Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!haven!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: sizeof a struc field
Message-ID: <11110@smoke.BRL.MIL>
Date: 19 Sep 89 21:02:11 GMT
References: <7710@microsoft.UUCP> <11086@smoke.BRL.MIL> <131@dtoa3.dt.navy.mil>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 11

In article <131@dtoa3.dt.navy.mil> stuart@dtix.dt.navy.mil (Stuart Pearlman) writes:
-In article <11086@smoke.BRL.MIL> gwyn@smoke.BRL.MIL (Doug Gwyn) writes:
-:In article <7710@microsoft.UUCP> peterwu@microsoft.UUCP (Peter Wu ) writes:
-:>#define SIZEGHI sizeof(((struct abc *)0)->ghi)
-:No, that doesn't necessarily work.  Review the interminable discussions
-:about use of null pointers.
-What is important is the type of sizeof's argument, and that certainly
-seems well defined.

Is the type of an illegal expression well defined?
Perhaps it's the same as the type of one hand clapping.