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Subject: [Bug libstdc++/105417] [11/12/13 Regression] powerpc64le-linux
 abilist changes based on --with-long-double-format=
Date: Fri, 29 Apr 2022 13:41:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105417

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:

https://gcc.gnu.org/g:bb7cf39b05a216431a431499d0c36a6034f6acc4

commit r13-45-gbb7cf39b05a216431a431499d0c36a6034f6acc4
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Apr 29 12:17:13 2022 +0100

    libstdc++: Add missing exports for ppc64le --with-long-double-format=3D=
ibm
[PR105417]

    The --with-long-double-abi=3Dibm build is missing some exports that are
    present in the --with-long-double-abi=3Dieee build. Those symbols never
    should have been exported at all, but now that they have been, they
    should be exported consistently by both ibm and ieee.

    This simply defines them as aliases for equivalent symbols that are
    already present. The abi-tag on num_get::_M_extract_int isn't really
    needed, because it only uses a std::string as a local variable, not in
    the return type or function parameters, so it's safe to define the
    _M_extract_int[abi:cxx11] symbols as aliases for the corresponding
    function without the abi-tag.

    This causes some new symbols to be added to the GLIBCXX_3.4.29 version
    for the ibm long double build mode, but there is no advantage to adding
    them to 3.4.30 for that build. That would just create more
    inconsistencies.

    libstdc++-v3/ChangeLog:

            PR libstdc++/105417
            * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
            Regenerate.
            * src/c++11/compatibility-ldbl-alt128.cc [_GLIBCXX_USE_DUAL_ABI=
]:
            Define __gnu_ieee128::num_get<C>::_M_extract_int[abi:cxx11]<I>
            symbols as aliases for corresponding symbols without abi-tag.=