https://gcc.gnu.org/g:57f353300f4cf074e6b6ab719c5db0d74708e204
commit r16-7978-g57f353300f4cf074e6b6ab719c5db0d74708e204 Author: Jonathan Wakely <[email protected]> Date: Sat Mar 7 12:14:27 2026 +0000 libstdc++: Use specific feature test macro for #if in <string> libstdc++-v3/ChangeLog: * include/bits/basic_string.h: Check __glibcxx_to_string instead of __cplusplus. Reviewed-by: Tomasz Kamiński <[email protected]> Diff: --- libstdc++-v3/include/bits/basic_string.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/libstdc++-v3/include/bits/basic_string.h b/libstdc++-v3/include/bits/basic_string.h index 9bbe16507d00..202a911f9ef3 100644 --- a/libstdc++-v3/include/bits/basic_string.h +++ b/libstdc++-v3/include/bits/basic_string.h @@ -56,11 +56,10 @@ # include <bits/ranges_util.h> // ranges::subrange #endif -#if __cplusplus > 202302L +#if __glibcxx_to_string >= 202306L // C++ >= 26 # include <charconv> #endif - #if ! _GLIBCXX_USE_CXX11_ABI # include "cow_string.h" #else
