union "upcasting"

[luserdroog]

We had to modify some code I had written using "union upcasting".

 

http://code.google.com/p/xpost/source/detail?r=60c9fc1e7e100ef3ecd2b93c164711aa0cbf17f2

 

And I was curious about the details about this coding practice, so

I posed a question on comp.lang.c, to crowd-source some details:

 

https://groups.google.com/d/topic/comp.lang.c/q_zqIcKZjcw/discussion

[luserdroog]

Suffice to say: it's bad. We won't do it anymore. We won't tell any body.

 

You don't really need to see what they said. :(