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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/112702] C23, C++23: Extended characters not valid in an
 identifier with -pedantic
Date: Fri, 24 Nov 2023 19:14:07 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112702

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It's also documented in the release notes:

https://gcc.gnu.org/gcc-13/changes.html#c (see N2836, Identifier Syntax usi=
ng
Unicode Standard Annex 31).=