Re: gcc and NULL function pointers.

Article View: comp.std.c

Article #3119

#3119

From: Sean Eric Fagan
Date: Mon, 10 Jun 1991 08:19

18 lines
1449 bytes

In article <1991Jun10.073125.25120@tkou02.enet.dec.com> diamond@jit533.enet@tkou02.enet.dec.com (Norman Diamond) writes:
>Yes indeed, the best way to implement a processor for the language does not
>handle the case where a programmer doesn't know how to use the language.
>So what?

ANSI does not require a prototype for non-variardic functions (as far as I
can tell).  As a result, for a certain class of popular machines, under
certain compiler options, defining NULL as 0 will be incorrect, while
'(void*)0' is correct.

And the program that would core-dump on this would be perfectly correct,
according to ANSI.  The header file would, therefore, be wrong.

-- 
Sean Eric Fagan  | "I made the universe, but please don't blame me for it;
sef@kithrup.COM  |  I had a bellyache at the time."
-----------------+           -- The Turtle (Stephen King, _It_)
Any opinions expressed are my own, and generally unpopular with others.

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References: <4641@inews.intel.com> <1991Jun10.061202.25199@kithrup.COM> <1991Jun10.073125.25120@tkou02.enet.dec.com>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!spool.mu.edu!uunet!kithrup!sef
From: sef@kithrup.COM (Sean Eric Fagan)
Newsgroups: comp.std.c
Subject: Re: gcc and NULL function pointers.
Message-ID: <1991Jun10.081924.26439@kithrup.COM>
Date: 10 Jun 91 08:19:24 GMT
Article-I.D.: kithrup.1991Jun10.081924.26439
References: <4641@inews.intel.com> <1991Jun10.061202.25199@kithrup.COM> <1991Jun10.073125.25120@tkou02.enet.dec.com>
Organization: Kithrup Enterprises, Ltd.
Lines: 18

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