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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/110653] Support std::stoi etc. without C99 APIs
Date: Wed, 19 Jul 2023 10:04:23 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110653

--- Comment #13 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:58303d42809f0e01f23262f592d37943f7703f71

commit r14-2635-g58303d42809f0e01f23262f592d37943f7703f71
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Jul 13 10:44:57 2023 +0100

    libstdc++: Check autoconf macros for strtof and strtold [PR110653]

    As well as the _GLIBCXX_USE_C99_STDLIB check, we also have a separate
    check in linkage.m4 for just strtof and strtold. We can use that to
    declare std::strtof and std::strtold in <cstdlib> for additional
    targets. That allows us to enable std::stold on hpux11.11 which is
    missing strtoll, strtoull and strtof, so doesn't define
    _GLIBCXX_USE_C99_STDLIB. Although it doesn't help hpux11.11, we can
    define std::stof for more targets this way too.

    As with the previous commit for PR110653, this only affects the narrow
    character overloads. std::stof and std::stold for wstring still requires
    C99 <wchar.h> support.

    libstdc++-v3/ChangeLog:

            PR libstdc++/110653
            * include/bits/basic_string.h [_GLIBCXX_HAVE_STRTOF] (stof):
            Define.
            [_GLIBCXX_HAVE_STRTOLD] (stold): Define.
            * include/c_global/cstdlib [_GLIBCXX_HAVE_STRTOF] (strtof):
            Declare in namespace std.
            [_GLIBCXX_HAVE_STRTOLD] (strtold): Likewise.=