mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-23 03:23:33 +00:00
58 lines
1.7 KiB
Rust
58 lines
1.7 KiB
Rust
#![feature(plugin)]
|
|
#![warn(clippy::indexing_slicing)]
|
|
// We also check the out_of_bounds_indexing lint here, because it lints similar things and
|
|
// we want to avoid false positives.
|
|
#![warn(clippy::out_of_bounds_indexing)]
|
|
#![allow(clippy::no_effect, clippy::unnecessary_operation)]
|
|
|
|
fn main() {
|
|
let x = [1, 2, 3, 4];
|
|
let index: usize = 1;
|
|
let index_from: usize = 2;
|
|
let index_to: usize = 3;
|
|
x[index];
|
|
&x[index..];
|
|
&x[..index];
|
|
&x[index_from..index_to];
|
|
&x[index_from..][..index_to]; // Two lint reports, one for [index_from..] and another for [..index_to].
|
|
x[4]; // Ok, let rustc's `const_err` lint handle `usize` indexing on arrays.
|
|
x[1 << 3]; // Ok, let rustc's `const_err` lint handle `usize` indexing on arrays.
|
|
&x[5..][..10]; // Two lint reports, one for out of bounds [5..] and another for slicing [..10].
|
|
&x[0..][..3];
|
|
&x[1..][..5];
|
|
|
|
&x[0..].get(..3); // Ok, should not produce stderr.
|
|
x[0]; // Ok, should not produce stderr.
|
|
x[3]; // Ok, should not produce stderr.
|
|
&x[0..3]; // Ok, should not produce stderr.
|
|
|
|
let y = &x;
|
|
y[0];
|
|
&y[1..2];
|
|
&y[0..=4];
|
|
&y[..=4];
|
|
|
|
&y[..]; // Ok, should not produce stderr.
|
|
|
|
let v = vec![0; 5];
|
|
v[0];
|
|
v[10];
|
|
v[1 << 3];
|
|
&v[10..100];
|
|
&x[10..][..100]; // Two lint reports, one for [10..] and another for [..100].
|
|
&v[10..];
|
|
&v[..100];
|
|
|
|
&v[..]; // Ok, should not produce stderr.
|
|
|
|
//
|
|
// Continue tests at end function to minimize the changes to this file's corresponding stderr.
|
|
//
|
|
|
|
const N: usize = 15; // Out of bounds
|
|
const M: usize = 3; // In bounds
|
|
x[N]; // Ok, let rustc's `const_err` lint handle `usize` indexing on arrays.
|
|
x[M]; // Ok, should not produce stderr.
|
|
v[N];
|
|
v[M];
|
|
}
|