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 10.36.144.196 with SMTP id x187mr3478703itd.6.1521139939911; Thu, 15 Mar 2018 11:52:19 -0700 (PDT) X-Received: by 10.157.95.23 with SMTP id f23mr492153oti.12.1521139939809; Thu, 15 Mar 2018 11:52:19 -0700 (PDT) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!paganini.bofh.team!weretis.net!feeder6.news.weretis.net!feeder.usenetexpress.com!feeder-in1.iad1.usenetexpress.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!e10-v6no18687itf.0!news-out.google.com!a25-v6ni24itj.0!nntp.google.com!r195-v6no17715itc.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Thu, 15 Mar 2018 11:52:19 -0700 (PDT) In-Reply-To: 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: User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <2e250363-97a3-45bd-948e-081e24d70655@googlegroups.com> Subject: Re: GNAT corrupted builds with below second changes From: Shark8 Injection-Date: Thu, 15 Mar 2018 18:52:19 +0000 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Xref: reader02.eternal-september.org comp.lang.ada:51004 Date: 2018-03-15T11:52:19-07:00 List-Id: On Wednesday, March 14, 2018 at 4:36:34 AM UTC-6, Alejandro R. Mosteo wrote= : >=20 > I will guess here that the timestamp being used has=20 > second precision. This leads to supposedly up-to-date builds that=20 > aren't, among other funny effects. This is one reason I advocate a DB-based solution rather than an FS-based s= olution; after all, the FS solution *IS* simply using the FS as an ad-hoc a= nd anemic database, and using the timestamp-field this way is essentially a= nalogous to querying a 'time' column when what we *REALLY* want is a 'versi= on' column (not "1.2.3" but more like "build # X"). A lot of problems with build-systems come from (a) using the FS as an ad-ho= c DB, and (b) the differences in the FS like "/ vs \ vs :" directory separa= tors, or case-insensitive vs case-sensitive.