Program: 15431
Project: 15431
Buggy source:
public static void onLinkClicked(final Activity activity,final String url,final boolean forceNoImage,final RedditPost post){
  if (url.startsWith("String_Node_Str")) {
    final Uri rrUri=Uri.parse(url);
    if (rrUri.getAuthority().equals("String_Node_Str")) {
      final AlertDialog.Builder builder=new AlertDialog.Builder(activity);
      builder.setTitle(rrUri.getQueryParameter("String_Node_Str"));
      builder.setMessage(rrUri.getQueryParameter("String_Node_Str"));
      AlertDialog alert=builder.create();
      alert.show();
      return;
    }
  }
  if (!forceNoImage) {
    final String imageUrl=getImageUrl(url);
    if (imageUrl != null) {
      final Intent intent=new Intent(activity,ImageViewActivity.class);
      intent.setData(Uri.parse(imageUrl));
      intent.putExtra("String_Node_Str",post);
      activity.startActivity(intent);
      return;
    }
  }
  final Matcher redditCommentsMatcher=redditCommentsPattern.matcher(url);
  if (redditCommentsMatcher.find()) {
    final Intent intent=new Intent(activity,CommentListingActivity.class);
    intent.putExtra("String_Node_Str",redditCommentsMatcher.group(2));
    activity.startActivity(intent);
    return;
  }
  final Matcher redditUserMatcher=redditUserPattern.matcher(url);
  if (redditUserMatcher.find()) {
    UserProfileDialog.newInstance(redditUserMatcher.group(2)).show(activity);
    return;
  }
  final Matcher redditSubredditMatcher=subredditPattern.matcher(url);
  if (redditSubredditMatcher.find()) {
    final String subredditUrl=redditSubredditMatcher.group(1);
    final Intent intent=new Intent(activity,PostListingActivity.class);
    intent.putExtra("String_Node_Str",new RedditSubreddit(subredditUrl,subredditUrl,true));
    activity.startActivity(intent);
    return;
  }
  final Matcher shortSubredditMatcher=shortSubredditPattern.matcher(url);
  if (shortSubredditMatcher.find()) {
    final String subredditUrl="String_Node_Str" + shortSubredditMatcher.group(1);
    final Intent intent=new Intent(activity,PostListingActivity.class);
    intent.putExtra("String_Node_Str",new RedditSubreddit(subredditUrl,subredditUrl,true));
    activity.startActivity(intent);
    return;
  }
  if (youtubeDotComPattern.matcher(url).matches() || vimeoPattern.matcher(url).matches()) {
    final Intent intent=new Intent(Intent.ACTION_VIEW);
    intent.setData(Uri.parse(url.replaceAll("String_Node_Str","String_Node_Str")));
    activity.startActivity(intent);
  }
 else {
    final Matcher youtuDotBeMatcher=youtuDotBePattern.matcher(url);
    if (youtuDotBeMatcher.find() && youtuDotBeMatcher.group(1) != null) {
      final String youtuBeUrl="String_Node_Str" + youtuDotBeMatcher.group(1) + (youtuDotBeMatcher.group(2).length() > 0 ? "String_Node_Str" + youtuDotBeMatcher.group(2).substring(1) : "String_Node_Str");
      final Intent intent=new Intent(Intent.ACTION_VIEW);
      intent.setData(Uri.parse(youtuBeUrl));
      activity.startActivity(intent);
    }
 else {
      final Intent intent=new Intent(activity,WebViewActivity.class);
      intent.putExtra("String_Node_Str",url);
      intent.putExtra("String_Node_Str",post);
      activity.startActivity(intent);
    }
  }
}

Fixed version (ground truth):
public static void onLinkClicked(final Activity activity,final String url,final boolean forceNoImage,final RedditPost post){
  if (url.startsWith("String_Node_Str")) {
    final Uri rrUri=Uri.parse(url);
    if (rrUri.getAuthority().equals("String_Node_Str")) {
      new Handler().post(new Runnable(){
        public void run(){
          final AlertDialog.Builder builder=new AlertDialog.Builder(activity);
          builder.setTitle(rrUri.getQueryParameter("String_Node_Str"));
          builder.setMessage(rrUri.getQueryParameter("String_Node_Str"));
          AlertDialog alert=builder.create();
          alert.show();
        }
      }
);
      return;
    }
  }
  if (!forceNoImage) {
    final String imageUrl=getImageUrl(url);
    if (imageUrl != null) {
      final Intent intent=new Intent(activity,ImageViewActivity.class);
      intent.setData(Uri.parse(imageUrl));
      intent.putExtra("String_Node_Str",post);
      activity.startActivity(intent);
      return;
    }
  }
  final Matcher redditCommentsMatcher=redditCommentsPattern.matcher(url);
  if (redditCommentsMatcher.find()) {
    final Intent intent=new Intent(activity,CommentListingActivity.class);
    intent.putExtra("String_Node_Str",redditCommentsMatcher.group(2));
    activity.startActivity(intent);
    return;
  }
  final Matcher redditUserMatcher=redditUserPattern.matcher(url);
  if (redditUserMatcher.find()) {
    UserProfileDialog.newInstance(redditUserMatcher.group(2)).show(activity);
    return;
  }
  final Matcher redditSubredditMatcher=subredditPattern.matcher(url);
  if (redditSubredditMatcher.find()) {
    final String subredditUrl=redditSubredditMatcher.group(1);
    final Intent intent=new Intent(activity,PostListingActivity.class);
    intent.putExtra("String_Node_Str",new RedditSubreddit(subredditUrl,subredditUrl,true));
    activity.startActivity(intent);
    return;
  }
  final Matcher shortSubredditMatcher=shortSubredditPattern.matcher(url);
  if (shortSubredditMatcher.find()) {
    final String subredditUrl="String_Node_Str" + shortSubredditMatcher.group(1);
    final Intent intent=new Intent(activity,PostListingActivity.class);
    intent.putExtra("String_Node_Str",new RedditSubreddit(subredditUrl,subredditUrl,true));
    activity.startActivity(intent);
    return;
  }
  if (youtubeDotComPattern.matcher(url).matches() || vimeoPattern.matcher(url).matches()) {
    final Intent intent=new Intent(Intent.ACTION_VIEW);
    intent.setData(Uri.parse(url.replaceAll("String_Node_Str","String_Node_Str")));
    activity.startActivity(intent);
  }
 else {
    final Matcher youtuDotBeMatcher=youtuDotBePattern.matcher(url);
    if (youtuDotBeMatcher.find() && youtuDotBeMatcher.group(1) != null) {
      final String youtuBeUrl="String_Node_Str" + youtuDotBeMatcher.group(1) + (youtuDotBeMatcher.group(2).length() > 0 ? "String_Node_Str" + youtuDotBeMatcher.group(2).substring(1) : "String_Node_Str");
      final Intent intent=new Intent(Intent.ACTION_VIEW);
      intent.setData(Uri.parse(youtuBeUrl));
      activity.startActivity(intent);
    }
 else {
      final Intent intent=new Intent(activity,WebViewActivity.class);
      intent.putExtra("String_Node_Str",url);
      intent.putExtra("String_Node_Str",post);
      activity.startActivity(intent);
    }
  }
}