From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-0.3 required=5.0 tests=BAYES_00, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,3141f12a6a7d0751 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2002-01-10 07:12:20 PST Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!cpk-news-hub1.bbnplanet.com!cambridge1-snf1.gtei.net!news.gtei.net!bos-service1.ext.raytheon.com!bos-service2.ext.raytheon.com.POSTED!not-for-mail Message-ID: <3C3DAF46.F75BBD@spamcop.net> From: Wes Groleau Reply-To: wesgroleau@spamcop.net X-Mailer: Mozilla 4.77 [en] (Windows NT 5.0; U) X-Accept-Language: en,es-MX,es,pt,fr-CA,fr MIME-Version: 1.0 Newsgroups: comp.lang.ada Subject: Re: ANNOUNCE: Ada success story in IEEE Software References: <3c3aea7b$1@pull.gecm.com> <6fD_7.8548$cD4.15360@www.newsranger.com> <3C3CB31E.BC6FDBED@acm.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Thu, 10 Jan 2002 10:12:06 -0500 NNTP-Posting-Host: 151.168.144.162 X-Complaints-To: news@ext.ray.com X-Trace: bos-service2.ext.raytheon.com 1010675539 151.168.144.162 (Thu, 10 Jan 2002 10:12:19 EST) NNTP-Posting-Date: Thu, 10 Jan 2002 10:12:19 EST Organization: Raytheon Company Xref: archiver1.google.com comp.lang.ada:18735 Date: 2002-01-10T10:12:06-05:00 List-Id: Pat Rogers wrote: > In a study described in a paper published in 1986, Herbert and Myron Hecht found > that for each million lines of code, 20,000 bugs existed. Normally 90% would be > found by testing. Another 200 would be found during the first year of operation > by users, leaving 18,000 undetected bugs. Regular maintenance would fix 200 > bugs, but also introduce 200 new ones. This confuses me. Typos? Are the 90% found in testing not fixed? How are 18,000 of them still undetected a year after release. And how can any study detect 18,000 bugs that neither the testers nor the users can detect? -- Wes Groleau http://freepages.rootsweb.com/~wgroleau