27 lines
830 B
Rust
27 lines
830 B
Rust
// Copyright 2018 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.
|
|
|
|
#![feature(core_intrinsics)]
|
|
|
|
#[repr(i8)]
|
|
pub enum Enum {
|
|
VariantA,
|
|
VariantB,
|
|
}
|
|
|
|
fn make_b() -> Enum { Enum::VariantB }
|
|
|
|
fn main() {
|
|
assert_eq!(1, make_b() as i8);
|
|
assert_eq!(1, make_b() as u8);
|
|
assert_eq!(1, make_b() as i32);
|
|
assert_eq!(1, make_b() as u32);
|
|
assert_eq!(1, unsafe { std::intrinsics::discriminant_value(&make_b()) });
|
|
}
|