How can weakCompareAndSet fail spuriously if it is implemented exactly like compareAndSet?

Question

(note that this question is not about CAS, it\'s about the \"May fail spuriously\" Javadoc).

The only difference in the Javadoc between these two methods fr

Answer 1

Just to play a bit, if your question were

How can weakDoIt fail spuriously if it is implemented exactly like doIt?

here is the answer!

public void doIt() {
    a();
}

/**
 * May fail spuriously
 */
public void weakDoIt() {
    a();
}

void a(){
    if(Thread.currentThread().getStackTrace()[2].toString().contains("weakDoIt"))
        System.out.println("I will fail spuriously!");
    else System.out.println("I won't fail spuriously!");
}