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-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,85034d1ac78a66eb X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2002-02-22 20:44:21 PST Path: archiver1.google.com!postnews1.google.com!not-for-mail From: byhoe@greenlime.com (Adrian Hoe) Newsgroups: comp.lang.ada Subject: Re: Ada Operating System Date: 22 Feb 2002 20:44:21 -0800 Organization: http://groups.google.com/ Message-ID: <9ff447f2.0202222044.78c44b25@posting.google.com> References: <5Tzc8.111999$H37.15018616@news2-win.server.ntlworld.com> <3C73F480.5010806@mail.com> <9ff447f2.0202220108.7f14c9bc@posting.google.com> NNTP-Posting-Host: 210.186.172.118 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Trace: posting.google.com 1014439461 18562 127.0.0.1 (23 Feb 2002 04:44:21 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: 23 Feb 2002 04:44:21 GMT Xref: archiver1.google.com comp.lang.ada:20284 Date: 2002-02-23T04:44:21+00:00 List-Id: David Starner wrote in message news:... > On 22 Feb 2002 01:08:28 -0800, Adrian Hoe wrote: > > But, if I am correct, GNAT is in Ada. > > GNAT is in Ada and C. The bulk of the frontend is in Ada, and the > backend is in C. OK. My memory was wrong. Sometime ago, I was thrown a question while giving talks in Universities. "What language do they use to build the Ada compiler?" and an (assumed) answer from the audience was "C". Then raised another question: "If Ada has many safety features that C does not have and the Ada compiler was written in C, how exactly safe is Ada?" I know there is ACVC test suite out there to certify Ada compilers before they reach out the market. But then, why still use C to write an Ada compiler? -- Adrian Hoe -- http://greenlime.com/users/adrian.hoe