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[rustc.git] / src / test / compile-fail / const-len-underflow-separate-spans.rs
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1// Copyright 2012-2013 The Rust Project Developers. See the COPYRIGHT
2// file at the top-level directory of this distribution and at
3// http://rust-lang.org/COPYRIGHT.
4//
5// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8// option. This file may not be copied, modified, or distributed
9// except according to those terms.
10
b039eaaf 11// Check that a constant-evaluation underflow highlights the correct
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12// spot (where the underflow occurred), while also providing the
13// overall context for what caused the evaluation.
14
15const ONE: usize = 1;
16const TWO: usize = 2;
17const LEN: usize = ONE - TWO;
54a0048b 18//~^ ERROR array length constant evaluation error: attempted to subtract with overflow [E0250]
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19
20fn main() {
21 let a: [i8; LEN] = unimplemented!();
22 //~^ NOTE for array length here
23}