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Date: Thu, 28 Oct 2021 17:43:52 +0000
From: Joseph Myers <joseph@codesourcery.com>
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To: "H.J. Lu" <hjl.tools@gmail.com>
CC: GNU C Library <libc-alpha@sourceware.org>, <binutils@sourceware.org>,
 <llvm-dev@lists.llvm.org>, <gcc@gcc.gnu.org>, <gnu-gabi@sourceware.org>
Subject: Re: [PATCH] Add GNU_PROPERTY_1_GLIBC_2_NEEDED
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On Wed, 27 Oct 2021, H.J. Lu via Libc-alpha wrote:

> Linker adds glibc versions in GNU_PROPERTY_1_GLIBC_2_NEEDED to the
> .gnu.version_r section and removes GNU_PROPERTY_1_GLIBC_2_NEEDED note
> when generating shared libraries and executables.

Note that there is no guarantee that a new glibc version actually has any 
symbols in libc at the corresponding symbol version (there are no 
GLIBC_2.20 symbols in any ABI test baseline for any architecture, for 
example).  If it happens not to, will the symbol version exist at all to 
satisfy this check?

-- 
Joseph S. Myers
joseph@codesourcery.com