rust/src/test/run-pass/extern-pass-TwoU32s.rs
2015-04-01 11:22:39 -04:00

31 lines
906 B
Rust

// Copyright 2012 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 a foreign function that accepts and returns a struct
// by value.
#[derive(Copy, Clone, PartialEq, Debug)]
pub struct TwoU32s {
one: u32, two: u32
}
#[link(name = "rust_test_helpers")]
extern {
pub fn rust_dbg_extern_identity_TwoU32s(v: TwoU32s) -> TwoU32s;
}
pub fn main() {
unsafe {
let x = TwoU32s {one: 22, two: 23};
let y = rust_dbg_extern_identity_TwoU32s(x);
assert_eq!(x, y);
}
}