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Examples of errors detected by the V600…

Examples of errors detected by the V6001 diagnostic

V6001. There are identical sub-expressions to the left and to the right of the 'foo' operator.


IntelliJ IDEA Community Edition

V6001 [CWE-571] There are identical sub-expressions '!StringUtil.endsWithChar(name,'"')' to the left and to the right of the '&&' operator. JsonNamesValidator.java 27


public synchronized boolean isIdentifier(@NotNull String name,
                                         final Project project) {
  if (!StringUtil.startsWithChar(name,'\'') &&
      !StringUtil.startsWithChar(name,'\"')) {
    name = "\"" + name;
  }
  if (!StringUtil.endsWithChar(name,'"') &&
      !StringUtil.endsWithChar(name,'\"')) {
    name += "\"";
  }
  ....
}

IntelliJ IDEA Community Edition

V6001 [CWE-570] There are identical sub-expressions 'LoadingOrder.BEFORE_STR_OLD.equalsIgnoreCase(str)' to the left and to the right of the '||' operator. Check lines: 127, 128. ExtensionOrderConverter.java 127


@NonNls public static final String BEFORE_STR_OLD = "before:";
@NonNls public static final String AFTER_STR_OLD = "after:";

private static boolean isBeforeOrAfterKeyword(String str, boolean trimKeyword) {
  return (trimKeyword ? LoadingOrder.BEFORE_STR.trim() :
           LoadingOrder.BEFORE_STR).equalsIgnoreCase(str) ||
         (trimKeyword ? LoadingOrder.AFTER_STR.trim() :
           LoadingOrder.AFTER_STR).equalsIgnoreCase(str) ||
         LoadingOrder.BEFORE_STR_OLD.equalsIgnoreCase(str) ||         // <=
         LoadingOrder.BEFORE_STR_OLD.equalsIgnoreCase(str);           // <=
}

Elasticsearch

V6001 There are identical sub-expressions 'tookInMillis' to the left and to the right of the '==' operator. TermVectorsResponse.java(152)


@Override
public boolean equals(Object obj) {
  ....
  return index.equals(other.index)
      && type.equals(other.type)
      && Objects.equals(id, other.id)
      && docVersion == other.docVersion
      && found == other.found
      && tookInMillis == tookInMillis                        // <=
      && Objects.equals(termVectorList, other.termVectorList);
}

Apache Hadoop

V6001 There are identical sub-expressions 'this.bucketSize' to the left and to the right of the '%' operator. RollingWindow.java(79)


  RollingWindow(int windowLenMs, int numBuckets) {
    buckets = new Bucket[numBuckets];
    for (int i = 0; i < numBuckets; i++) {
      buckets[i] = new Bucket();
    }
    this.windowLenMs = windowLenMs;
    this.bucketSize = windowLenMs / numBuckets;
    if (this.bucketSize % bucketSize != 0) {
      throw new IllegalArgumentException(
          "The bucket size in the rolling window is not integer: windowLenMs= "
              + windowLenMs + " numBuckets= " + numBuckets);
    }
  }

Ghidra

V6001 There are identical sub-expressions 'newDataType.getLength()' to the left and to the right of the '>' operator. DataTypeSelectionEditor.java(366)


private boolean parseDataTypeTextEntry()
throws InvalidDataTypeException {
  ....
  try {
    newDataType = parser.parse(selectionField.getText(),
                               getDataTypeRootForCurrentText());
  }
  catch (CancelledException e) {
    return false;
  }
  if (newDataType != null) {
    if (maxSize >= 0
        && newDataType.getLength() > newDataType.getLength()) { // <=
      throw new InvalidDataTypeException("data-type larger than "
                                         + maxSize + " bytes");
    }
    selectionField.setSelectedValue(newDataType);
    return true;
  }
  return false;
}

Bouncy Castle

V6001 There are identical sub-expressions 'tag == PacketTags.SECRET_KEY' to the left and to the right of the '||' operator. PGPUtil.java(212), PGPUtil.java(212)


public static boolean isKeyRing(byte[] blob) throws IOException {

    BCPGInputStream bIn = new BCPGInputStream(new ByteArrayInputStream(blob));
    int tag = bIn.nextPacketTag();

    return tag == PacketTags.PUBLIC_KEY || tag == PacketTags.PUBLIC_SUBKEY
        || tag == PacketTags.SECRET_KEY || tag == PacketTags.SECRET_KEY;
}

Apache Flink

V6001 There are identical sub-expressions 'processedData' to the left and to the right of the '==' operator. CheckpointStatistics.java(229)


@Override
public boolean equals(Object o)
{
  ....
  CheckpointStatistics that = (CheckpointStatistics) o;
  return id == that.id &&
    savepoint == that.savepoint &&
    triggerTimestamp == that.triggerTimestamp &&
    latestAckTimestamp == that.latestAckTimestamp &&
    stateSize == that.stateSize &&
    duration == that.duration &&
    alignmentBuffered == that.alignmentBuffered &&
    processedData == processedData &&                // <=
    persistedData == that.persistedData &&
    numSubtasks == that.numSubtasks &&
    numAckSubtasks == that.numAckSubtasks &&
    status == that.status &&
    Objects.equals(checkpointType, that.checkpointType) &&
    Objects.equals(
      checkpointStatisticsPerTask,
      that.checkpointStatisticsPerTask);
}

ELKI

V6001 There are identical sub-expressions 'bounds[j + 1]' to the left and to the right of the '!=' operator. CLIQUEUnit.java(252)


private boolean checkDimensions(CLIQUEUnit other, int e) {
    for(int i = 0, j = 0; i < e; i++, j += 2) {
        if (dims[i] != other.dims[i]
            || bounds[j] != other.bounds[j]
            || bounds[j + 1] != bounds[j + 1]) {
          return false;
        }
    }
    return true;
}

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