rust/src/test/run-pass/extern-pass-TwoU16s.rs
klutzy 7437995b3e rustc: Fix x86 ffi for struct arguments
This fixes struct passing abi on x86 ffi: Structs are now passed
indirectly with byval attribute (as clang does).
2014-03-19 16:41:50 +09:00

31 lines
877 B
Rust

// Copyright 2012-2014 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 a foreign function that accepts and returns a struct
// by value.
#[deriving(Eq, Show)]
struct TwoU16s {
one: u16, two: u16
}
#[link(name = "rustrt")]
extern {
pub fn rust_dbg_extern_identity_TwoU16s(v: TwoU16s) -> TwoU16s;
}
pub fn main() {
unsafe {
let x = TwoU16s {one: 22, two: 23};
let y = rust_dbg_extern_identity_TwoU16s(x);
assert_eq!(x, y);
}
}