rust/src/test/run-pass/extern-pass-TwoU64s-ref.rs
Brian Anderson a5ddc00982 rustc: Use an out pointer to return structs in x86 C ABI. #5347
This Adds a bunch of tests for passing and returning structs
of various sizes to C. It fixes the struct return rules on unix,
and on windows for structs of size > 8 bytes. Struct passing
on unix for structs under a certain size appears to still be broken.
2013-04-17 15:49:19 -07:00

30 lines
833 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 that we ignore modes when calling extern functions.
#[deriving(Eq)]
struct TwoU64s {
one: u64, two: u64
}
pub extern {
pub fn rust_dbg_extern_identity_TwoU64s(&&u: TwoU64s) -> TwoU64s;
}
pub fn main() {
unsafe {
let x = TwoU64s {one: 22, two: 23};
let y = rust_dbg_extern_identity_TwoU64s(x);
assert!(x == y);
}
}