0x10040000, 0x10041040, 0x00041000, 0x10041000, 0x00041040, 0x00001000, 0x00000040, 0x10040000, 0x10000040, 0x10001000,
            0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000, 0x00001040, 0x00000000, 0x00000000, 0x10040040, 0x10000040,

	FMOVS	F1, 0x1003000(R2)	// FMOVS	F1, 16789504(R2)
	FMOVS	F1, 0x44332211(R2)	// FMOVS	F1, 1144201745(R2)
	FMOVD	F1, 0x1007000(R2)	// FMOVD	F1, 16805888(R2)
	FMOVD	F1, 0x44332211(R2)	// FMOVD	F1, 1144201745(R2)
	FMOVQ	F1, 0x1003000(R2)	// FMOVQ	F1, 16789504(R2)
	FMOVQ	F1, 0x44332211(R2)	// FMOVQ	F1, 1144201745(R2)

	MOVB	0x1000000(R1), R2	// MOVB		16777216(R1), R2
	MOVB	0x44332211(R1), R2	// MOVB		1144201745(R1), R2

     */
    int[][] DOS_ERROR_CODES =
            { { 0x00000000, 0x00000000 }, { 0x00010001, 0xc0000002 }, { 0x00010002, 0xc0000002 }, { 0x00020001, 0xc000000f },
                    { 0x00020002, 0xc000006a }, { 0x00030001, 0xc000003a }, { 0x00030002, 0xc00000cb }, { 0x00040002, 0xc00000ca },
                    { 0x00050001, 0xc0000022 }, { 0x00050002, 0xc000000d }, { 0x00060001, 0xc0000008 }, { 0x00060002, 0xc00000cc },

     */
    int[][] DOS_ERROR_CODES = { { 0x00000000, 0x00000000 }, { 0x00010001, 0xc0000002 }, { 0x00010002, 0xc0000002 },
            { 0x00020001, 0xc000000f }, { 0x00020002, 0xc000006a }, { 0x00030001, 0xc000003a }, { 0x00030002, 0xc00000cb },
            { 0x00040002, 0xc00000ca }, { 0x00050001, 0xc0000022 }, { 0x00050002, 0xc000000d }, { 0x00060001, 0xc0000008 },

                "DCERPC_FAULT_NDR should be in standard range");

        // Extended fault codes (0x1C000000 range)
        assertTrue((DcerpcError.DCERPC_FAULT_INVALID_TAG & 0xFF000000) == 0x1C000000, "DCERPC_FAULT_INVALID_TAG should be in 0x1C range");
        assertTrue((DcerpcError.DCERPC_FAULT_CONTEXT_MISMATCH & 0xFF000000) == 0x1C000000,
                "DCERPC_FAULT_CONTEXT_MISMATCH should be in 0x1C range");

    assertEquals(0x000000, (int) webSafeColorArray[0]);
    assertEquals(0x000033, (int) webSafeColorArray[1]);
    assertEquals(0x000066, (int) webSafeColorArray[2]);
    assertEquals(0x003300, (int) webSafeColorArray[6]);
    assertEquals(0x330000, (int) webSafeColorArray[36]);
    assertEquals(0x000066, (int) webSafeColors.get(2));
    assertEquals(0x003300, (int) webSafeColors.get(6));

    Integer[] webSafeColorArray = webSafeColors.toArray(new Integer[webSafeColors.size()]);
    assertEquals(0x000000, (int) webSafeColorArray[0]);
    assertEquals(0x000033, (int) webSafeColorArray[1]);
    assertEquals(0x000066, (int) webSafeColorArray[2]);
    assertEquals(0x003300, (int) webSafeColorArray[6]);
    assertEquals(0x330000, (int) webSafeColorArray[36]);

    private BufferCache() {
        // Utility class - not instantiable
    }

    private static final int MAX_BUFFERS = Config.getInt("jcifs.smb1.smb.maxBuffers", 16);
    private static final int MAX_BUFFER_SIZE = 0x100000; // 1MB maximum

    // Use concurrent queue for lock-free operations
    private static final java.util.concurrent.ConcurrentLinkedQueue<byte[]> bufferQueue =
            new java.util.concurrent.ConcurrentLinkedQueue<>();

        // The validation in getBuffer() ensures size is within bounds (0 < size <= 1MB)
        assertTrue(buffer.length > 0, "Buffer size should be positive");
        assertTrue(buffer.length <= 0x100000, "Buffer size should not exceed 1MB");
    }

    /**
     * Test that releaseBuffer validates buffer before accepting it.
     */
    @Test
    public void testReleaseBufferValidation() {

          +
          // Three byte characters
          THREE_BYTE_ROUNDTRIPPABLE_CHARACTERS;

  // 1,048,576 [chars 0x10000L to 0x10FFFF]
  private static final long FOUR_BYTE_ROUNDTRIPPABLE_CHARACTERS = 0x10FFFF - 0x10000L + 1;

  // 289,571,839
  private static final long EXPECTED_FOUR_BYTE_ROUNDTRIPPABLE_COUNT =
      // All one byte characters