rust/tests/compile-fail/range.rs
2015-12-12 21:39:10 -08:00

30 lines
783 B
Rust

#![feature(step_by)]
#![feature(plugin)]
#![plugin(clippy)]
struct NotARange;
impl NotARange {
fn step_by(&self, _: u32) {}
}
#[deny(range_step_by_zero, range_zip_with_len)]
fn main() {
(0..1).step_by(0); //~ERROR Range::step_by(0) produces an infinite iterator
// No warning for non-zero step
(0..1).step_by(1);
(1..).step_by(0); //~ERROR Range::step_by(0) produces an infinite iterator
let x = 0..1;
x.step_by(0); //~ERROR Range::step_by(0) produces an infinite iterator
// 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()); //~ERROR It is more idiomatic to use v1.iter().enumerate()
let _y = v1.iter().zip(0..v2.len()); // No error
}