From -1305285238780428513 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 1149ec,c0f8f764e8b7d30f X-Google-Attributes: gid1149ec,public X-Google-Thread: f78e5,c0f8f764e8b7d30f X-Google-Attributes: gidf78e5,public X-Google-ArrivalTime: 1992-12-23 21:37:08 PST Xref: sparky comp.std.c++:1912 comp.std.c:3265 Newsgroups: comp.std.c++,comp.std.c Path: sparky!uunet!elroy.jpl.nasa.gov!decwrl!deccrl!news.crl.dec.com!rdg.dec.com!uvo.dec.com!e2big.mko.dec.com!jrdzzz.jrd.dec.com!jit533.jit.dec.com!diamond From: diamond@jit533.jit.dec.com (Norman Diamond) Subject: Re: Question about sizeof in C/C++. Message-ID: Sender: usenet@jrd.dec.com (USENET News System) Nntp-Posting-Host: jit533.jit.dec.com Reply-To: diamond@jit.dec.com (Norman Diamond) Organization: Digital Equipment Corporation Japan , Tokyo References: <1992Dec18.021610.24482@nntpd.lkg.dec.com> Date: Thu, 24 Dec 1992 02:06:45 GMT Lines: 29 In article amf@amfent.Gwinnett.COM (Andy Feibus) writes: >diamond@jit345.bad.jit.dec.com (Norman Diamond) writes: >>In article amf@amfent.Gwinnett.COM (Andy F >>>jamesc@swapsdev.state.state.COM.AU (James Cribb) writes: >>>>do the C or C++ standards guarantee that &ps[k] == [...] >>>the answer is... no. >>He was asking about the standards [...] the answer is... yes. >he also asked: >>>>is it portable? >And that was the question I answered. >>>Different compilers see &ps[k] differently; use parentheses to clarify: >>> &(ps[k]). >>Even K&R-1 and Stroustrop-1 prohibited seeing this expression differently. >That's nice in theory, but I've found at least one UNIX-based compiler >that interprets it differently. Since his question was about portability, OK, you found at least one UNIX-based compiler for a non-C language. I've found various compilers with various bugs too. If you assert that portability means porting to broken compilers, then there is no such thing as a portable program. Zero. Zilch. I think the original poster was asking about portability among standard conforming implementations. In fact, even among pre-standard implementations of the C and C++ languages, portability was there. -- Norman Diamond diamond@jit081.enet.dec.com If this were the company's opinion, I wouldn't be allowed to post it. "It's been a lovely recession."