Program: 57408
Project: 57408
Buggy source:
/** 
 * Render the histogram itself
 * @param gl
 */
private void renderHistogram(GL2 gl){
  if (histogram == null) {
    if (dataDomain != null && tablePerspective != null) {
      if (dataDomain.getLabel().toLowerCase().contains("String_Node_Str")) {
        histogram=TablePerspectiveStatistics.calculateHistogram(dataDomain.getTable(),tablePerspective.getRecordPerspective().getVirtualArray(),tablePerspective.getDimensionPerspective().getVirtualArray(),5);
      }
 else       if (dataDomain.getLabel().toLowerCase().contains("String_Node_Str")) {
        histogram=TablePerspectiveStatistics.calculateHistogram(dataDomain.getTable(),tablePerspective.getRecordPerspective().getVirtualArray(),tablePerspective.getDimensionPerspective().getVirtualArray(),2);
      }
 else {
        histogram=tablePerspective.getContainerStatistics().getHistogram();
      }
    }
 else     if (dataDomain != null) {
      TablePerspective defaultTablePerspective=dataDomain.getDefaultTablePerspective();
      if (dataDomain.getLabel().toLowerCase().contains("String_Node_Str")) {
        histogram=TablePerspectiveStatistics.calculateHistogram(dataDomain.getTable(),defaultTablePerspective.getRecordPerspective().getVirtualArray(),defaultTablePerspective.getDimensionPerspective().getVirtualArray(),5);
      }
 else       if (dataDomain.getLabel().toLowerCase().contains("String_Node_Str")) {
        histogram=TablePerspectiveStatistics.calculateHistogram(dataDomain.getTable(),defaultTablePerspective.getRecordPerspective().getVirtualArray(),defaultTablePerspective.getDimensionPerspective().getVirtualArray(),2);
      }
 else {
        histogram=defaultTablePerspective.getContainerStatistics().getHistogram();
      }
    }
 else {
      return;
    }
  }
  float spacing=(viewFrustum.getWidth() - 2 * sideSpacing) / histogram.size();
  float continuousColorDistance=1.0f / histogram.size();
  float fOneHeightValue=(viewFrustum.getHeight() - 2 * sideSpacing) / histogram.getLargestValue();
  int iCount=0;
  for (int bucketCount=0; bucketCount < histogram.size(); bucketCount++) {
    Integer iValue=histogram.get(bucketCount);
    if (useColor)     gl.glColor3fv(dataDomain.getColorMapper().getColor(continuousColorDistance * iCount + continuousColorDistance / 2),0);
    gl.glLineWidth(3.0f);
    gl.glBegin(GL2.GL_POLYGON);
    gl.glVertex3f(spacing * iCount + sideSpacing,sideSpacing,0);
    gl.glVertex3f(spacing * iCount + sideSpacing,sideSpacing + iValue * fOneHeightValue,0);
    gl.glVertex3f(spacing * (iCount + 1) + sideSpacing,sideSpacing + iValue * fOneHeightValue,0);
    gl.glVertex3f(spacing * (iCount + 1) + sideSpacing,sideSpacing,0);
    gl.glEnd();
    gl.glBegin(GL2GL3.GL_LINE);
    gl.glVertex3f(0,0,0);
    gl.glVertex3f(2,2,2);
    gl.glEnd();
    iCount++;
  }
}

Fixed version (ground truth):
/** 
 * Render the histogram itself
 * @param gl
 */
private void renderHistogram(GL2 gl){
  if (histogram == null) {
    if (dataDomain != null && tablePerspective != null) {
      if (dataDomain.getLabel().toLowerCase().contains("String_Node_Str")) {
        histogram=TablePerspectiveStatistics.calculateHistogram(dataDomain.getTable(),tablePerspective.getRecordPerspective().getVirtualArray(),tablePerspective.getDimensionPerspective().getVirtualArray(),5);
      }
 else       if (dataDomain.getLabel().toLowerCase().contains("String_Node_Str")) {
        histogram=TablePerspectiveStatistics.calculateHistogram(dataDomain.getTable(),tablePerspective.getRecordPerspective().getVirtualArray(),tablePerspective.getDimensionPerspective().getVirtualArray(),2);
      }
 else {
        histogram=tablePerspective.getContainerStatistics().getHistogram();
      }
    }
 else     if (dataDomain != null) {
      TablePerspective defaultTablePerspective=dataDomain.getDefaultTablePerspective();
      if (dataDomain.getLabel().toLowerCase().contains("String_Node_Str")) {
        histogram=TablePerspectiveStatistics.calculateHistogram(dataDomain.getTable(),defaultTablePerspective.getRecordPerspective().getVirtualArray(),defaultTablePerspective.getDimensionPerspective().getVirtualArray(),5);
      }
 else       if (dataDomain.getLabel().toLowerCase().contains("String_Node_Str")) {
        histogram=TablePerspectiveStatistics.calculateHistogram(dataDomain.getTable(),defaultTablePerspective.getRecordPerspective().getVirtualArray(),defaultTablePerspective.getDimensionPerspective().getVirtualArray(),2);
      }
 else {
        histogram=defaultTablePerspective.getContainerStatistics().getHistogram();
      }
    }
 else {
      return;
    }
  }
  float spacing=(viewFrustum.getWidth() - 2 * sideSpacing) / histogram.size();
  float continuousColorDistance=1.0f / histogram.size();
  float fOneHeightValue=(viewFrustum.getHeight() - 2 * sideSpacing) / histogram.getLargestValue();
  int iCount=0;
  for (int bucketCount=0; bucketCount < histogram.size(); bucketCount++) {
    Integer iValue=histogram.get(bucketCount);
    if (useColor)     gl.glColor3fv(dataDomain.getColorMapper().getColor(continuousColorDistance * iCount + continuousColorDistance / 2),0);
    gl.glLineWidth(3.0f);
    gl.glBegin(GL2.GL_POLYGON);
    gl.glVertex3f(spacing * iCount + sideSpacing,sideSpacing,0);
    gl.glVertex3f(spacing * iCount + sideSpacing,sideSpacing + iValue * fOneHeightValue,0);
    gl.glVertex3f(spacing * (iCount + 1) + sideSpacing,sideSpacing + iValue * fOneHeightValue,0);
    gl.glVertex3f(spacing * (iCount + 1) + sideSpacing,sideSpacing,0);
    gl.glEnd();
    gl.glBegin(GL.GL_LINES);
    gl.glVertex3f(0,0,0);
    gl.glVertex3f(2,2,2);
    gl.glEnd();
    iCount++;
  }
}