From: Florian Weimer <fw@deneb.enyo.de>
To: "Maciej W. Rozycki" <macro@mips.com>
Cc: <libc-alpha@sourceware.org>, Alan Modra <amodra@gmail.com>
Subject: Re: [PATCH 2/2] libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307]
Date: Mon, 25 Jun 2018 20:33:00 -0000 [thread overview]
Message-ID: <87sh5a38tz.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: <alpine.DEB.2.00.1806181810570.20622@tp.orcam.me.uk> (Maciej W. Rozycki's message of "Mon, 18 Jun 2018 19:07:50 +0100")
* Maciej W. Rozycki:
> Define a new ABSOLUTE ABI for static linker's use with EI_ABIVERSION
> where correct absolute (SHN_ABS) symbol run-time load semantics is
> required. This way it can be ensured at static link time that a program
> or DSO will not suffer from previous semantics where absolute symbols
> were relocated by the base address, or symbols whose `st_value' is zero
> silently ignored leading to a confusing "undefined symbol" error message
> at load time, and instead "ELF file ABI version invalid" is printed with
> old dynamic loaders, making it clear that there is an ABI version
> incompatibility.
Is this really necessary? It essentially precludes backporting the
fixes.
next prev parent reply other threads:[~2018-06-25 20:33 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-18 18:06 [PATCH 0/2] Accept absolute symbols whose value is zero [BZ #23307] Maciej W. Rozycki
2018-06-18 18:08 ` [PATCH 2/2] libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307] Maciej W. Rozycki
2018-06-25 20:33 ` Florian Weimer [this message]
2018-06-27 22:08 ` Maciej W. Rozycki
2018-06-28 6:59 ` Florian Weimer
2018-06-28 13:49 ` Maciej W. Rozycki
2018-06-28 13:54 ` Florian Weimer
2018-06-28 14:54 ` Maciej W. Rozycki
2018-06-29 16:29 ` Maciej W. Rozycki
2018-07-03 13:53 ` Carlos O'Donell
2018-07-05 15:42 ` [PATCH v2 " Maciej W. Rozycki
2018-07-05 16:29 ` Carlos O'Donell
2018-07-05 17:10 ` Maciej W. Rozycki
2018-07-05 18:02 ` Carlos O'Donell
2018-06-18 18:08 ` [PATCH 1/2] elf: Accept absolute (SHN_ABS) symbols whose value is zero [BZ #23307] Maciej W. Rozycki
2018-06-25 20:25 ` Florian Weimer
2018-06-29 16:13 ` [committed v2 " Maciej W. Rozycki
2018-06-29 17:41 ` Joseph Myers
2018-06-29 18:05 ` Maciej W. Rozycki
2018-06-25 19:14 ` [PING][PATCH 0/2] Accept absolute " Maciej W. Rozycki
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