Program: 152829
Project: 152829
Buggy source:
/** 
 * validate the value for a remote (repository) location.
 */
public FormValidation doCheckRemote(StaplerRequest req,@AncestorInPath AbstractProject context,@QueryParameter String value){
  String url=Util.nullify(value);
  if (url == null)   return FormValidation.ok();
  url=url.trim();
  if (isValidateRemoteUpToVar()) {
    url=(url.indexOf('$') != -1) ? url.substring(0,url.indexOf('$')) : url;
  }
  if (!URL_PATTERN.matcher(url).matches())   return FormValidation.errorWithMarkup(Messages.SubversionSCM_doCheckRemote_invalidUrl());
  if (!Hudson.getInstance().hasPermission(Hudson.ADMINISTER))   return FormValidation.ok();
  try {
    SVNURL repoURL=SVNURL.parseURIDecoded(url);
    if (checkRepositoryPath(context,repoURL) != SVNNodeKind.NONE)     return FormValidation.ok();
    SVNRepository repository=null;
    try {
      repository=getRepository(context,repoURL);
      long rev=repository.getLatestRevision();
      String repoPath=getRelativePath(repoURL,repository);
      String p=repoPath;
      while (p.length() > 0) {
        p=SVNPathUtil.removeTail(p);
        if (repository.checkPath(p,rev) == SVNNodeKind.DIR) {
          List<SVNDirEntry> entries=new ArrayList<SVNDirEntry>();
          repository.getDir(p,rev,false,entries);
          List<String> paths=new ArrayList<String>();
          for (          SVNDirEntry e : entries)           if (e.getKind() == SVNNodeKind.DIR)           paths.add(e.getName());
          String head=SVNPathUtil.head(repoPath.substring(p.length() + 1));
          String candidate=EditDistance.findNearest(head,paths);
          return FormValidation.error(Messages.SubversionSCM_doCheckRemote_badPathSuggest(p,head,candidate != null ? "String_Node_Str" + candidate : "String_Node_Str"));
        }
      }
      return FormValidation.error(Messages.SubversionSCM_doCheckRemote_badPath(repoPath));
    }
  finally {
      if (repository != null)       repository.closeSession();
    }
  }
 catch (  SVNException e) {
    LOGGER.log(Level.INFO,"String_Node_Str" + url,e);
    String message=Messages.SubversionSCM_doCheckRemote_exceptionMsg1(Util.escape(url),Util.escape(e.getErrorMessage().getFullMessage()),"String_Node_Str" + "String_Node_Str" + "String_Node_Str") + "String_Node_Str" + Functions.printThrowable(e)+ "String_Node_Str"+ Messages.SubversionSCM_doCheckRemote_exceptionMsg2("String_Node_Str" + SubversionSCM.class.getName() + "String_Node_Str"+ url);
    return FormValidation.errorWithMarkup(message);
  }
}

Fixed version (ground truth):
/** 
 * validate the value for a remote (repository) location.
 */
public FormValidation doCheckRemote(StaplerRequest req,@AncestorInPath AbstractProject context,@QueryParameter String value){
  String url=Util.nullify(value);
  if (url == null)   return FormValidation.ok();
  url=url.trim();
  if (isValidateRemoteUpToVar()) {
    url=(url.indexOf('$') != -1) ? url.substring(0,url.indexOf('$')) : url;
  }
  if (!URL_PATTERN.matcher(url).matches())   return FormValidation.errorWithMarkup(Messages.SubversionSCM_doCheckRemote_invalidUrl());
  if (!Hudson.getInstance().hasPermission(Hudson.ADMINISTER))   return FormValidation.ok();
  try {
    String urlWithoutRevision=getUrlWithoutRevision(url);
    SVNURL repoURL=SVNURL.parseURIDecoded(urlWithoutRevision);
    if (checkRepositoryPath(context,repoURL) != SVNNodeKind.NONE) {
      SVNRevision revision=getRevisionFromRemoteUrl(url);
      if (revision != null && !revision.isValid()) {
        return FormValidation.errorWithMarkup(Messages.SubversionSCM_doCheckRemote_invalidRevision());
      }
      return FormValidation.ok();
    }
    SVNRepository repository=null;
    try {
      repository=getRepository(context,repoURL);
      long rev=repository.getLatestRevision();
      String repoPath=getRelativePath(repoURL,repository);
      String p=repoPath;
      while (p.length() > 0) {
        p=SVNPathUtil.removeTail(p);
        if (repository.checkPath(p,rev) == SVNNodeKind.DIR) {
          List<SVNDirEntry> entries=new ArrayList<SVNDirEntry>();
          repository.getDir(p,rev,false,entries);
          List<String> paths=new ArrayList<String>();
          for (          SVNDirEntry e : entries)           if (e.getKind() == SVNNodeKind.DIR)           paths.add(e.getName());
          String head=SVNPathUtil.head(repoPath.substring(p.length() + 1));
          String candidate=EditDistance.findNearest(head,paths);
          return FormValidation.error(Messages.SubversionSCM_doCheckRemote_badPathSuggest(p,head,candidate != null ? "String_Node_Str" + candidate : "String_Node_Str"));
        }
      }
      return FormValidation.error(Messages.SubversionSCM_doCheckRemote_badPath(repoPath));
    }
  finally {
      if (repository != null)       repository.closeSession();
    }
  }
 catch (  SVNException e) {
    LOGGER.log(Level.INFO,"String_Node_Str" + url,e);
    String message=Messages.SubversionSCM_doCheckRemote_exceptionMsg1(Util.escape(url),Util.escape(e.getErrorMessage().getFullMessage()),"String_Node_Str" + "String_Node_Str" + "String_Node_Str") + "String_Node_Str" + Functions.printThrowable(e)+ "String_Node_Str"+ Messages.SubversionSCM_doCheckRemote_exceptionMsg2("String_Node_Str" + SubversionSCM.class.getName() + "String_Node_Str"+ url);
    return FormValidation.errorWithMarkup(message);
  }
}