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=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=unavailable autolearn_force=no version=3.4.4 X-Received: by 10.236.22.231 with SMTP id t67mr4435454yht.19.1421999114805; Thu, 22 Jan 2015 23:45:14 -0800 (PST) X-Received: by 10.140.95.67 with SMTP id h61mr6999qge.9.1421999114746; Thu, 22 Jan 2015 23:45:14 -0800 (PST) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!feeder.eternal-september.org!news.glorb.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!bm13no2422001qab.0!news-out.google.com!q4ni1qan.0!nntp.google.com!v8no2939744qal.1!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Thu, 22 Jan 2015 23:45:14 -0800 (PST) In-Reply-To: <713608f7-d46e-4b73-a34e-552d1b978d2c@googlegroups.com> Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=193.71.180.114; posting-account=uulyKwoAAAA86DO0ODu--rZtbje8Sytn NNTP-Posting-Host: 193.71.180.114 References: <713608f7-d46e-4b73-a34e-552d1b978d2c@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <01fc779f-e274-4515-a88f-144d515d323f@googlegroups.com> Subject: Re: Strange error From: Egil H H Injection-Date: Fri, 23 Jan 2015 07:45:14 +0000 Content-Type: text/plain; charset=ISO-8859-1 Xref: news.eternal-september.org comp.lang.ada:24711 Date: 2015-01-22T23:45:14-08:00 List-Id: On Thursday, January 22, 2015 at 10:46:10 PM UTC+1, Laurent wrote: > > The version to test it with integers doesn't. > Stops after 2 elements even if there are more in the list. Display and Reverse_Display seems to work as expected. Your error is in case (4) of Insert_In_Order. You modify Temp.all.Next and Previous.all.Next But not Current.all.Previous and Temp.all.Previous. So reverse iterating the list (which depends on Previous being set) will skip all elements inserted between Head and Tail. -- ~egilhh