rust/tests/ui/array-slice-vec/bounds-check-no-overflow.rs

//@ run-fail
//@ error-pattern:index out of bounds
//@ needs-subprocess

use std::mem::size_of;

fn main() {
    let xs = [1, 2, 3];
    xs[usize::MAX / size_of::<isize>() + 1];
}
Move tests from `test/run-fail` to UI 2020-04-16 06:50:32 +00:00			`//@ run-fail`
core: Use primitive indexing in slice's Index/IndexMut [T]'s Index implementation is normally not used for indexing, instead the compiler supplied indexing is used. Use the compiler supplied version in Index/IndexMut. This removes an inconsistency: Compiler supplied bound check failures look like this: thread 'main' panicked at 'index out of bounds: the len is 3 but the index is 4' If you convince Rust to use the Index impl for slices, bounds check failure looks like this instead: thread 'main' panicked at 'assertion failed: index < self.len()' The latter is used if you for example use Index generically:: use std::ops::Index; fn foo<T: ?Sized>(x: &T) where T: Index<usize> { &x[4]; } foo(&[1, 2, 3][..]) 2016-09-13 18:51:39 +00:00			`//@ error-pattern:index out of bounds`
tests: use `needs-subprocess` instead of `ignore-{wasm32,emscripten,sgx}` 2025-01-23 08:36:54 +00:00			`//@ needs-subprocess`
fix overflow on bounds checks Closes #9020 2013-10-15 03:25:33 +00:00
std: Move size/align functions to std::mem. #2240 2013-10-17 01:34:01 +00:00			`use std::mem::size_of;`
fix overflow on bounds checks Closes #9020 2013-10-15 03:25:33 +00:00
			`fn main() {`
Remove all `i` suffixes 2015-01-25 21:05:03 +00:00			`let xs = [1, 2, 3];`
Remove int/uint from libstd/lib.rs 2015-02-27 00:43:55 +00:00			`xs[usize::MAX / size_of::<isize>() + 1];`
fix overflow on bounds checks Closes #9020 2013-10-15 03:25:33 +00:00			`}`