From 5c80ee3c916595956f20ddd558549b79211c1a41 Mon Sep 17 00:00:00 2001
From: IngoZenz <i.z@gmx.net>
Date: Sun, 3 Oct 2021 18:53:05 +0200
Subject: [PATCH] Fix "Div by zero" issue when index is empty

---
 app/src/main/AndroidManifest.xml                  | 4 ++--
 app/src/main/java/dnsfilter/DNSFilterManager.java | 2 +-
 app/src/main/java/util/HugePackedSet.java         | 2 ++
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index b8af8231..518d9e60 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="dnsfilter.android"
-    android:versionCode="1505000"
-    android:versionName="1.50.50.0">
+    android:versionCode="1505001"
+    android:versionName="1.50.50.1">
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
diff --git a/app/src/main/java/dnsfilter/DNSFilterManager.java b/app/src/main/java/dnsfilter/DNSFilterManager.java
index 44d6915a..a55e8577 100644
--- a/app/src/main/java/dnsfilter/DNSFilterManager.java
+++ b/app/src/main/java/dnsfilter/DNSFilterManager.java
@@ -64,7 +64,7 @@ of the License, or (at your option) any later version.
 
 public class DNSFilterManager extends ConfigurationAccess  {
 
-	public static final String VERSION = "1505000";
+	public static final String VERSION = "1505001";
 
 	private static DNSFilterManager INSTANCE = new DNSFilterManager();
 
diff --git a/app/src/main/java/util/HugePackedSet.java b/app/src/main/java/util/HugePackedSet.java
index 1d39580e..44263af1 100644
--- a/app/src/main/java/util/HugePackedSet.java
+++ b/app/src/main/java/util/HugePackedSet.java
@@ -108,6 +108,8 @@ public void clear() {
 
 	@Override
 	public boolean contains(Object obj) {
+		if (count == 0)
+			return false;
 		return subsets[ (Math.abs( obj.hashCode() %  slotCount)) ].contains(obj);
 	}