[fpc-devel] Propose: change TComponent.Tag from longint to PtrInt

[Aleš Katona]

The problem here is that if you introduce a changing type to Tag, you're
going to break streaming of the components between various platforms.
However I think simplest would be to simply make the tag something huge
for years to come, like Int64.

The idea with hidden union is nice tho. But you'll need to know how to
stream it precisely and there's also endianness to take care of then.

Ales