31 lines
971 B
Rust
31 lines
971 B
Rust
// 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 attempted to negate with overflow
|
|
|
|
fn main() {
|
|
match -128i8 {
|
|
NEG_NEG_128 => println!("A"),
|
|
_ => println!("B"),
|
|
}
|
|
}
|