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Article View: comp.std.c
Article #2940

Re: pointer comparisons

#2940
From: T. William Wells
Date: Thu, 31 Dec 1992 06:48
13 lines
829 bytes
In article <1hsdg8INN5jm@urmel.informatik.rwth-aachen.de> berg@physik.tu-muenchen.de (Stephen R. van den Berg) writes:
:   a=malloc(1); b=malloc(1);
:   i+=a>b; i+=a>=b; i+=a<b; i+=a<=b;
:
: Is this program *always* required to print or return "3"?

No. It may core dump or otherwise behave in undefined ways.
Relationals require that the pointers be into (or at the end of)
the same object.

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Bill                            { rutgers | decwrl | telesci }!twwells!bill
bill@twwells.com
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Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!rutgers!twwells!bill
From: bill@twwells.com (T. William Wells)
Newsgroups: comp.std.c
Subject: Re: pointer comparisons
Message-ID: <C042x5.FAn@twwells.com>
Date: 31 Dec 92 06:48:38 GMT
References: <1hsdg8INN5jm@urmel.informatik.rwth-aachen.de>
Organization: None, Mt. Laurel, NJ
Lines: 13