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!news2.google.com!news4.google.com!news.glorb.com!wn14feed!worldnet.att.net!204.71.34.3!newsfeed.cwix.com!news.binc.net!kilgallen From: Kilgallen@SpamCop.net (Larry Kilgallen) Newsgroups: comp.lang.ada Subject: Re: Type safety on wikipedia Date: 27 Jan 2006 16:06:10 -0600 Organization: LJK Software Message-ID: <3yNinNxmEyJb@eisner.encompasserve.org> References: <1138260496.230283.147640@g43g2000cwa.googlegroups.com> <1138363035.664717.262330@g47g2000cwa.googlegroups.com> <17514424.vPDbTzKvie@linux1.krischik.com> NNTP-Posting-Host: eisner.encompasserve.org X-Trace: grandcanyon.binc.net 1138399485 31190 192.135.80.34 (27 Jan 2006 22:04:45 GMT) X-Complaints-To: abuse@binc.net NNTP-Posting-Date: Fri, 27 Jan 2006 22:04:45 +0000 (UTC) Xref: g2news1.google.com comp.lang.ada:2689 Date: 2006-01-27T16:06:10-06:00 List-Id: In article <17514424.vPDbTzKvie@linux1.krischik.com>, Martin Krischik writes: > 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. I gather you are trying to say some people plan to have their programs access via a null pointer and then handle an exception. That seems incredibly sloppy. It is also likely to be quite inefficient on some Ada implementations. I have no idea what you mean by "the talk page".