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From: "unlvsur at live dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/98374] No #include <langinfo.h> on windows.
 Bootstrapping failure
Date: Sat, 19 Dec 2020 02:01:25 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98374

cqwrteur <unlvsur at live dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from cqwrteur <unlvsur at live dot com> ---
(In reply to CVS Commits from comment #2)
> The master branch has been updated by Patrick Palka <ppalka@gcc.gnu.org>:
>=20
> https://gcc.gnu.org/g:d7bab388b818fc21dbb9111311e114ae33e11fff
>=20
> commit r11-6259-gd7bab388b818fc21dbb9111311e114ae33e11fff
> Author: Patrick Palka <ppalka@redhat.com>
> Date:   Fri Dec 18 11:52:17 2020 -0500
>=20
>     libstdc++: Fix build failure due to missing <langinfo.h> [PR98374]
>=20=20=20=20=20
>     This should fix a build failure on Windows which lacks <langinfo.h>,
>     from which we use nl_langinfo() to obtain the radix character of the
>     current locale.  (We can't use the more portable localeconv() from
>     <clocale> to obtain the radix character of the current locale here
>     because it's not thread-safe, unfortunately.)
>=20=20=20=20=20
>     This change means that on Windows and other such platforms, we'll just
>     always assume the radix character used by printf is '.' when formatti=
ng
>     a long double through it.
>=20=20=20=20=20
>     libstdc++-v3/ChangeLog:
>=20=20=20=20=20
>             PR libstdc++/98374
>             * src/c++17/floating_to_chars.cc: Guard include of <langinfo.=
h>
>             with __has_include.
>             (__floating_to_chars_precision) [!defined(RADIXCHAR)]: Don't
>             attempt to obtain the radix character of the current locale,
>             just assume it's '.'.

Fixed=