From: Andrew Cagney <ac131313@cygnus.com>
To: Nick Duffek <nsd@redhat.com>
Cc: gdb@sources.redhat.com, insight@sources.redhat.com
Subject: Re: Register group proposal
Date: Thu, 22 Feb 2001 07:58:00 -0000 [thread overview]
Message-ID: <3A95369F.98027202@cygnus.com> (raw)
In-Reply-To: <200102221326.f1MDQJc02778@rtl.cygnus.com>
Nick Duffek wrote:
>
> On 21-Feb-2001, Andrew Cagney wrote:
>
> >Rather than a simple integer, should reggroup be made an object vis
> >``struct reggroup *''?
>
> Perhaps so. It's not a struct at the moment, though, and even if it were,
> declaring it as such implies that clients of the interface have access to
> fields of the struct, which either (a) is untrue or (b) leaks internal
> information across the interface.
>
> I'd rather typedef it to something that'll cause compile-time errors if
> it's used as anything other than an opaque handle. That change probably
> would require more discussion, so for now I'd prefer to use an int.
I'm sorry but you've lost me here.
Have a look at ui-out.h, ui-file.h, gdbarch.h, ... They have all used
``struct foo *'' to implement an opaque type. In all cases it isn't
possible to get to the inner workings.
Regarding typedefs. Per my e-mail
http://sources.redhat.com/ml/gdb-patches/2001-02/msg00325.html it
encouraging a tangled web of includes.
enjoy,
Andrew
next prev parent reply other threads:[~2001-02-22 7:58 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-20 20:56 Nick Duffek
2001-02-21 6:44 ` Fernando Nasser
2001-02-21 7:10 ` Nick Duffek
2001-02-21 7:36 ` Fernando Nasser
2001-02-21 7:58 ` Keith Seitz
2001-02-21 8:50 ` Andrew Cagney
2001-02-21 11:43 ` Andrew Cagney
2001-02-25 15:36 ` Nick Duffek
2001-02-21 11:43 ` Andrew Cagney
2001-02-21 12:28 ` Andrew Cagney
2001-02-21 12:18 ` Andrew Cagney
2001-02-22 0:59 ` Eli Zaretskii
2001-02-22 4:29 ` Nick Duffek
2001-02-22 8:46 ` Andrew Cagney
2001-02-22 8:56 ` Keith Seitz
2001-02-22 9:20 ` Andrew Cagney
2001-02-22 5:17 ` Nick Duffek
2001-02-22 6:36 ` Fernando Nasser
2001-02-22 8:23 ` Andrew Cagney
2001-02-22 7:58 ` Andrew Cagney [this message]
2001-02-22 8:37 ` Nick Duffek
2001-02-22 9:12 ` Andrew Cagney
2001-02-22 10:15 ` Nick Duffek
2001-02-22 10:25 ` Andrew Cagney
2001-02-22 11:40 ` Eli Zaretskii
2001-02-22 11:02 ` Kevin Buettner
2001-02-22 12:08 ` Andrew Cagney
2001-02-22 8:16 ` Andrew Cagney
2001-02-21 3:00 Stephane Carrez
2001-02-21 7:00 ` Nick Duffek
2001-02-21 9:34 ` Andrew Cagney
2001-02-22 9:19 Michael Elizabeth Chastain
2001-02-23 2:52 Bernard Dautrevaux
2001-02-24 15:43 ` Nick Duffek
2001-02-26 18:21 ` Andrew Cagney
2001-02-27 10:30 ` Jim Kleck
2001-02-27 11:24 ` Per Bothner
2001-02-27 13:44 ` Jim Kleck
2001-02-27 15:17 ` Andrew Cagney
2001-02-26 5:29 Bernard Dautrevaux
2001-02-26 9:28 ` Christopher Faylor
2001-02-26 10:56 ` Andrew Cagney
2001-02-26 11:28 ` Christopher Faylor
2001-02-26 17:02 ` Andrew Cagney
2001-02-27 8:53 ` Christopher Faylor
2001-02-27 9:57 ` Andrew Cagney
2001-02-28 1:59 Bernard Dautrevaux
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