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Examples of errors detected by the V604…

Examples of errors detected by the V6048 diagnostic

V6048. This expression can be simplified. One of the operands in the operation equals NN. Probably it is a mistake.


Ghidra

V6048 This expression can be simplified. Operand 'defaultGroupSizeSpace' in the operation equals 1. ByteViewerLayoutModel.java(66)


void setFactorys(FieldFactory[] fieldFactorys,
                 DataFormatModel dataModel, int margin) {
  factorys = new FieldFactory[fieldFactorys.length];

  int x = margin;
  int defaultGroupSizeSpace = 1;
  for (int i = 0; i < factorys.length; i++) {
    factorys[i] = fieldFactorys[i];
    factorys[i].setStartX(x);
    x += factorys[i].getWidth();
    // add in space between groups
    if (((i + 1) % defaultGroupSizeSpace) == 0) { // <=
      x += margin * dataModel.getUnitDelimiterSize();
    }
  }
  width = x - margin * dataModel.getUnitDelimiterSize() + margin;
  layoutChanged();
}

Apache Flink

V6048 This expression can be simplified. Operand 'index' in the operation equals 0. CollectionUtil.java(76)


public static <T> Collection<List<T>> partition(Collection<T> elements,
                                                int numBuckets)
{
  Map<Integer, List<T>> buckets = new HashMap<>(numBuckets);

  int initialCapacity = elements.size() / numBuckets;

  int index = 0;
  for (T element : elements)
  {
    int bucket = index % numBuckets;                                 // <=
    buckets.computeIfAbsent(bucket,
                            key -> new ArrayList<>(initialCapacity))

           .add(element);
  }

  return buckets.values();
}

Rhino

V6048 This expression can be simplified. Operand 'lParenIndex' in the operation equals 0. ClassFileWriter.java(2658)


public class ClassFileWriter {
  ....
  private int[] createInitialLocals() {
    int[] initialLocals = new int[itsMaxLocals];
    ....
    // No error checking should be necessary, sizeOfParameters does this
    String type = itsCurrentMethod.getType();
    int lParenIndex = type.indexOf('(');
    int rParenIndex = type.indexOf(')');
    if (lParenIndex != 0 || rParenIndex < 0) {
      throw new IllegalArgumentException("bad method type");
    }
    int start = lParenIndex + 1;                                  // <=
    StringBuilder paramType = new StringBuilder();
    while (start < rParenIndex) {
      switch (type.charAt(start)) {
      ....
      }
      ....
    }
    return initialLocals;
  }
  ....
}

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