ByteBufferHashCodeBug.java

    ByteBuffer buffer = ByteBuffer.allocate(testData.length);
    ByteBuffer tmp = buffer;
    LinkedHashMap<ByteBuffer, MutableInt> map = new LinkedHashMap<ByteBuffer, MutableInt>();
    map.put(tmp, new MutableInt());
    tmp.put(testData); // Right after this operation hashCode changes but the buffer is equal
    assertTrue(buffer.equals(tmp));
    assertNull(map.get(buffer));