From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: gnoga build fails on Mac
Date: Mon, 29 Jun 2020 10:29:22 +0200 [thread overview]
Message-ID: <rdc8p2$u5v$1@dont-email.me> (raw)
In-Reply-To: <rdbe6r$tgl$1@franka.jacob-sparre.dk>
On 6/29/20 2:55 AM, Randy Brukardt wrote:
> "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> wrote in message
> news:rcq55l$r03$1@dont-email.me...
>> On 6/22/20 7:56 AM, Dmitry A. Kazakov wrote:
>>> On 22/06/2020 05:15, Roger wrote:
>>>>
>>>> demo/db_maker/movies.adb
>>>> "equality operator must be declared before type "Movie_Info" is frozen
>>>> (RM 4.5.2 (9.8)) (Ada 2012)"
>>>
>>> That looks like a compiler bug to me.
>>
>> I agree. What happens if you change "=" from an expression function to a
>> regular function?
>
> It is illegal either way. This was an incompatible change in Ada 2012; it
> stems from the fact that "=" of untagged records composes in Ada 2012 but
> not in earlier versions of Ada. Composition cannot be view dependent, and as
> such we cannot allow "late" declarations of operators where some users would
> not see the redefined operator.
The declaration of "=" is the first declaration after the type declaration in a
procedure. How can it be "late"? What users might not see the operator?
--
Jeff Carter
"Brave Sir Robin ran away."
Monty Python and the Holy Grail
59
next prev parent reply other threads:[~2020-06-29 8:29 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-21 7:57 gnoga build fails on Mac Roger
2020-06-21 8:41 ` Dmitry A. Kazakov
2020-06-21 11:18 ` Roger
2020-06-21 13:28 ` Dmitry A. Kazakov
2020-06-22 3:15 ` Roger
2020-06-22 5:56 ` Dmitry A. Kazakov
2020-06-22 6:14 ` Roger
2020-06-22 11:37 ` Jeffrey R. Carter
2020-06-22 23:25 ` Roger
2020-06-23 11:27 ` Jeffrey R. Carter
2020-06-29 0:55 ` Randy Brukardt
2020-06-29 8:29 ` Jeffrey R. Carter [this message]
2020-07-01 1:09 ` Randy Brukardt
2020-07-01 8:52 ` Jeffrey R. Carter
2020-07-03 0:23 ` Randy Brukardt
2020-07-03 9:09 ` Jeffrey R. Carter
2020-07-07 14:41 ` Shark8
2020-07-07 15:37 ` Jeffrey R. Carter
2020-06-21 14:24 ` Jeffrey R. Carter
2020-06-21 16:46 ` Simon Wright
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