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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++/108969] [13/14 Regression] Initializing iostreams in
 the library needs a GLIBCXX_3.4.31 versioned symbol
Date: Tue, 18 Apr 2023 16:31:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108969

--- Comment #19 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:

https://gcc.gnu.org/g:ed933888e680384e1e7af361b20dd484ad424f7d

commit r13-7218-ged933888e680384e1e7af361b20dd484ad424f7d
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Apr 18 17:22:40 2023 +0100

    libstdc++: Fix preprocessor condition in linker script [PR108969]

    The linker script is preprocessed with $(top_builddir)/config.h not the
    include/$target/bits/c++config.h version, which means that configure
    macros do not have the _GLIBCXX_ prefix yet.

    The _GLIBCXX_SYMVER_GNU and _GLIBCXX_SHARED checks are redundant,
    because the gnu.ver file is only used for _GLIBCXX_SYMVER_GNU and the
    linker script is only used for the shared library. Remove those.

    libstdc++-v3/ChangeLog:

            PR libstdc++/108969
            * config/abi/pre/gnu.ver: Fix preprocessor condition.

    (cherry picked from commit 6067ae4557a3a7e5b08359e78a29b8a9d5dfedce)=