🚀 go-pugleaf

Something I guess I didn't make clear in my original posting was that
I was more interested in the effect of expanding sizeof on the
portability of the C++ translator itself.  I.e. it has to know enough
about the machine to calculate sizeof in the first place.  A compiler
I worked on forces individual chars and the starts of char arrays to
be word-aligned; this may not be a totally bizarre requirement but
it might not have been anticipated, and surely there is worse out there.

I didn't find the examples for why sizeof must be expanded
particularly convincing; while CC has to calculate the sizes in those
cases if is to accept and translate them, I am not sure that it should
accept them in the first place.  (To recap one was an array bound
declared in one place as an explicit constant and in another as a
size; the other was using sizes as case labels.)
-- 
David Eppstein, eppstein@cs.columbia.edu, seismo!columbia!cs!eppstein