Примеры ошибок, обнаруженных с помощью диагностики V6019

V6019. Unreachable code detected. It is possible that an error is present.


CUBA Platform

V6019 Unreachable code detected. It is possible that an error is present. TransactionTest.java(283)


private void throwException() {
  throw new RuntimeException(TEST_EXCEPTION_MSG);
}

@Test
public void testSuspendRollback() {
  Transaction tx = cont.persistence().createTransaction();
  try {
    ....
    Transaction tx1 = cont.persistence().createTransaction();
    try {
      EntityManager em1 = cont.persistence().getEntityManager();
      assertTrue(em != em1);
      Server server1 = em1.find(Server.class, server.getId());
      assertNull(server1);
      throwException();        // <=
      tx1.commit();            // <=
    } catch (Exception e) {
      //
    } finally {
      tx1.end();
    }

    tx.commit();
  } finally {
    tx.end();
  }
}

Similar errors can be found in some other places:

  • V6019 Unreachable code detected. It is possible that an error is present. TransactionTest.java(218)
  • V6019 Unreachable code detected. It is possible that an error is present. TransactionTest.java(163)
  • V6019 Unreachable code detected. It is possible that an error is present. TransactionTest.java(203)
  • And 4 additional diagnostic messages.

Apache Dubbo

V6019 Unreachable code detected. It is possible that an error is present. GrizzlyCodecAdapter.java(136)


@Override
public NextAction handleRead(FilterChainContext context) throws IOException {
  ....
  do {
    savedReadIndex = frame.readerIndex();
    try {
      msg = codec.decode(channel, frame);
    } catch (Exception e) {
      previousData = ChannelBuffers.EMPTY_BUFFER;
      throw new IOException(e.getMessage(), e);
    }
    if (msg == Codec2.DecodeResult.NEED_MORE_INPUT) {
      frame.readerIndex(savedReadIndex);
        return context.getStopAction();     // <=
    } else {
      if (savedReadIndex == frame.readerIndex()) {
        previousData = ChannelBuffers.EMPTY_BUFFER;
        throw new IOException("Decode without read data.");   // <=
      }
      if (msg != null) {
        context.setMessage(msg);
        return context.getInvokeAction();     // <=
      } else {
        return context.getInvokeAction();    // <=
      }
    }
  } while (frame.readable());     // <=
  ....
}

Apache Hadoop

V6019 Unreachable code detected. It is possible that an error is present. TestReplaceDatanodeFailureReplication.java(222)


private void
verifyFileContent(....) throws IOException
{
  LOG.info("Verify the file");
  for (int i = 0; i < slowwriters.length; i++) {
    LOG.info(slowwriters[i].filepath + ....);
    FSDataInputStream in = null;
    try {
      in = fs.open(slowwriters[i].filepath);
      for (int j = 0, x;; j++) {
        x = in.read();
        if ((x) != -1) {
          Assert.assertEquals(j, x);
        } else {
          return;
        }
      }
    } finally {
      IOUtils.closeStream(in);
    }
  }
}

Apache Hadoop

V6019 Unreachable code detected. It is possible that an error is present. TestNodeManager.java(176)


@Test
public void
testCreationOfNodeLabelsProviderService() throws InterruptedException {
  try {
    ....
  } catch (Exception e) {
    Assert.fail("Exception caught");
    e.printStackTrace();
  }
}

Similar errors can be found in some other places:

  • V6019 Unreachable code detected. It is possible that an error is present. TestResourceTrackerService.java(928)
  • V6019 Unreachable code detected. It is possible that an error is present. TestResourceTrackerService.java(737)
  • V6019 Unreachable code detected. It is possible that an error is present. TestResourceTrackerService.java(685)

Ghidra

V6019 Unreachable code detected. It is possible that an error is present. ExternalNamesTableModel.java(109)


public void setValueAt(Object aValue, int row, int column) {
  ....
  int index = indexOf(newName);
  if (index >= 0) {
    Window window = tool.getActiveWindow();
    Msg.showInfo(getClass(), window, "Duplicate Name",
                 "Name already exists: " + newName);
    return;
  }

  ExternalPath path = paths.get(row); // <=
  ....
}
private int indexOf(String name) {
  for (int i = 0; i < paths.size(); i++) {
    ExternalPath path = paths.get(i);
    if (path.getName().equals(name)) {
      return i;
    }
  }
  return 0;
}

WildFly

V6019 Unreachable code detected. It is possible that an error is present. EJB3Subsystem12Parser.java(79)


protected void readAttributes(final XMLExtendedStreamReader reader) {
  throws XMLStreamException {
    for (int i = 0; i < reader.getAttributeCount(); i++) {
      ParseUtils.requireNoNamespaceAttribute(reader, i);
      throw ParseUtils.unexpectedAttribute(reader, i);
    }
  }
}

Bouncy Castle

V6019 Unreachable code detected. It is possible that an error is present. XMSSTest.java(170)


public void testSignSHA256CompleteEvenHeight2() {
    ....
    int height = 10;
    ....
    for (int i = 0; i < (1 << height); i++) {
        byte[] signature = xmss.sign(new byte[1024]);
        switch (i) {
            case 0x005b:
                assertEquals(signatures[0], Hex.toHexString(signature));
                break;
            case 0x0822:
                assertEquals(signatures[1], Hex.toHexString(signature));
                break;
            ....
        }
    }
}


Найденные ошибки

Проверено проектов
412
Собрано ошибок
14 132

А ты совершаешь ошибки в коде?

Проверь с помощью
PVS-Studio

Статический анализ
кода для C, C++, C#
и Java

goto PVS-Studio;
Этот сайт использует куки и другие технологии, чтобы предоставить вам более персонализированный опыт. Продолжая просмотр страниц нашего веб-сайта, вы принимаете условия использования этих файлов. Если вы не хотите, чтобы ваши данные обрабатывались, пожалуйста, покиньте данный сайт. Подробнее →
Принять