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From: "rs2740 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/111050] New: [11/12/13/14 Regression] ABI break in
 _Hash_node_value_base since GCC 11
Date: Thu, 17 Aug 2023 14:40:10 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: libstdc++
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ABI
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X-Bugzilla-Who: rs2740 at gmail dot com
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111050

            Bug ID: 111050
           Summary: [11/12/13/14 Regression] ABI break in
                    _Hash_node_value_base since GCC 11
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ABI
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rs2740 at gmail dot com
  Target Milestone: ---

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, whi=
ch
means that its member functions expect _M_storage to be at a different offs=
et.
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 f=
ile
is then linked with code built using older version of GCC/libstdc++.=