From: Mario Blunk <mario.blunk.gplus@gmail.com>
Subject: Re: strange cursor in nested containers
Date: Tue, 25 Apr 2023 00:30:37 -0700 (PDT) [thread overview]
Message-ID: <9a1c3ba5-d5ae-41d3-9eab-2b8cd941bc66n@googlegroups.com> (raw)
In-Reply-To: <u2199a$3cm0v$1@dont-email.me>
> > How could I solve the problem ? Not using "rename" ? Using an aliased access type as John Barnes suggests in Ada2005 on page 275 ?
> You have to avoid calling Element. Since you have a cursor, you can call
> Query_Element, which should pass the actual element to the procedure you supply.
Right, that solves the problem. For those interested please find a comparison here:
1. The demo with a dangling (dangerous) cursor:
https://github.com/Blunk-electronic/ada_training/blob/master/src/containers/demo/nested/nest_1.adb
And the demo with the issue solved properly:
https://github.com/Blunk-electronic/ada_training/blob/master/src/containers/demo/nested/nest_2.adb
Still the question remains, why such a dangling cursor is not detected at runtime.
next prev parent reply other threads:[~2023-04-25 7:30 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-19 7:09 strange cursor in nested containers Mario Blunk
2023-04-19 15:07 ` Simon Wright
2023-04-20 5:15 ` Egil H H
2023-04-20 5:33 ` Egil H H
2023-04-20 14:59 ` Simon Wright
2023-04-20 15:28 ` Mario Blunk
2023-04-22 9:33 ` Randy Brukardt
2023-04-22 17:04 ` Mario Blunk
2023-04-22 18:33 ` Jeffrey R.Carter
2023-04-25 7:30 ` Mario Blunk [this message]
2023-05-09 3:56 ` Randy Brukardt
2023-05-09 8:36 ` Jeffrey R.Carter
2023-05-09 8:49 ` Dmitry A. Kazakov
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