Program: 91643
Project: 91643
Buggy source:
/** 
 * Creates the grid geometry and collect related metadata. This method shall be invoked exactly once after   {@link #validateMandatoryTags()}. After this method call (if successful),   {@link #gridGeometry} is guaranteed non-nulland can be used as a flag for determining that the build has been completed.
 * @param extent  the image width and height in pixels. Must be two-dimensional.
 * @return {@link #gridGeometry}, guaranteed non-null.
 * @throws FactoryException if an error occurred while creating a CRS or a transform.
 */
public GridGeometry build(final GridExtent extent) throws FactoryException {
  CoordinateReferenceSystem crs=null;
  if (keyDirectory != null) {
    final CRSBuilder helper=new CRSBuilder(reader);
    try {
      crs=helper.build(keyDirectory,numericParameters,asciiParameters);
      description=helper.description;
      cellGeometry=helper.cellGeometry;
    }
 catch (    NoSuchIdentifierException|ParameterNotFoundException e) {
      short key=Resources.Keys.UnsupportedProjectionMethod_1;
      if (e instanceof NoSuchAuthorityCodeException) {
        key=Resources.Keys.UnknownCRS_1;
      }
      reader.owner.warning(reader.resources().getString(key,reader.owner.getDisplayName()),e);
    }
catch (    IllegalArgumentException|NoSuchElementException|ClassCastException e) {
      if (!helper.alreadyReported) {
        reader.owner.warning(null,e);
      }
    }
  }
  boolean pixelIsPoint=CellGeometry.POINT.equals(cellGeometry);
  try {
    final MathTransform gridToCRS;
    if (affine != null) {
      gridToCRS=MathTransforms.linear(affine);
    }
 else {
      gridToCRS=Localization.nonLinear(modelTiePoints);
      pixelIsPoint=true;
    }
    gridGeometry=new GridGeometry(extent,pixelIsPoint ? PixelInCell.CELL_CENTER : PixelInCell.CELL_CORNER,gridToCRS,crs);
  }
 catch (  TransformException e) {
    gridGeometry=new GridGeometry(extent,crs);
    reader.owner.warning(null,e);
  }
  keyDirectory=null;
  numericParameters=null;
  asciiParameters=null;
  modelTiePoints=null;
  affine=null;
  return gridGeometry;
}

Fixed version (ground truth):
/** 
 * Creates the grid geometry and collect related metadata. This method shall be invoked exactly once after   {@link #validateMandatoryTags()}. After this method call (if successful),   {@link #gridGeometry} is guaranteed non-nulland can be used as a flag for determining that the build has been completed.
 * @param extent  the image width and height in pixels. Must be two-dimensional.
 * @return {@link #gridGeometry}, guaranteed non-null.
 * @throws FactoryException if an error occurred while creating a CRS or a transform.
 */
public GridGeometry build(final GridExtent extent) throws FactoryException {
  CoordinateReferenceSystem crs=null;
  if (keyDirectory != null) {
    final CRSBuilder helper=new CRSBuilder(reader);
    try {
      crs=helper.build(keyDirectory,numericParameters,asciiParameters);
      description=helper.description;
      cellGeometry=helper.cellGeometry;
    }
 catch (    NoSuchIdentifierException|ParameterNotFoundException e) {
      short key=Resources.Keys.UnsupportedProjectionMethod_1;
      if (e instanceof NoSuchAuthorityCodeException) {
        key=Resources.Keys.UnknownCRS_1;
      }
      reader.owner.warning(reader.resources().getString(key,reader.owner.getDisplayName()),e);
    }
catch (    IllegalArgumentException|NoSuchElementException|ClassCastException e) {
      if (!helper.alreadyReported) {
        canNotCreate(e);
      }
    }
  }
  boolean pixelIsPoint=CellGeometry.POINT.equals(cellGeometry);
  try {
    final MathTransform gridToCRS;
    if (affine != null) {
      gridToCRS=MathTransforms.linear(affine);
    }
 else {
      gridToCRS=Localization.nonLinear(modelTiePoints);
      pixelIsPoint=true;
    }
    gridGeometry=new GridGeometry(extent,pixelIsPoint ? PixelInCell.CELL_CENTER : PixelInCell.CELL_CORNER,gridToCRS,crs);
  }
 catch (  TransformException e) {
    gridGeometry=new GridGeometry(extent,crs);
    canNotCreate(e);
  }
  keyDirectory=null;
  numericParameters=null;
  asciiParameters=null;
  modelTiePoints=null;
  affine=null;
  return gridGeometry;
}