From: "G.B." <bauhaus@notmyhomepage.invalid>
Subject: Re: A function that cannot be called?
Date: Tue, 23 Oct 2018 13:45:25 +0200
Date: 2018-10-23T13:45:25+02:00 [thread overview]
Message-ID: <pqn1km$28q$1@dont-email.me> (raw)
In-Reply-To: <104caa52-8e0b-4699-996e-74f382c31ba7@googlegroups.com>
On 21.10.18 13:30, Egil H H wrote:
> package What is
> pragma Assertion_Policy(Check);
>
> type Void is private with Type_Invariant => False;
>
> function Impossible return Void with Pre => False;
>
> private
>
> type Void is null record;
>
> end What;
This approach maybe illustrates a point best: in which way
does Ada's type system support detecting errors in a program
early? Or is is SPARK's type system? Compile time will be best.
It is tricky to explore empirically, though, since by experiments
I have got two different bug boxes so far. On this account, I'm
not sure if I can take 'Access of a function because seemingly
doing so triggers testing theprecondition...
next prev parent reply other threads:[~2018-10-23 11:45 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-18 12:14 A function that cannot be called? G.B.
2018-10-18 15:33 ` Stefan.Lucks
2018-10-18 20:21 ` G.B.
2018-10-18 20:57 ` Niklas Holsti
2018-10-19 7:15 ` Dmitry A. Kazakov
2018-10-19 13:55 ` G.B.
2018-10-19 15:31 ` Dmitry A. Kazakov
2018-10-18 17:03 ` AdaMagica
2018-10-18 19:36 ` G.B.
2018-10-18 21:30 ` Randy Brukardt
2018-10-19 14:00 ` G.B.
2018-10-19 15:39 ` Dmitry A. Kazakov
2018-10-20 1:34 ` Randy Brukardt
2018-10-20 9:14 ` G.B.
2018-10-20 11:13 ` Simon Wright
2018-10-20 14:11 ` Dmitry A. Kazakov
2018-10-21 9:25 ` G.B.
2018-10-21 9:07 ` G.B.
2018-10-21 9:51 ` Dmitry A. Kazakov
2018-10-21 10:57 ` Niklas Holsti
2018-10-21 18:00 ` Simon Wright
2018-10-19 8:48 ` AdaMagica
2018-10-19 11:15 ` G.B.
2018-10-19 17:06 ` AdaMagica
2018-10-19 19:57 ` G.B.
2018-10-19 22:06 ` Jere
2018-10-21 10:14 ` G.B.
2018-10-21 11:30 ` Egil H H
2018-10-23 11:45 ` G.B. [this message]
2018-10-23 14:35 ` Jere
2018-10-23 14:57 ` Dmitry A. Kazakov
2018-10-23 17:49 ` G.B.
2018-10-23 19:25 ` Dmitry A. Kazakov
2018-10-24 7:35 ` G.B.
2018-10-24 8:14 ` Dmitry A. Kazakov
2018-10-19 18:19 ` marciant
2018-10-19 18:22 ` marciant
2018-10-20 1:36 ` Randy Brukardt
2018-10-20 2:54 ` marciant
2018-10-19 20:25 ` Shark8
2018-10-19 23:28 ` marciant
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox