| // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // error-pattern:index out of bounds |
| |
| use std::mem; |
| |
| fn main() { |
| |
| // This should cause a bounds-check panic, but may not if we do our |
| // bounds checking by comparing the scaled index to the vector's |
| // address-bounds, since we've scaled the index to wrap around to the |
| // address of the 0th cell in the array (even though the index is |
| // huge). |
| |
| let x = vec![1_usize, 2_usize, 3_usize]; |
| |
| let base = x.as_ptr() as usize; |
| let idx = base / mem::size_of::<usize>(); |
| println!("ov1 base = 0x{:x}", base); |
| println!("ov1 idx = 0x{:x}", idx); |
| println!("ov1 sizeof::<usize>() = 0x{:x}", mem::size_of::<usize>()); |
| println!("ov1 idx * sizeof::<usize>() = 0x{:x}", |
| idx * mem::size_of::<usize>()); |
| |
| // This should panic. |
| println!("ov1 0x{:x}", x[idx]); |
| } |