rust/src/test/run-fail/overflowing-sub.rs

// Copyright 2015 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:thread '<main>' panicked at 'arithmetic operation overflowed'
// compile-flags: -C debug-assertions

// (Work around constant-evaluation)
fn value() -> u8 { 42 }

fn main() {
    let _x = value() - (value() + 1);
}