ObjFW  Diff

		void *pool = objc_autoreleasePoolPush();
		const OFUnichar *characters = string.characters;
		size_t length = string.length;

		for (size_t i = 0; i < length; i++) {
			OFUnichar c = characters[i];

			if (c / CHAR_BIT >= _size) {
			if (c / OF_ULONG_BIT >= _size) {
				size_t newSize;

				if (UINT32_MAX - c < 1)
					@throw [OFOutOfRangeException
					    exception];

				newSize = OFRoundUpToPowerOf2(CHAR_BIT, c + 1) /
				    CHAR_BIT;
				newSize = OFRoundUpToPowerOf2(OF_ULONG_BIT,
				    c + 1) / OF_ULONG_BIT;

				_bitset = OFResizeMemory(_bitset, newSize, 1);
				memset(_bitset + _size, '\0', newSize - _size);
				_bitSet = OFResizeMemory(_bitSet, newSize,
				    sizeof(unsigned long));
				memset(_bitSet + _size, '\0',
				    (newSize - _size) * sizeof(unsigned long));

				_size = newSize;
			}

			OFBitsetSet(_bitset, c);
			OFBitSetSet(_bitSet, c);
		}

		objc_autoreleasePoolPop(pool);
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	OFFreeMemory(_bitset);
	OFFreeMemory(_bitSet);

	[super dealloc];
}

- (bool)characterIsMember: (OFUnichar)character
{
	if (character / CHAR_BIT >= _size)
	if (character / OF_ULONG_BIT >= _size)
		return false;

	return OFBitsetIsSet(_bitset, character);
	return OFBitSetIsSet(_bitSet, character);
}
@end