src/test/run-pass/extern-pass-empty.rs

   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
  11 // Test a foreign function that accepts empty struct.
  12
  13 // pretty-expanded FIXME #23616
  14 // ignore-msvc
  15 // ignore-emscripten
  16
  17 struct TwoU8s {
  18     one: u8,
  19     two: u8,
  20 }
  21
  22 struct ManyInts {
  23     arg1: i8,
  24     arg2: i16,
  25     arg3: i32,
  26     arg4: i16,
  27     arg5: i8,
  28     arg6: TwoU8s,
  29 }
  30
  31 struct Empty;
  32
  33 #[link(name = "rust_test_helpers")]
  34 extern {
  35     fn rust_dbg_extern_empty_struct(v1: ManyInts, e: Empty, v2: ManyInts);
  36 }
  37
  38 pub fn main() {
  39     unsafe {
  40         let x = ManyInts {
  41             arg1: 2,
  42             arg2: 3,
  43             arg3: 4,
  44             arg4: 5,
  45             arg5: 6,
  46             arg6: TwoU8s { one: 7, two: 8, }
  47         };
  48         let y = ManyInts {
  49             arg1: 1,
  50             arg2: 2,
  51             arg3: 3,
  52             arg4: 4,
  53             arg5: 5,
  54             arg6: TwoU8s { one: 6, two: 7, }
  55         };
  56         let empty = Empty;
  57         rust_dbg_extern_empty_struct(x, empty, y);
  58     }
  59 }