Conditional compilation inside asm and enum declarations

[bearophile]

Walter Bright:
> Using the bottom two bits as flags (because the pointers were aligned) 
> is not all that uncommon. I've seen it done by major companies on some 
> major, very successful projects.

That's done often enough, one or two bits in tagged pointers are useful to implement various data structures (and they are used by garbage collectors too). I even used tagged pointers once in D, using memory allocated from the C heap.

Bye,
bearophile