| // 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. |
| |
| // Evaluation of constants in refutable patterns goes through |
| // different compiler control-flow paths. |
| |
| #![allow(unused_imports)] |
| |
| use std::fmt; |
| use std::{i8, i16, i32, i64, isize}; |
| use std::{u8, u16, u32, u64, usize}; |
| |
| const NEG_128: i8 = -128; |
| const NEG_NEG_128: i8 = -NEG_128; |
| //~^ ERROR constant evaluation error |
| //~| attempted to negate with overflow |
| //~| ERROR constant evaluation error |
| //~| attempted to negate with overflow |
| //~| ERROR constant evaluation error |
| //~| attempted to negate with overflow |
| |
| fn main() { |
| match -128i8 { |
| NEG_NEG_128 => println!("A"), //~ NOTE for pattern here |
| _ => println!("B"), |
| } |
| } |