ObjFW  Diff

		@throw [OFOutOfRangeException exceptionWithClass: isa];

	lastPageByte = of_pagesize - 1;
	newSize = ((count + nItems) * itemSize + lastPageByte) & ~lastPageByte;

	if (size != newSize)
		data = [self resizeMemory: data
				 toNItems: newSize
				   ofSize: itemSize];

	memmove(data + (index + nItems) * itemSize, data + index * itemSize,
	    (count - index) * itemSize);
	memcpy(data + index * itemSize, cArray, nItems * itemSize);

	count += nItems;
	size = newSize;