Program: 69887
Project: 69887
Buggy source:
protected void startDiagonalCell(ICellContent cell){
  String imgUri=diagonalCellImageMap.get(cell.getInstanceID().getComponentID());
  if (imgUri == null) {
    DiagonalLineImage imageCreater=new DiagonalLineImage();
    imageCreater.setDiagonalLine(cell.getDiagonalNumber(),cell.getDiagonalStyle(),cell.getDiagonalWidth());
    imageCreater.setAntidiagonalLine(cell.getAntidiagonalNumber(),cell.getAntidiagonalStyle(),cell.getAntidiagonalWidth());
    imageCreater.setImageDpi(imageDpi);
    imageCreater.setImageSize(getCellWidth(cell),getCellHeight(cell));
    IStyle cellComputedStyle=cell.getComputedStyle();
    String strColor=cellComputedStyle.getColor();
    imageCreater.setColor(PropertyUtil.getColor(strColor));
    byte[] imageByteArray=null;
    try {
      imageByteArray=imageCreater.drawImage();
    }
 catch (    IOException e) {
      logger.log(Level.WARNING,e.getMessage(),e);
    }
    if (imageByteArray != null) {
      Image image=new Image(imageByteArray,null,"String_Node_Str");
      imgUri=imageHandler.onCustomImage(image,reportContext);
      if (imgUri != null) {
        diagonalCellImageMap.put(cell.getInstanceID().getComponentID(),imgUri);
      }
    }
  }
  writer.openTag(HTMLTags.TAG_DIV);
  writer.attribute(HTMLTags.ATTR_STYLE,"String_Node_Str");
  if (imgUri != null) {
    writer.openTag(HTMLTags.TAG_IMAGE);
    writer.attributeAllowEmpty(HTMLTags.ATTR_ALT,"String_Node_Str");
    writer.attribute(HTMLTags.ATTR_SRC,imgUri);
    writer.attribute(HTMLTags.ATTR_STYLE,"String_Node_Str");
    if (null == htmlIDNamespace) {
      writer.attribute(HTMLTags.ATTR_ONLOAD,"String_Node_Str");
    }
 else {
      writer.attribute(HTMLTags.ATTR_ONLOAD,htmlIDNamespace + "String_Node_Str");
    }
    writer.closeTag(HTMLTags.TAG_IMAGE);
  }
}

Fixed version (ground truth):
protected void startDiagonalCell(ICellContent cell){
  DimensionType cellWidth=getCellWidth(cell);
  DimensionType cellHeight=getCellHeight(cell);
  if (cellWidth == null || cellHeight == null)   return;
  String imgUri=diagonalCellImageMap.get(cell.getInstanceID().getComponentID());
  if (imgUri == null) {
    DiagonalLineImage imageCreater=new DiagonalLineImage();
    imageCreater.setDiagonalLine(cell.getDiagonalNumber(),cell.getDiagonalStyle(),cell.getDiagonalWidth());
    imageCreater.setAntidiagonalLine(cell.getAntidiagonalNumber(),cell.getAntidiagonalStyle(),cell.getAntidiagonalWidth());
    imageCreater.setImageDpi(imageDpi);
    imageCreater.setImageSize(cellWidth,cellHeight);
    IStyle cellComputedStyle=cell.getComputedStyle();
    String strColor=cellComputedStyle.getColor();
    imageCreater.setColor(PropertyUtil.getColor(strColor));
    byte[] imageByteArray=null;
    try {
      imageByteArray=imageCreater.drawImage();
    }
 catch (    IOException e) {
      logger.log(Level.WARNING,e.getMessage(),e);
    }
    if (imageByteArray != null) {
      Image image=new Image(imageByteArray,null,"String_Node_Str");
      imgUri=imageHandler.onCustomImage(image,reportContext);
      if (imgUri != null) {
        diagonalCellImageMap.put(cell.getInstanceID().getComponentID(),imgUri);
      }
    }
  }
  writer.openTag(HTMLTags.TAG_DIV);
  writer.attribute(HTMLTags.ATTR_STYLE,"String_Node_Str");
  if (imgUri != null) {
    writer.openTag(HTMLTags.TAG_IMAGE);
    writer.attributeAllowEmpty(HTMLTags.ATTR_ALT,"String_Node_Str");
    writer.attribute(HTMLTags.ATTR_SRC,imgUri);
    writer.attribute(HTMLTags.ATTR_STYLE,"String_Node_Str");
    if (null == htmlIDNamespace) {
      writer.attribute(HTMLTags.ATTR_ONLOAD,"String_Node_Str");
    }
 else {
      writer.attribute(HTMLTags.ATTR_ONLOAD,htmlIDNamespace + "String_Node_Str");
    }
    writer.closeTag(HTMLTags.TAG_IMAGE);
  }
}