tests/ui/abi/foreign/foreign-call-no-runtime.rs

//@ run-pass
//@ needs-threads

#![feature(rustc_private)]

extern crate libc;

use std::mem;
use std::thread;

#[link(name = "rust_test_helpers", kind = "static")]
extern "C" {
    fn rust_dbg_call(cb: extern "C" fn(libc::uintptr_t), data: libc::uintptr_t) -> libc::uintptr_t;
}

pub fn main() {
    unsafe {
        thread::spawn(move || {
            let i: isize = 100;
            rust_dbg_call(callback_isize, mem::transmute(&i));
        })
        .join()
        .unwrap();

        thread::spawn(move || {
            let i: i32 = 100;
            rust_dbg_call(callback_i32, mem::transmute(&i));
        })
        .join()
        .unwrap();

        thread::spawn(move || {
            let i: i64 = 100;
            rust_dbg_call(callback_i64, mem::transmute(&i));
        })
        .join()
        .unwrap();
    }
}

extern "C" fn callback_isize(data: libc::uintptr_t) {
    unsafe {
        let data = data as *const isize;
        assert_eq!(*data, 100);
    }
}

extern "C" fn callback_i64(data: libc::uintptr_t) {
    unsafe {
        let data = data as *const i64;
        assert_eq!(*data, 100);
    }
}

extern "C" fn callback_i32(data: libc::uintptr_t) {
    unsafe {
        let data = data as *const i32;
        assert_eq!(*data, 100);
    }
}