// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. struct NotARange; impl NotARange { fn step_by(&self, _: u32) {} } #[warn(clippy::iterator_step_by_zero, clippy::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 }; }