#vulnerable code 
                                @Test
    public void testWrite3read3SingleThreadedWrite() throws Exception {

        try (DirectStore allocate = DirectStore.allocate(40 * 3)) {
            final BytesQueue bytesRingBuffer = new BytesQueue(allocate.bytes());
            for (int i = 0; i < 100; i++) {
                bytesRingBuffer.offer(output.clear());
                bytesRingBuffer.offer(output.clear());
                bytesRingBuffer.offer(output.clear());
                assertEquals(EXPECTED, bytesRingBuffer.poll(input.clear()).readUTF());
                assertEquals(EXPECTED, bytesRingBuffer.poll(input.clear()).readUTF());
                assertEquals(EXPECTED, bytesRingBuffer.poll(input.clear()).readUTF());
            }
        }
    } 
                            #location 10 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Test
    public void testWrite3read3SingleThreadedWrite() throws Exception {

        try (DirectStore allocate = DirectStore.allocate(40 * 3)) {
            final BytesRingBuffer bytesRingBuffer = new BytesRingBuffer(allocate.bytes());
            for (int i = 0; i < 100; i++) {
                bytesRingBuffer.offer(output.clear());
                bytesRingBuffer.offer(output.clear());
                bytesRingBuffer.offer(output.clear());
                assertEquals(EXPECTED, bytesRingBuffer.take(maxSize -> input.clear()).readUTF());
                assertEquals(EXPECTED, bytesRingBuffer.take(maxSize -> input.clear()).readUTF());
                assertEquals(EXPECTED, bytesRingBuffer.take(maxSize -> input.clear()).readUTF());
            }
        }
    }