Issue 5031 - Avoid double deletion of C++ objects

libadblockplus-android/jni/JniLogSystem.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 21 matching lines @@
   {
     delete logLevelClass;
     logLevelClass = NULL;
   }
 }
 
 static jlong JNICALL JniCtor(JNIEnv* env, jclass clazz, jobject callbackObject)
 {
   try
   {
-    return JniPtrToLong(new JniLogSystemCallback(env, callbackObject));
+    return JniPtrToLong(new AdblockPlus::LogSystemPtr(new JniLogSystemCallback(env, callbackObject)));
   }
   CATCH_THROW_AND_RETURN(env, 0)
 }
 
 static void JNICALL JniDtor(JNIEnv* env, jclass clazz, jlong ptr)
 {
-  delete JniLongToTypePtr<JniLogSystemCallback>(ptr);
+  delete JniLongToTypePtr<AdblockPlus::LogSystemPtr>(ptr);
 }
 
 JniLogSystemCallback::JniLogSystemCallback(JNIEnv* env, jobject callbackObject)
   : JniCallbackBase(env, callbackObject), AdblockPlus::LogSystem()
 {
 }
 
 void JniLogSystemCallback::operator()(AdblockPlus::LogSystem::LogLevel logLevel,
     const std::string& message, const std::string& source)
 {
@@ skipping 55 matching lines @@
 static JNINativeMethod methods[] =
 {
   { (char*)"ctor", (char*)"(Ljava/lang/Object;)J", (void*)JniCtor },
   { (char*)"dtor", (char*)"(J)V", (void*)JniDtor }
 };
 
 extern "C" JNIEXPORT void JNICALL Java_org_adblockplus_libadblockplus_LogSystem_registerNatives(JNIEnv *env, jclass clazz)
 {
   env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(methods[0]));
 }