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// xfail-fast
#[legacy_modes];
extern mod std;
fn start(c: pipes::Chan<pipes::Chan<~str>>) {
let (ch, p) = pipes::stream();
c.send(ch);
let mut a;
let mut b;
a = p.recv();
assert a == ~"A";
log(error, a);
b = p.recv();
assert b == ~"B";
log(error, b);
}
fn main() {
let (ch, p) = pipes::stream();
let child = task::spawn(|| start(ch) );
let c = p.recv();
c.send(~"A");
c.send(~"B");
task::yield();
}
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