Hello,The attached patch adds _GLIBCXX26_CONSTEXPR, in preparation for adding `constexpr` on some functions starting in C++26.
Thanks, -- Giuseppe D'Angelo
From 61115549376a29558eb7753f525daf671c6da929 Mon Sep 17 00:00:00 2001 From: Giuseppe D'Angelo <giuseppe.dang...@kdab.com> Date: Wed, 1 Jan 2025 12:12:29 +0100 Subject: [PATCH] libstdc++: add a constexpr macro for C++26 Following the precedent of _GLIBCXX20_CONSTEXPR. It will be used to decorate some functions which have been made constexpr in C++26 (for instance P2562R1, and maybe P3508R0, P3369R0, ...). libstdc++-v3/ChangeLog: * include/bits/c++config: Added the _GLIBCXX26_CONSTEXPR macro. Signed-off-by: Giuseppe D'Angelo <giuseppe.dang...@kdab.com> --- libstdc++-v3/include/bits/c++config | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/libstdc++-v3/include/bits/c++config b/libstdc++-v3/include/bits/c++config index a5001d0a0b0..7dc07a77c84 100644 --- a/libstdc++-v3/include/bits/c++config +++ b/libstdc++-v3/include/bits/c++config @@ -222,6 +222,14 @@ # endif #endif +#ifndef _GLIBCXX26_CONSTEXPR +# if __cplusplus >= 202303L +# define _GLIBCXX26_CONSTEXPR constexpr +# else +# define _GLIBCXX26_CONSTEXPR +# endif +#endif + #ifndef _GLIBCXX17_INLINE # if __cplusplus >= 201703L # define _GLIBCXX17_INLINE inline -- 2.34.1
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