Program: 154022
Project: 154022
Buggy source:
/** 
 * Force the destination image to be single-banded.
 */
private static ImageLayout layoutHelper(ImageLayout layout,RenderedImage source,LookupTableJAI colorMap){
  ImageLayout il=layout == null ? new ImageLayout() : (ImageLayout)layout.clone();
  il.setMinX(source.getMinX());
  il.setMinY(source.getMinY());
  il.setWidth(source.getWidth());
  il.setHeight(source.getHeight());
  SampleModel sm=il.getSampleModel(source);
  if (colorMap.getNumBands() == 1 && colorMap.getNumEntries() == 2 && !ImageUtil.isBinary(il.getSampleModel(source))) {
    sm=new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE,il.getTileWidth(source),il.getTileHeight(source),1);
    il.setSampleModel(sm);
  }
  if (sm.getNumBands() != 1) {
    sm=RasterFactory.createComponentSampleModel(sm,sm.getTransferType(),sm.getWidth(),sm.getHeight(),1);
    il.setSampleModel(sm);
    ColorModel cm=il.getColorModel(null);
    if (cm != null && !JDKWorkarounds.areCompatibleDataModels(sm,cm)) {
      il.unsetValid(ImageLayout.COLOR_MODEL_MASK);
    }
  }
  if ((layout == null || !il.isValid(ImageLayout.COLOR_MODEL_MASK)) && source.getSampleModel().getDataType() == DataBuffer.TYPE_BYTE && sm.getDataType() == DataBuffer.TYPE_BYTE && colorMap.getDataType() == DataBuffer.TYPE_BYTE && colorMap.getNumBands() == 3) {
    ColorModel cm=source.getColorModel();
    if (cm == null || (cm != null && cm.getColorSpace().isCS_sRGB())) {
      int size=colorMap.getNumEntries();
      byte[][] cmap=new byte[3][256];
      for (int i=0; i < 3; i++) {
        byte[] band=cmap[i];
        byte[] data=colorMap.getByteData(i);
        int offset=colorMap.getOffset(i);
        int end=offset + size;
        for (int j=0; j < offset; j++) {
          band[j]=(byte)0;
        }
        for (int j=offset; j < end; j++) {
          band[j]=data[j - offset];
        }
        for (int j=end; j < 256; j++) {
          band[j]=(byte)0xFF;
        }
      }
      il.setColorModel(new IndexColorModel(8,256,cmap[0],cmap[1],cmap[2]));
    }
  }
  return il;
}

Fixed version (ground truth):
/** 
 * Force the destination image to be single-banded.
 */
private static ImageLayout layoutHelper(ImageLayout layout,RenderedImage source,LookupTableJAI colorMap){
  ImageLayout il=layout == null ? new ImageLayout() : (ImageLayout)layout.clone();
  il.setMinX(source.getMinX());
  il.setMinY(source.getMinY());
  il.setWidth(source.getWidth());
  il.setHeight(source.getHeight());
  SampleModel sm=il.getSampleModel(source);
  if (colorMap.getNumBands() == 1 && colorMap.getNumEntries() == 2 && !ImageUtil.isBinary(il.getSampleModel(source))) {
    sm=new MultiPixelPackedSampleModel(DataBuffer.TYPE_BYTE,il.getTileWidth(source),il.getTileHeight(source),1);
    il.setSampleModel(sm);
  }
  if (sm.getNumBands() != 1) {
    sm=RasterFactory.createComponentSampleModel(sm,sm.getTransferType(),sm.getWidth(),sm.getHeight(),1);
    il.setSampleModel(sm);
    ColorModel cm=il.getColorModel(null);
    if (cm != null && !JDKWorkarounds.areCompatibleDataModels(sm,cm)) {
      il.unsetValid(ImageLayout.COLOR_MODEL_MASK);
    }
  }
  int numColorMapBands=colorMap.getNumBands();
  int maxIndex=0;
  for (int i=0; i < numColorMapBands; i++) {
    maxIndex=Math.max(colorMap.getOffset(i) + colorMap.getNumEntries() - 1,maxIndex);
  }
  if ((maxIndex > 255 && sm.getDataType() == DataBuffer.TYPE_BYTE) || (maxIndex > 65535 && sm.getDataType() != DataBuffer.TYPE_INT)) {
    int dataType=maxIndex > 65535 ? DataBuffer.TYPE_INT : DataBuffer.TYPE_USHORT;
    sm=RasterFactory.createComponentSampleModel(sm,dataType,sm.getWidth(),sm.getHeight(),1);
    il.setSampleModel(sm);
    ColorModel cm=il.getColorModel(null);
    if (cm != null && !JDKWorkarounds.areCompatibleDataModels(sm,cm)) {
      il.unsetValid(ImageLayout.COLOR_MODEL_MASK);
    }
  }
  if ((layout == null || !il.isValid(ImageLayout.COLOR_MODEL_MASK)) && source.getSampleModel().getDataType() == DataBuffer.TYPE_BYTE && (sm.getDataType() == DataBuffer.TYPE_BYTE || sm.getDataType() == DataBuffer.TYPE_USHORT) && colorMap.getDataType() == DataBuffer.TYPE_BYTE && colorMap.getNumBands() == 3) {
    ColorModel cm=source.getColorModel();
    if (cm == null || (cm != null && cm.getColorSpace().isCS_sRGB())) {
      int size=colorMap.getNumEntries();
      byte[][] cmap=new byte[3][maxIndex + 1];
      for (int i=0; i < 3; i++) {
        byte[] band=cmap[i];
        byte[] data=colorMap.getByteData(i);
        int offset=colorMap.getOffset(i);
        int end=offset + size;
        for (int j=offset; j < end; j++) {
          band[j]=data[j - offset];
        }
      }
      int numBits=sm.getDataType() == DataBuffer.TYPE_BYTE ? 8 : 16;
      il.setColorModel(new IndexColorModel(numBits,maxIndex + 1,cmap[0],cmap[1],cmap[2]));
    }
  }
  return il;
}