ObjFW  Check-in [4eb87f934f]

- (void*)last
{
	return data + (items - 1) * itemsize;
}

- add: (void*)item
{
	if (SIZE_MAX - items < 1 || items + 1 > SIZE_MAX / itemsize)
	if (SIZE_MAX - items < 1)
		@throw [OFOutOfRangeException newWithClass: isa];

	data = [self resizeMem: data
		      toNItems: items + 1
		      withSize: itemsize];

	memcpy(data + items++ * itemsize, item, itemsize);

	return self;
}

- addNItems: (size_t)nitems
 fromCArray: (void*)carray
{
	if (nitems > SIZE_MAX - items || items + nitems > SIZE_MAX / itemsize)
	if (nitems > SIZE_MAX - items)
		@throw [OFOutOfRangeException newWithClass: isa];

	data = [self resizeMem: data
		      toNItems: items + nitems
		      withSize: itemsize];

	memcpy(data + items * itemsize, carray, nitems * itemsize);