From: Rob Landley <rob@landley.net>
To: Gwenole Beauchesne <gbeauchesne@mandriva.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: strange crash on FreeBSD-current/amd64 (pointertruncation?)
Date: Fri, 9 Feb 2007 17:31:29 -0500 [thread overview]
Message-ID: <200702091731.29849.rob@landley.net> (raw)
In-Reply-To: <Pine.LNX.4.58.0702090749110.2883@gauss.mandriva.com>
On Friday 09 February 2007 2:06 am, Gwenole Beauchesne wrote:
> In particular, and likely not limited to, a reasonnable C++ ABI
I don't do C++, but Garrett the uClibc++ maintainer used to be at the desk
next to mine. He would find this statment hilarious.
Among other things, any _sane_ C++ ABI will deal with nested classes and
namespaces by listing the innermost one first, so that when you have:
parent1.parent2.parent3.child.member
parent1.parent2.parent3.child.walrus
parent1.parent2.parent3.child.thingy
You don't strcmp your way through 80 bytes of guaranteed-to-be-identical data
every time you want to do linking or RTTI or anything that needs to find a
symbol. This is just one random example of how the people who were doing
this weren't THINKING.
I'll stop now.
Rob
--
"Perfection is reached, not when there is no longer anything to add, but
when there is no longer anything to take away." - Antoine de Saint-Exupery
prev parent reply other threads:[~2007-02-09 22:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-02 12:25 [Qemu-devel] Re: strange crash on FreeBSD-current/amd64 (pointertruncation?) Paul Robinson
2007-02-02 17:34 ` Gwenole Beauchesne
2007-02-02 19:03 ` Gwenole Beauchesne
2007-02-08 13:09 ` Rob Landley
2007-02-08 16:09 ` Paul Brook
2007-02-09 7:06 ` Gwenole Beauchesne
2007-02-09 22:31 ` Rob Landley [this message]
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