From: Ian Lance Taylor <ian@zembu.com>
To: hjl@lucon.org
Cc: drepper@cygnus.com, binutils@sourceware.cygnus.com
Subject: Re: A glibc dynamic linker or gld bug?
Date: Wed, 07 Jul 1999 08:03:00 -0000 [thread overview]
Message-ID: <19990707150231.29891.qmail@daffy.airs.com> (raw)
In-Reply-To: <19990707145750.ACAA157BA@ocean.lucon.org>
Date: Wed, 7 Jul 1999 07:57:50 -0700 (PDT)
From: hjl@lucon.org (H.J. Lu)
> By "problem", I mean the same symbol will have different values in
> executable and DSO. When you update one of them, you won't see the
> change in the other. If you relink executable against the new DSO,
> the symbol in executable will override the one in DSO.
>
> I guess I don't understand. The DSO should have relocations for all
> uses of the symbol, so it will wind up seeing the definition in the
> executable. At runtime the symbol will not have different values.
> This is an ordinary case in which the executable overrides the DSO.
Here is the testcase.
I see what you mean. You're right, to make this work you need to use
the --export-dynamic option when you link the executable. That is the
default on Solaris, perhaps for this very reason. What a pain.
Ian
next prev parent reply other threads:[~1999-07-07 8:03 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-07-04 13:52 H.J. Lu
1999-07-05 2:38 ` Geoff Keating
1999-07-05 7:41 ` Jason Gunthorpe
1999-07-05 20:48 ` Richard Henderson
1999-07-06 1:01 ` Geoff Keating
1999-07-06 12:16 ` Geoff Keating
1999-07-06 19:11 ` Ian Lance Taylor
1999-07-06 19:28 ` Richard Henderson
1999-07-06 19:31 ` Ian Lance Taylor
1999-07-06 21:45 ` H.J. Lu
1999-07-07 7:36 ` Ian Lance Taylor
1999-07-07 7:39 ` H.J. Lu
1999-07-07 7:44 ` Ian Lance Taylor
1999-07-07 7:57 ` H.J. Lu
1999-07-07 8:03 ` Ian Lance Taylor [this message]
1999-07-07 20:12 ` Geoff Keating
1999-07-07 20:16 ` Ian Lance Taylor
1999-07-07 1:33 ` Geoff Keating
1999-07-07 7:35 ` Ian Lance Taylor
1999-07-07 11:22 ` Ian Lance Taylor
1999-07-07 20:13 ` Geoff Keating
1999-07-07 20:28 ` Ian Lance Taylor
1999-07-08 17:29 ` Geoff Keating
1999-07-09 6:11 ` Franz Sirl
1999-07-10 3:14 ` Geoff Keating
1999-07-10 5:40 ` Ian Lance Taylor
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