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From: "unlvsur at live dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/103295] constexpr std::string does not work for clang
Date: Wed, 17 Nov 2021 00:57:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103295

--- Comment #4 from cqwrteur <unlvsur at live dot com> ---
(In reply to Andrew Pinski from comment #3)
> This could be an unimplemented feature in clang with respect to C++23 by =
the
> way.

Same code works with clang --target=3Dx86_64-windows-msvc.

D:\hg\fast_io\tests\0003.concat>clang++ -o constexpr_clang_msvcstl.exe
constexpr.cc -Ofast -std=3Dc++20 -s -flto -march=3Dnative -I../../include
--target=3Dx86_64-windows-msvc -fuse-ld=3Dlld -D_DLL=3D1 -lmsvcrt=