// xfail-stage0
// xfail-stage1
// xfail-stage2

/**
   A test case for issue #577, which also exposes #588
*/

use std;
import std::task::join;

fn child() {}

fn main() {
    // tasks
    auto t1; auto t2;

    t1 = spawn child();
    t2 = spawn child();

    assert(t1 == t1);
    assert(t1 != t2);

    // ports
    auto p1; auto p2;

    p1 = port[int]();
    p2 = port[int]();

    assert(p1 == p1);
    assert(p1 != p2);

    // channels
    auto c1; auto c2;

    c1 = chan(p1);
    c2 = chan(p2);

    assert(c1 == c1);
    assert(c1 != c2);

    join(t1);
    join(t2);
}