3dcd215740
This breaks code that referred to variant names in the same namespace as
their enum. Reexport the variants in the old location or alter code to
refer to the new locations:
```
pub enum Foo {
A,
B
}
fn main() {
let a = A;
}
```
=>
```
pub use self::Foo::{A, B};
pub enum Foo {
A,
B
}
fn main() {
let a = A;
}
```
or
```
pub enum Foo {
A,
B
}
fn main() {
let a = Foo::A;
}
```
[breaking-change]
39 lines
1.3 KiB
Rust
39 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.
|
|
|
|
/*!
|
|
* C-like enums have to be represented as LLVM ints, not wrapped in a
|
|
* struct, because it's important for the FFI that they interoperate
|
|
* with C integers/enums, and the ABI can treat structs differently.
|
|
* For example, on i686-linux-gnu, a struct return value is passed by
|
|
* storing to a hidden out parameter, whereas an integer would be
|
|
* returned in a register.
|
|
*
|
|
* This test just checks that the ABIs for the enum and the plain
|
|
* integer are compatible, rather than actually calling C code.
|
|
* The unused parameter to `foo` is to increase the likelihood of
|
|
* crashing if something goes wrong here.
|
|
*/
|
|
|
|
#[repr(u32)]
|
|
enum Foo {
|
|
A = 0,
|
|
B = 23
|
|
}
|
|
|
|
#[inline(never)]
|
|
extern "C" fn foo(_x: uint) -> Foo { Foo::B }
|
|
|
|
pub fn main() {
|
|
unsafe {
|
|
let f: extern "C" fn(uint) -> u32 = ::std::mem::transmute(foo);
|
|
assert_eq!(f(0xDEADBEEF), Foo::B as u32);
|
|
}
|
|
}
|