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 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: 103376,80bc3e0698be468f X-Google-Attributes: gid103376,public X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news3.google.com!newsfeed2.dallas1.level3.net!news.level3.com!newsfeed-00.mathworks.com!kanaga.switch.ch!switch.ch!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!texta.sil.at!newsfeed.inode.at!news.hispeed.ch!linux2.krischik.com!news From: Martin Krischik Newsgroups: comp.lang.ada Subject: Re: Type safety on wikipedia Date: Fri, 27 Jan 2006 20:04:12 +0100 Organization: Cablecom Newsserver Message-ID: <17514424.vPDbTzKvie@linux1.krischik.com> References: <1138260496.230283.147640@g43g2000cwa.googlegroups.com> <1138363035.664717.262330@g47g2000cwa.googlegroups.com> NNTP-Posting-Host: 84-74-134-212.dclient.hispeed.ch Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit X-Trace: news.hispeed.ch 1138389303 30509 84.74.134.212 (27 Jan 2006 19:15:03 GMT) X-Complaints-To: news@hispeed.ch NNTP-Posting-Date: Fri, 27 Jan 2006 19:15:03 +0000 (UTC) User-Agent: KNode/0.10 Xref: g2news1.google.com comp.lang.ada:2685 Date: 2006-01-27T20:04:12+01:00 List-Id: Larry Kilgallen wrote: > In article <1138363035.664717.262330@g47g2000cwa.googlegroups.com>, > "Martin Krischik" writes: > >> You can manualy free memory - provided all pointers pointing to the >> freed memory are set to null at the same time. And access to a null >> pointer is handled in orderly manner. > > If a program is correct, having the pointers become null is not an issue. > Referencing through a null pointer or a stale pointer is equally wrong. Not of access of a null pointer raises an exceptions. Exceptions are considered well defined. See the talk page. Martin -- mailto://krischik@users.sourceforge.net Ada programming at: http://ada.krischik.com