Newsgroups: comp.std.c Path: utzoo!henry From: henry@zoo.toronto.edu (Henry Spencer) Subject: Re: Frustrated trying to be portable Message-ID: <1991Mar3.003847.19832@zoo.toronto.edu> Organization: U of Toronto Zoology References: <1991Feb17.203337.20569@uokmax.ecn.uoknor.edu> <15240@smoke.brl.mil> <4188@skye.ed.ac.uk> <1991Feb20.175318.28496@zoo.toronto.edu> <2960@cirrusl.UUCP> Date: Sun, 3 Mar 1991 00:38:47 GMT In article peter@ficc.ferranti.com (Peter da Silva) writes: >In the former case, overlap is a problem but you can compare them for >magnitude. In the latter case, overlap is not a problem. The result of >comparing two pointers into different objects is undefined but when you >don't care about the result why worry? > >(or is this one of those cases where "undefined" means "run nethack"?) "Undefined" *always* means "might run nethack", "might call your boss and report you for incompetence", "might phone an anonymous tip to the FBI that you're running dope to Saddam Hussein", etc. Portable programs must avoid ever encountering such situations. -- "But this *is* the simplified version | Henry Spencer @ U of Toronto Zoology for the general public." -S. Harris | henry@zoo.toronto.edu utzoo!henry