https://gcc.gnu.org/g:6a30ffd759ba004c77c7e37520659e9ab0eb80cc
commit r15-7707-g6a30ffd759ba004c77c7e37520659e9ab0eb80cc
Author: Giuseppe D'Angelo <giuseppe.dang...@kdab.com>
Date: Tue Feb 25 18:07:46 2025 +0000
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 (_GLIBCXX26_CONSTEXPR): New macro.
Signed-off-by: Giuseppe D'Angelo <giuseppe.dang...@kdab.com>
Diff:
---
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 07f75ea66595..6a73507d0748 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
