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Re: [PATCH] libio: use PTR_MANGLE/PTR_DEMANGLE for FILE vtables

From: Kees Cook <kees at outflux dot net>
To: Ulrich Drepper <drepper at gmail dot com>
Cc: libc-alpha <libc-alpha at sourceware dot org>
Date: Thu, 29 Dec 2011 14:00:31 -0800
Subject: Re: [PATCH] libio: use PTR_MANGLE/PTR_DEMANGLE for FILE vtables
References: <20111222235102.GQ12321@outflux.net><CAOPLpQcNA-5WiuxpxLUF1P1r3aoMhpmMdabL8am3E9ZTaUCndw@mail.gmail.com><20111223185132.GS12321@outflux.net><20111227174926.GA12321@outflux.net><CAOPLpQc+-Jo3iY=kqkLdNCUUX=Rpu5Zv3kUzCAsEN1i_Qm=uHQ@mail.gmail.com>

On Thu, Dec 29, 2011 at 04:17:11PM -0500, Ulrich Drepper wrote:
> libg++ and early libstdc++ were sharing the data structure with glibc.

Ah-ha. Is this still the case? How far back was this? How could this be
detected and dealt with?

Thanks!

-Kees

-- 
Kees Cook                                            @outflux.net

References:
- [PATCH] libio: use PTR_MANGLE/PTR_DEMANGLE for FILE vtables
  - From: Kees Cook
- Re: [PATCH] libio: use PTR_MANGLE/PTR_DEMANGLE for FILE vtables
  - From: Ulrich Drepper
- Re: [PATCH] libio: use PTR_MANGLE/PTR_DEMANGLE for FILE vtables
  - From: Kees Cook
- Re: [PATCH] libio: use PTR_MANGLE/PTR_DEMANGLE for FILE vtables
  - From: Kees Cook
- Re: [PATCH] libio: use PTR_MANGLE/PTR_DEMANGLE for FILE vtables
  - From: Ulrich Drepper

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