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Subject: [Bug libstdc++/114147] [11/12/13 Regression] tuple
 allocator-extended constructor requires non-explicit default constructor
Date: Sat, 16 Mar 2024 10:19:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114147

--- Comment #9 from GCC 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:8a0a24b9a097452c576d5f409fe7efbafd6aef6b

commit r13-8457-g8a0a24b9a097452c576d5f409fe7efbafd6aef6b
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Mar 1 11:16:58 2024 +0000

    libstdc++: Add missing std::tuple constructor [PR114147]

    I caused a regression with commit r10-908 by adding a constraint to the
    non-explicit allocator-extended default constructor, but seemingly
    forgot to add an explicit overload with the corresponding constraint.

    libstdc++-v3/ChangeLog:

            PR libstdc++/114147
            * include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&=
)):
            Add missing overload of allocator-extended default constructor.
            (tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
            * testsuite/20_util/tuple/cons/114147.cc: New test.

    (cherry picked from commit 0a545ac7000501844670add0b3560ebdbcb123c6)=