From: "A. Wilcox" <awilfox@adelielinux.org>
To: musl@lists.openwall.com
Subject: Re: [musl] friendly errors for ABI mismatch
Date: Mon, 27 Jul 2020 15:54:00 -0500 [thread overview]
Message-ID: <544a3726-007c-69e5-74ba-39f28c8f35db@adelielinux.org> (raw)
In-Reply-To: <20200727160326.GN6949@brightrain.aerifal.cx>
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On 27/07/2020 11:03, Rich Felker wrote:
> There is no way to give a more high-level reason for the runtime link
> failure like "your program needs time64 and you're running with an old
> musl" because the code reporting the error *is the old musl* that's
> not aware of whatever it is that the new binary is missing. Maybe you
> have something else in mind that I don't fully understand, but
> whatever it is it would only address future missing symbol errors, not
> the ones you're seeing right now.
I think the request here is to have a "minimum musl version" encoded in
the binary, so that the error would say "Sorry, this binary requires a
newer musl version than you have."
This is similar to the Win32 SUBSYSTEM property in PE. "The specified
program requires a newer version of Windows."
The problem is that this would lead to the same issue that prevents musl
from defining a compiler macro with its number (#define __MUSL__
0x010201 or such) - those that backport patches and/or features to older
versions would necessarily be reporting a version number that is older
than the patch/feature.
Therefore, I don't see this working out for musl for the same reason.
The bug here is trying to run musl 1.2 programs on musl 1.1 at all; this
shouldn't even be possible. I've certainly never hit this, even while
upgrading Adélie beta4 systems to RC1 on 32-bit computers.
Best,
--arw
--
A. Wilcox (awilfox)
Project Lead, Adélie Linux
https://www.adelielinux.org
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next prev parent reply other threads:[~2020-07-27 20:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-27 15:27 Ariadne Conill
2020-07-27 16:03 ` Rich Felker
2020-07-27 20:54 ` A. Wilcox [this message]
2020-07-27 20:57 ` Ariadne Conill
2020-07-27 21:50 ` Rich Felker
2020-07-28 8:40 ` Florian Weimer
2020-07-29 1:16 ` Rich Felker
2020-07-27 21:16 ` Florian Weimer
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