389ef6601d
attempt to preserve crate concatenation, this is a backwards compatible change. Conflicts: src/librustc/middle/traits/select.rs
47 lines
1.1 KiB
Rust
47 lines
1.1 KiB
Rust
// Copyright 2014 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.
|
|
|
|
// Test that we can infer the Target based on the Self or vice versa.
|
|
|
|
use std::mem;
|
|
|
|
trait Convert<Target> {
|
|
fn convert(&self) -> Target;
|
|
}
|
|
|
|
impl Convert<u32> for i16 {
|
|
fn convert(&self) -> u32 {
|
|
*self as u32
|
|
}
|
|
}
|
|
|
|
impl Convert<i16> for u32 {
|
|
fn convert(&self) -> i16 {
|
|
*self as i16
|
|
}
|
|
}
|
|
|
|
fn test<T,U>(_: T, _: U, t_size: uint, u_size: uint)
|
|
where T : Convert<U>
|
|
{
|
|
assert_eq!(mem::size_of::<T>(), t_size);
|
|
assert_eq!(mem::size_of::<U>(), u_size);
|
|
}
|
|
|
|
fn main() {
|
|
// T = i16, U = u32
|
|
test(22_i16, 44, 2, 4);
|
|
test(22, 44_u32, 2, 4);
|
|
|
|
// T = u32, U = i16
|
|
test(22_u32, 44, 4, 2);
|
|
test(22, 44_i16, 4, 2);
|
|
}
|