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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/94520] [10 Regression] <charconv> no longer compiles
 in C++14
Date: Tue, 07 Apr 2020 16:33:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94520

--- Comment #1 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:c104e8f1b67a75ea82c62f1fd2aac69c09127562

commit r10-7601-gc104e8f1b67a75ea82c62f1fd2aac69c09127562
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Tue Apr 7 17:18:21 2020 +0100

    libstdc++: Restore ability to use <charconv> in C++14 (PR 94520)

    This C++17 header is supported in C++14 as a GNU extension, but stopped
    working last year because I made it depend on an internal helper which
    is only defined for C++17 and up.

            PR libstdc++/94520
            * include/std/charconv (__integer_to_chars_result_type)
            (__integer_from_chars_result_type): Use __or_ instead of __or_v=
_ to
            allow use in C++14.
            * testsuite/20_util/from_chars/1.cc: Run test as C++14 and repl=
ace
            use of std::string_view with std::string.
            * testsuite/20_util/from_chars/2.cc: Likewise.
            * testsuite/20_util/to_chars/1.cc: Likewise.
            * testsuite/20_util/to_chars/2.cc: Likewise.=