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From: Shark8 <onewingedshark@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: How do I write directly to a memory address?
Date: Sun, 6 Feb 2011 15:08:54 -0800 (PST)
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Date: 2011-02-06T15:08:54-08:00
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On Feb 6, 2:27=A0pm, Maciej Sobczak <see.my.homep...@gmail.com> wrote:
> On Feb 6, 9:01=A0pm, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
> wrote:
>
> > Immutable scalar arguments still ire mutable within C and C++ subprogra=
ms.
>
> Scalar arguments are passed by copy, so whether they are immutable or
> mutable within the function is independent on their origin (and the
> original is not affected by this in any way).
>
> Unless, of course, you have meant something else.
>
> --
> Maciej Sobczak *http://www.inspirel.com

The scalar-argument that is passed when dealing with strings/arrays
[in C & C++]
is that of the address, IIRC. While that address is itself an
"immutable scalar" the
data pointed to is not so constrained and so may be 'mutated' thereby
enabling a
perceived-immutable to be altered. {The newer standards may [or may
not] have
addressed this issue: I seem to recall a "pointer to constant" idea
which would
[I believe] behave in the expected manner if it was passed as the
parameter.}