From: Andreas Schwab <schwab@linux-m68k.org>
To: "H.J. Lu via Libc-alpha" <libc-alpha@sourceware.org>
Subject: Re: [PATCH 2/2] ld.so: Hide _r_debug to support DT_DEBUG [BZ #28130]
Date: Mon, 02 Aug 2021 15:29:27 +0200 [thread overview]
Message-ID: <87h7g8ug94.fsf@igel.home> (raw)
In-Reply-To: <20210802042940.932692-2-hjl.tools@gmail.com> (H. J. Lu via Libc-alpha's message of "Sun, 1 Aug 2021 21:29:40 -0700")
On Aug 01 2021, H.J. Lu via Libc-alpha wrote:
> 1. Add a function, __r_debug_location, which returns the address of
> _r_debug:
>
> /* Return the address of that structure used by the dynamic linker. */
> extern struct r_debug * __r_debug_location (void) __attribute_const__;
>
> It has a special glibc version, GLIBC_DEBUG.
>
> 2. Hide _r_debug in ld.so by defining _r_debug with __r_debug_location:
>
> #define _r_debug (*__r_debug_location ())
There is no need for that. Nobody should be using _r_debug.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
next prev parent reply other threads:[~2021-08-02 13:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-02 4:29 [PATCH 1/2] Map ABI/VERSION of rtld to ABI/VERSION of ld [BZ #28132] H.J. Lu
2021-08-02 4:29 ` [PATCH 2/2] ld.so: Hide _r_debug to support DT_DEBUG [BZ #28130] H.J. Lu
2021-08-02 13:29 ` Andreas Schwab [this message]
2021-08-02 20:43 ` H.J. Lu
2021-08-02 21:19 ` Florian Weimer
2021-08-02 21:46 ` H.J. Lu
2021-08-02 23:06 ` H.J. Lu
2022-10-06 16:38 ` [PATCH 1/2] Map ABI/VERSION of rtld to ABI/VERSION of ld [BZ #28132] Carlos O'Donell
2022-10-06 18:46 ` H.J. Lu
2022-10-06 19:52 ` H.J. Lu
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