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From: nagel@ics.uci.edu (Mark Nagel)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Arrays of functions in THINK C
Keywords: Why does this not work?
Message-ID: <924@orion.cf.uci.edu>
Date: 3 Aug 88 06:04:37 GMT
References: <2884@mit-amt.MEDIA.MIT.EDU> <9651@dartvax.Dartmouth.EDU>
Sender: news@orion.cf.uci.edu
Reply-To: nagel@ics.uci.edu (Mark Nagel)
Organization: University of California, Irvine - Dept. of ICS
Lines: 23

In article <9651@dartvax.Dartmouth.EDU> earleh@eleazar.dartmouth.edu (Earle R. Horton) writes:
|In article <2884@mit-amt.MEDIA.MIT.EDU> phil@mit-amt.MEDIA.MIT.EDU (Phil Sohn) writes:
[ stuff about how gensub[x]() doesn't work in LSC ]
|
|Try
|
|(* gensub[1])();
|
|I don't think it's a bug in Think.  I think Think is handling the
|situation properly.  In the first form, you are attempting to call a
|pointer to a function.  In the second form, you are calling the
|function referenced by the pointer.  The reason the first form works
|on "Vaxes, HPs, Suns, and in MPW" is rather obvious:  "What else could
|I possibly mean here?"  K&R doesn't say anything about it.  Anybody
|care to eleaborate about what ANSI says?

I'm relatively sure that ANSI says that if fp is a function pointer then
both (*fp)() and fp() are equivalent.

--
Mark D. Nagel
Department of Information and Computer Science, UC Irvine
nagel@ics.uci.edu             (ARPA)             When they ship styrofoam...
{sdcsvax|ucbvax}!ucivax!nagel (UUCP)             ...what do they pack it in?