Program: 9608
Project: 9608
Buggy source:
/** 
 * Complete the destination directory by copying resources from the source root directories (if the filter is specified) and non-.class files from the input jars  (if XCopyInjars is enabled).
 */
private void completeDestdir(){
  if (!copyInjars && (null == sourceRootCopyFilter)) {
    return;
  }
 else   if (!destDir.canWrite()) {
    String s="String_Node_Str" + destDir;
    throw new BuildException(s);
  }
  final Project project=getProject();
  if (copyInjars) {
    String taskName=getTaskName() + "String_Node_Str";
    String[] paths=injars.list();
    if (!LangUtil.isEmpty(paths)) {
      PatternSet patternSet=new PatternSet();
      patternSet.setProject(project);
      patternSet.setIncludes("String_Node_Str");
      patternSet.setExcludes("String_Node_Str");
      for (int i=0; i < paths.length; i++) {
        Expand unzip=new Expand();
        unzip.setProject(project);
        unzip.setTaskName(taskName);
        unzip.setDest(destDir);
        unzip.setSrc(new File(paths[i]));
        unzip.addPatternset(patternSet);
        unzip.execute();
      }
    }
  }
  if ((null != sourceRootCopyFilter) && (null != sourceRoots)) {
    String[] paths=sourceRoots.list();
    if (!LangUtil.isEmpty(paths)) {
      Copy copy=new Copy();
      copy.setProject(project);
      copy.setTodir(destDir);
      for (int i=0; i < paths.length; i++) {
        FileSet fileSet=new FileSet();
        fileSet.setDir(new File(paths[i]));
        fileSet.setIncludes("String_Node_Str");
        fileSet.setExcludes(sourceRootCopyFilter);
        copy.addFileset(fileSet);
      }
      copy.execute();
    }
  }
}

Fixed version (ground truth):
/** 
 * Complete the destination directory by copying resources from the source root directories (if the filter is specified) and non-.class files from the input jars  (if XCopyInjars is enabled).
 */
private void completeDestdir(){
  if (!copyInjars && (null == sourceRootCopyFilter)) {
    return;
  }
 else   if ((destDir == DEFAULT_DESTDIR) || !destDir.canWrite()) {
    String s="String_Node_Str" + destDir;
    throw new BuildException(s);
  }
  final Project project=getProject();
  if (copyInjars) {
    String taskName=getTaskName() + "String_Node_Str";
    String[] paths=injars.list();
    if (!LangUtil.isEmpty(paths)) {
      PatternSet patternSet=new PatternSet();
      patternSet.setProject(project);
      patternSet.setIncludes("String_Node_Str");
      patternSet.setExcludes("String_Node_Str");
      for (int i=0; i < paths.length; i++) {
        Expand unzip=new Expand();
        unzip.setProject(project);
        unzip.setTaskName(taskName);
        unzip.setDest(destDir);
        unzip.setSrc(new File(paths[i]));
        unzip.addPatternset(patternSet);
        unzip.execute();
      }
    }
  }
  if ((null != sourceRootCopyFilter) && (null != sourceRoots)) {
    String[] paths=sourceRoots.list();
    if (!LangUtil.isEmpty(paths)) {
      Copy copy=new Copy();
      copy.setProject(project);
      copy.setTodir(destDir);
      for (int i=0; i < paths.length; i++) {
        FileSet fileSet=new FileSet();
        fileSet.setDir(new File(paths[i]));
        fileSet.setIncludes("String_Node_Str");
        fileSet.setExcludes(sourceRootCopyFilter);
        copy.addFileset(fileSet);
      }
      copy.execute();
    }
  }
}