From: Stephen Leake <stephen_leake@stephe-leake.org>
Subject: Re: Ada and string literals
Date: Fri, 01 Feb 2013 20:55:06 -0500
Date: 2013-02-01T20:55:06-05:00 [thread overview]
Message-ID: <85d2wj1nut.fsf@stephe-leake.org> (raw)
In-Reply-To: ea721d9c-7f42-4908-9787-ef8b8242428a@googlegroups.com
codeallergy <romainbeckers@gmail.com> writes:
> another question: how free a object from a procedure ?
>
> example:
> procedure Free_Abc (Target : access String)
> is
> begin
> GNAT.Strings.Free(Target); -- error
> end Free_Abc;
>
> this code produce the error: actual for "X" must be a variable
>
> why disallow that ?
Because Free sets its argument to null, which it can't do if it's not a
variable.
Setting the argument to null helps avoid dangling pointers.
--
-- Stephe
next prev parent reply other threads:[~2013-02-02 1:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-30 0:44 Ada and string literals codeallergy
2013-01-30 7:08 ` Niklas Holsti
2013-01-30 11:50 ` Mart van de Wege
2013-01-30 13:52 ` Niklas Holsti
2013-01-30 16:09 ` Adam Beneschan
2013-02-01 0:54 ` Shark8
2013-02-01 9:03 ` Niklas Holsti
2013-02-01 14:58 ` Shark8
2013-01-30 16:52 ` codeallergy
2013-01-30 17:19 ` Adam Beneschan
2013-01-30 20:02 ` Simon Wright
2013-01-30 20:19 ` Georg Bauhaus
2013-01-30 22:06 ` Robert A Duff
2013-01-30 22:10 ` Jeffrey Carter
2013-01-31 2:23 ` Robert A Duff
2013-01-31 15:49 ` Adam Beneschan
2013-01-31 22:24 ` Robert A Duff
2013-02-01 21:16 ` gautier_niouzes
2013-02-02 1:55 ` Stephen Leake [this message]
2013-02-02 14:30 ` Robert A Duff
2013-01-31 9:20 ` ake.ragnar.dahlgren
2013-01-30 16:20 ` Robert A Duff
2013-02-01 13:20 ` Stephen Leake
2013-02-01 14:49 ` Robert A Duff
2013-02-01 17:23 ` Dmitry A. Kazakov
2013-02-01 20:22 ` Robert A Duff
2013-02-01 22:03 ` Dmitry A. Kazakov
2013-01-30 22:54 ` codeallergy
2013-02-01 0:50 ` Shark8
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