Hi, On 08/01/2025 13:06, Jonathan Wakely wrote:
I agree with using 202400L, for consistency with the actual defined value, and because at a quick glance it's unclear whether 202303 is the value for C++23 or not. You have to know that 202302 is the real value to identify that this is "something later than C++23" whereas 202400 is more obvious.
Good point! New patch attached. Thanks, -- Giuseppe D'Angelo
From da28db92930e32cc6f799c731d51f65327a9ebda 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..3370833a8f7 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 >= 202400L +# 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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