#fixed code
                                public N remove(final long key) {
        final int index = myStorage.index(key);
        final N oldValue = index >= 0 ? myStorage.getInternally(index) : null;
        myStorage.remove(key, index);
        return oldValue;
    }
#vulnerable code 
                                public N remove(final long key) {
        final N tmpOldVal = myStorage.get(key);
        myStorage.set(key, 0.0);
        return tmpOldVal;
    } 
                            #location 3 
                            #vulnerability type THREAD_SAFETY_VIOLATION