[recent build]

Consider this source code:
------------
package flowtest;

import java.util.concurrent.atomic.AtomicBoolean;

public class Flowtest {

    public void i() {
        if (!i.getAndSet(true)) {
            System.err.println("");
        }
    }
    
    private final AtomicBoolean i = new AtomicBoolean();
    
}
------------

The 'System.err.println("");' is marked as a dead branch, although it apparently is not.