Program: 9101
Project: 9101
Buggy source:
/** 
 * Add to list any path or plural arguments.
 */
protected void addListArgs(List list) throws BuildException {
  addFlaggedPath("String_Node_Str",classpath,list);
  addFlaggedPath("String_Node_Str",bootclasspath,list);
  addFlaggedPath("String_Node_Str",extdirs,list);
  addFlaggedPath("String_Node_Str",aspectpath,list);
  addFlaggedPath("String_Node_Str",injars,list);
  addFlaggedPath("String_Node_Str",inpath,list);
  addFlaggedPath("String_Node_Str",sourceRoots,list);
  if (argfiles != null) {
    String[] files=argfiles.list();
    for (int i=0; i < files.length; i++) {
      File argfile=project.resolveFile(files[i]);
      if (check(argfile,files[i],false,location)) {
        list.add("String_Node_Str");
        list.add(argfile.getAbsolutePath());
      }
    }
  }
  if (inxmlfiles != null) {
    String[] files=inxmlfiles.list();
    for (int i=0; i < files.length; i++) {
      File inxmlfile=project.resolveFile(files[i]);
      if (check(inxmlfile,files[i],false,location)) {
        list.add("String_Node_Str");
        list.add(inxmlfile.getAbsolutePath());
      }
    }
  }
  if (srcdir != null) {
    String[] dirs=srcdir.list();
    for (int i=0; i < dirs.length; i++) {
      File dir=project.resolveFile(dirs[i]);
      check(dir,dirs[i],true,location);
      String[] files=getDirectoryScanner(dir).getIncludedFiles();
      for (int j=0; j < files.length; j++) {
        File file=new File(dir,files[j]);
        if (FileUtil.hasSourceSuffix(file)) {
          if (!list.contains(file.getAbsolutePath())) {
            list.add(file.getAbsolutePath());
          }
        }
      }
    }
  }
  if (0 < adapterFiles.size()) {
    for (Iterator iter=adapterFiles.iterator(); iter.hasNext(); ) {
      File file=(File)iter.next();
      if (file.canRead() && FileUtil.hasSourceSuffix(file)) {
        list.add(file.getAbsolutePath());
      }
 else {
        this.logger.warning("String_Node_Str" + file);
      }
    }
  }
}

Fixed version (ground truth):
/** 
 * Add to list any path or plural arguments.
 */
protected void addListArgs(List<String> list) throws BuildException {
  addFlaggedPath("String_Node_Str",classpath,list);
  addFlaggedPath("String_Node_Str",bootclasspath,list);
  addFlaggedPath("String_Node_Str",extdirs,list);
  addFlaggedPath("String_Node_Str",aspectpath,list);
  addFlaggedPath("String_Node_Str",injars,list);
  addFlaggedPath("String_Node_Str",inpath,list);
  addFlaggedPath("String_Node_Str",sourceRoots,list);
  if (this.compilerArgs != null) {
    for (    CompilerArg compilerArg : compilerArgs) {
      list.add(compilerArg.toString());
    }
  }
  if (argfiles != null) {
    String[] files=argfiles.list();
    for (int i=0; i < files.length; i++) {
      File argfile=project.resolveFile(files[i]);
      if (check(argfile,files[i],false,location)) {
        list.add("String_Node_Str");
        list.add(argfile.getAbsolutePath());
      }
    }
  }
  if (inxmlfiles != null) {
    String[] files=inxmlfiles.list();
    for (int i=0; i < files.length; i++) {
      File inxmlfile=project.resolveFile(files[i]);
      if (check(inxmlfile,files[i],false,location)) {
        list.add("String_Node_Str");
        list.add(inxmlfile.getAbsolutePath());
      }
    }
  }
  if (srcdir != null) {
    String[] dirs=srcdir.list();
    for (int i=0; i < dirs.length; i++) {
      File dir=project.resolveFile(dirs[i]);
      check(dir,dirs[i],true,location);
      String[] files=getDirectoryScanner(dir).getIncludedFiles();
      for (int j=0; j < files.length; j++) {
        File file=new File(dir,files[j]);
        if (FileUtil.hasSourceSuffix(file)) {
          if (!list.contains(file.getAbsolutePath())) {
            list.add(file.getAbsolutePath());
          }
        }
      }
    }
  }
  if (0 < adapterFiles.size()) {
    for (Iterator iter=adapterFiles.iterator(); iter.hasNext(); ) {
      File file=(File)iter.next();
      if (file.canRead() && FileUtil.hasSourceSuffix(file)) {
        list.add(file.getAbsolutePath());
      }
 else {
        this.logger.warning("String_Node_Str" + file);
      }
    }
  }
}