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1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
abe05a73 | 11 | // ignore-wasm32-bare no libc to test ffi with |
c34b1796 AL |
12 | |
13 | #[derive(Copy, Clone)] | |
1a4d82fc JJ |
14 | pub struct S { |
15 | x: u64, | |
16 | y: u64, | |
17 | z: u64, | |
18 | } | |
19 | ||
476ff2be | 20 | #[link(name = "rust_test_helpers", kind = "static")] |
1a4d82fc JJ |
21 | extern { |
22 | pub fn get_x(x: S) -> u64; | |
23 | pub fn get_y(x: S) -> u64; | |
24 | pub fn get_z(x: S) -> u64; | |
25 | } | |
26 | ||
27 | #[inline(never)] | |
28 | fn indirect_call(func: unsafe extern fn(s: S) -> u64, s: S) -> u64 { | |
29 | unsafe { | |
30 | func(s) | |
31 | } | |
32 | } | |
33 | ||
34 | fn main() { | |
35 | let s = S { x: 1, y: 2, z: 3 }; | |
36 | assert_eq!(s.x, indirect_call(get_x, s)); | |
37 | assert_eq!(s.y, indirect_call(get_y, s)); | |
38 | assert_eq!(s.z, indirect_call(get_z, s)); | |
39 | } |