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=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD, FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4 X-Received: by 2002:a6b:a112:: with SMTP id k18-v6mr2629636ioe.138.1529779641399; Sat, 23 Jun 2018 11:47:21 -0700 (PDT) X-Received: by 2002:aca:d60f:: with SMTP id n15-v6mr462126oig.6.1529779641182; Sat, 23 Jun 2018 11:47:21 -0700 (PDT) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!feeder4.usenet.farm!feed.usenet.farm!weretis.net!feeder6.news.weretis.net!feeder.usenetexpress.com!feeder-in1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!u78-v6no2024823itb.0!news-out.google.com!z3-v6ni2425iti.0!nntp.google.com!d7-v6no2038151itj.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Sat, 23 Jun 2018 11:47:20 -0700 (PDT) In-Reply-To: <59ea4fa7-f1e7-41c8-b386-c76cf7f6d788@googlegroups.com> Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=76.113.16.86; posting-account=lJ3JNwoAAAAQfH3VV9vttJLkThaxtTfC NNTP-Posting-Host: 76.113.16.86 References: <584564c2-9f64-4965-b045-535cdaf899c0@googlegroups.com> <7cb22c58-3009-47f0-8fe7-62f3cd61785d@googlegroups.com> <2d617160-ac33-40e6-a06a-97cc0b53062d@googlegroups.com> <6f103699-811e-45e2-83ee-3b3606239cd8@googlegroups.com> <59ea4fa7-f1e7-41c8-b386-c76cf7f6d788@googlegroups.com> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <35485cb1-7411-4843-a0b5-b87d79b9a93f@googlegroups.com> Subject: Re: Why are Ada compilers difficult to write ? From: Shark8 Injection-Date: Sat, 23 Jun 2018 18:47:21 +0000 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Xref: reader02.eternal-september.org comp.lang.ada:53272 Date: 2018-06-23T11:47:20-07:00 List-Id: On Saturday, June 23, 2018 at 12:12:37 PM UTC-6, Dan'l Miller wrote: > On Saturday, June 23, 2018 at 11:14:53 AM UTC-5, Shark8 wrote: > >=20 > > SPARK is better than Rust in terms of safety/reliability; there was a [= possible] proposed extension to > > SPARK to allow access-types in certain, controlled conditions that was = shown to the ARG. (They asked > > that we not promulgate it, I think because they wanted to publish/prese= nt it for their academic career.) >=20 > Don't say any more. It might have been embargoed for a patent applicatio= n not yet submitted. I wasn't going to; just saying that there are efforts to bring safe, provab= le access-types into SPARK. (And, actually, I'm certain there's several pub= licly available papers on the general topic; I've come across a few... prob= ably here: http://spark-2014.org/ )