| #![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]; |
| } |