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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/111050] [11/12/13/14 Regression] ABI break in
 _Hash_node_value_base since GCC 11
Date: Mon, 02 Oct 2023 20:47:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111050

--- Comment #14 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Francois Dumont
<fdumont@gcc.gnu.org>:

https://gcc.gnu.org/g:1be57348229666c54954f1e5937cae00e113f7f1

commit r12-9903-g1be57348229666c54954f1e5937cae00e113f7f1
Author: Tim Song <t.canens.cpp@gmail.com>
Date:   Wed Sep 6 19:31:55 2023 +0200

    libstdc++: Force _Hash_node_value_base methods inline to fix abi (PR111=
050)

=20=20=20
https://gcc.gnu.org/git/?p=3Dgcc.git;a=3Dcommit;h=3D1b6f0476837205932613ddb=
2b3429a55c26c409d
    changed _Hash_node_value_base to no longer derive from _Hash_node_base,
which means
    that its member functions expect _M_storage to be at a different offset=
. So
explosions
    result if an out-of-line definition is emitted for any of the member
functions (say,
    in a non-optimized build) and the resulting object file is then linked =
with
code built
    using older version of GCC/libstdc++.

    libstdc++-v3/ChangeLog:

            PR libstdc++/111050
            * include/bits/hashtable_policy.h
            (_Hash_node_value_base<>::_M_valptr(),
_Hash_node_value_base<>::_M_v())
            Add [[__gnu__::__always_inline__]].

    (cherry picked from commit 2c1e3544a94c5d7354fad031e1f9731c3ce3af25)=