src/test/compile-fail/const-len-underflow-subspans.rs

   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
  11 // Check that a constant-evaluation underflow highlights the correct
  12 // spot (where the underflow occurred).
  13
  14 const ONE: usize = 1;
  15 const TWO: usize = 2;
  16
  17 fn main() {
  18     let a: [i8; ONE - TWO] = unimplemented!();
  19     //~^ ERROR array length constant evaluation error: attempted to subtract with overflow [E0250]
  20 }