#fixed code
                             protected void init(Class<T> elementType, long objectCount, 
			NonPrimitiveFieldAllocationConfigType allocateNonPrimitiveFieldsAtOffHeapConfigType, 
			DirectMemoryService directMemoryService) {
		super.init(elementType, allocateNonPrimitiveFieldsAtOffHeapConfigType, directMemoryService);
		
		if (elementType.isAnnotation()) {
			throw new IllegalArgumentException("Annotation class " + "(" + elementType.getName() + ")" + 
											   " is not supported !");
		}
		if (elementType.isInterface()) {
			throw new IllegalArgumentException("Interface class " + "(" + elementType.getName() + ")" + 
											   " is not supported !");
		}
		if (elementType.isAnonymousClass()) {
			throw new IllegalArgumentException("Anonymous class " + "(" + elementType.getName() + ")" + 
											   " is not supported !");
		}
		this.elementType = elementType;
		this.objectCount = objectCount;
		this.usedObjectCount = 0;
		this.directMemoryService = directMemoryService;
		
		inUseBlockCount = objectCount;
		inUseBlockAddress = directMemoryService.allocateMemory(inUseBlockCount);
		sampleObject = JvmUtil.getSampleInstance(elementType);
		if (sampleObject == null) {
			throw new IllegalStateException("Unable to create a sample object for class " + elementType.getName());
		}
		sampleHeader = directMemoryService.getLong(sampleObject, 0L);
		objectSize = directMemoryService.sizeOfObject(sampleObject);
		offHeapSampleObjectAddress = directMemoryService.allocateMemory(objectSize);
		directMemoryService.copyMemory(sampleObject, 0L, null, offHeapSampleObjectAddress, objectSize);
		/*
		for (int i = 0; i < objectSize; i += JvmUtil.LONG_SIZE) {
			directMemoryService.putLong(offHeapSampleObjectAddress + i, directMemoryService.getLong(sampleObject, i));
		}
		*/
		/*
		for (int i = 0; i < objectSize; i++) {
			directMemoryService.putByte(offHeapSampleObjectAddress + i, directMemoryService.getByte(sampleObject, i));
		}
		*/
		// directMemoryService.copyMemory(directMemoryService.addressOf(sampleObject), offHeapSampleObjectAddress, objectSize);
	}
#vulnerable code 
                             protected void init(Class<T> elementType, long objectCount, 
			NonPrimitiveFieldAllocationConfigType allocateNonPrimitiveFieldsAtOffHeapConfigType, 
			DirectMemoryService directMemoryService) {
		super.init(elementType, allocateNonPrimitiveFieldsAtOffHeapConfigType, directMemoryService);
		
		if (elementType.isAnnotation()) {
			throw new IllegalArgumentException("Annotation class " + "(" + elementType.getName() + ")" + 
											   " is not supported !");
		}
		if (elementType.isInterface()) {
			throw new IllegalArgumentException("Interface class " + "(" + elementType.getName() + ")" + 
											   " is not supported !");
		}
		if (elementType.isAnonymousClass()) {
			throw new IllegalArgumentException("Anonymous class " + "(" + elementType.getName() + ")" + 
											   " is not supported !");
		}
		this.elementType = elementType;
		this.objectCount = objectCount;
		this.usedObjectCount = 0;
		this.directMemoryService = directMemoryService;
		
		inUseBlockCount = objectCount;
		inUseBlockAddress = directMemoryService.allocateMemory(inUseBlockCount);
		sampleObject = JvmUtil.getSampleInstance(elementType);
		if (sampleObject == null) {
			throw new IllegalStateException("Unable to create a sample object for class " + elementType.getName());
		}
		synchronized (sampleObject) {
			sampleHeader = directMemoryService.getLong(sampleObject, 0L);
		}
		objectSize = directMemoryService.sizeOfObject(sampleObject);
		offHeapSampleObjectAddress = directMemoryService.allocateMemory(objectSize);
		directMemoryService.copyMemory(sampleObject, 0L, null, offHeapSampleObjectAddress, objectSize);
		/*
		for (int i = 0; i < objectSize; i += JvmUtil.LONG_SIZE) {
			directMemoryService.putLong(offHeapSampleObjectAddress + i, directMemoryService.getLong(sampleObject, i));
		}
		*/
		/*
		for (int i = 0; i < objectSize; i++) {
			directMemoryService.putByte(offHeapSampleObjectAddress + i, directMemoryService.getByte(sampleObject, i));
		}
		*/
		// directMemoryService.copyMemory(directMemoryService.addressOf(sampleObject), offHeapSampleObjectAddress, objectSize);
	} 
                            #location 23 
                            #vulnerability type THREAD_SAFETY_VIOLATION