rust/src/test/compile-fail/unsafe-modifying-str.rs
Alex Crichton a69e4a55eb Forbid modifications of strings in the compiler
This disallows `str[0] = foo` along with `foo = &mut str[i]` to prevent strings
from being modified at runtime (except possibly through the `str` module)

Closes #8891
2013-10-09 10:34:35 -07:00

19 lines
644 B
Rust

// Copyright 2013 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.
fn main() {
let mut s = ~"test";
s[0] = 3; //~ ERROR: not allowed
s[0] += 3; //~ ERROR: not allowed
{
let _a = &mut s[0]; //~ ERROR: not allowed
}
}