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From: johnhi@teksce.SCE.TEK.COM (John Higley)
Newsgroups: comp.lang.c
Subject: Re: &&**
Message-ID: <3720@teksce.SCE.TEK.COM>
Date: 27 Sep 90 00:16:22 GMT
References: <1990Sep7.021321.18381@watmath.waterloo.edu> <1990Sep7.080855.24070@irisa.fr> <0926@sheol.UUCP> <oav0Pq600WB6EO2Ilc@andrew.cmu.edu>
Reply-To: johnhi@teksce.SCE.TEK.COM (John Higley)
Organization: Tektronix, Inc., Beaverton,  OR.
Lines: 25

As an experiment, I took the program and fed it to Saber-C.  Using the
browsing tool and a lot of printing, I discovered that each of the &
operators returned an L-value.  Going further, I found that the last one did
not.

Here are the results and a little picture:

addr name contents
    __________
2cf | d  |'d'|
    ----------
2d0 |pd  |2cf|
    ----------
2d4 |ppd |2d0|
    ----------

print &(*(*(ppd)))           --> 2cf
print &(&(*(*(ppd))))        --> 2d0
print &(&(&(*(*(ppd)))))     --> 2d4
print &(&(&(&(*(*(ppd))))))  --> An lvalue (addressable object) is required.

					John Higley
					Tektronix, Inc.
					Component Engineering Group
					johnhi@teksce.SCE.TEK.COM