
let y = NotARange;
y.step_by(0);
let v1 = vec![1,2,3];
let v2 = vec![4,5];
let _x = v1.iter().zip(0..v1.len());
let _y = v1.iter().zip(0..v2.len()); // No error
// check const eval
let _ = v1.iter().step_by(2/3);
}
#[allow(unused)]
fn no_panic_with_fake_range_types() {
struct Range {
foo: i32,
}
let _ = Range { foo: 0 };
}