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NNTP-Posting-Date: Sat, 29 Apr 2017 07:34:16 -0500
From: Gareth Owen <gwowen@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: Is this code considered to transgress the signed overflow purism?
References: <11ea6682-cdee-4513-97c2-6c90b585716a@googlegroups.com> <87o9vi6rql.fsf@bsb.me.uk> <26aee5e9-ed2f-4c6e-af68-b85418c7e641@googlegroups.com> <ln1ssdmrc5.fsf@kst-u.example.com> <odtsrt$t90$1@dont-email.me> <lnwpa5l8kh.fsf@kst-u.example.com> <A9HMA.539544$8b6.445860@fx19.am4> <tfIMA.84623$KO2.48643@fx36.iad> <w1JMA.24039$MR.21855@fx35.am4> <10c71913-2871-4474-b05c-804bfdb7074d@googlegroups.com> <oe1vc0$ahh$1@jstuckle.eternal-september.org>
Date: Sat, 29 Apr 2017 13:34:15 +0100
Message-ID: <87vapnfl4o.fsf@gmail.com>
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Xref: csiph.com comp.lang.c:108725

Jerry Stuckle <jstucklex@attglobal.net> writes:

> Too many programmers don't validate input.  NEVER trust input from a
> user.  Verify EVERYTHING.

This should be printed in Bold Capitals in the frontspiece of every
introductory programming book (and most advanced ones too).