46 lines
1.3 KiB
Rust
46 lines
1.3 KiB
Rust
// Copyright 2013 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.
|
|
|
|
|
|
#[repr(u8)]
|
|
enum Eu8 {
|
|
Au8 = 23,
|
|
Bu8 = 223,
|
|
Cu8 = -23, //~ ERROR unary negation of unsigned integer
|
|
}
|
|
|
|
#[repr(u16)]
|
|
enum Eu16 {
|
|
Au16 = 23,
|
|
Bu16 = 55555,
|
|
Cu16 = -22333, //~ ERROR unary negation of unsigned integer
|
|
}
|
|
|
|
#[repr(u32)]
|
|
enum Eu32 {
|
|
Au32 = 23,
|
|
Bu32 = 3_000_000_000,
|
|
Cu32 = -2_000_000_000, //~ ERROR unary negation of unsigned integer
|
|
}
|
|
|
|
#[repr(u64)]
|
|
enum Eu64 {
|
|
Au32 = 23,
|
|
Bu32 = 3_000_000_000,
|
|
Cu32 = -2_000_000_000, //~ ERROR unary negation of unsigned integer
|
|
}
|
|
|
|
// u64 currently allows negative numbers, and i64 allows numbers greater than `1<<63`. This is a
|
|
// little counterintuitive, but since the discriminant can store all the bits, and extracting it
|
|
// with a cast requires specifying the signedness, there is no loss of information in those cases.
|
|
// This also applies to isize and usize on 64-bit targets.
|
|
|
|
pub fn main() { }
|