| // 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. |
| |
| // needed because negating int::MIN will behave differently between |
| // optimized compilation and unoptimized compilation and thus would |
| // lead to different lints being emitted |
| // compile-flags: -O |
| |
| #![feature(rustc_attrs)] |
| #![allow(exceeding_bitshifts)] |
| #![deny(const_err)] |
| |
| fn black_box<T>(_: T) { |
| unimplemented!() |
| } |
| |
| fn main() { |
| let a = -std::i8::MIN; |
| //~^ ERROR const_err |
| let b = 200u8 + 200u8 + 200u8; |
| //~^ ERROR const_err |
| let c = 200u8 * 4; |
| //~^ ERROR const_err |
| let d = 42u8 - (42u8 + 1); |
| //~^ ERROR const_err |
| let _e = [5u8][1]; |
| //~^ ERROR const_err |
| black_box(a); |
| black_box(b); |
| black_box(c); |
| black_box(d); |
| } |
