sizeof a struc field

[Wm E Davidsen Jr]

In article <2488 at munnari.oz.au>, ok at cs.mu.oz.au (Richard O'Keefe) writes:

|  I'm sure I'll be corrected if I'm wrong, but isn't the actual restriction
|  that the argument of "sizeof" must be an L-value in ANSI C?  If I'm right
|  about that, then the problem is not that sizeof ((struct foo*)NULL)->field
|  may "blow up", but that ((struct foo*)NULL)->field is not an L-value.

  The standard says that you may take the sizeof an array, so the
expression most definitely does not have to be an lvalue. You can also
take sizeof something const.
-- 
bill davidsen	(davidsen at crdos1.crd.GE.COM -or- uunet!crdgw1!crdos1!davidsen)
"The world is filled with fools. They blindly follow their so-called
'reason' in the face of the church and common sense. Any fool can see
that the world is flat!" - anon