offsets in structures.

[Geoff Kuenning]

>   The expression can be made portable, at least under UNIX, by
>having
>	extern end;
>somewhere in a header file, and then replacing "0" in the expression by
>"&end".  For maximum portability, of course, use a real object of type
>struct foo in the expression.

>	Sam Kendall

(What Sam is talking about would then read like this:)

>     (char *)(&((struct foo *)&end)->element) - (char *)&end

Good idea, except am not sure &end is the best symbol to use.  Is &end
actually guaranteed to refer to a legal address by itself?  What about the
other "&e" symbols:  etext and edata?  Is it legal is we replace "&end" with
"(&end-sizeof (struct foo))"?
-- 
	Geoff Kuenning
	First Systems Corporation
	...!ihnp4!trwrb!desint!geoff