When defining BOOST_STL_INTERFACES_USE_DEDUCED_THIS=1, require C++23 …

…mode for the cases where __cpp_explicit_this_parameter is not defined, but the compiler is known to support it. Obviously, even if those compiler support it, it's not available in older C++ versions. Fixes #72. Related to #68
boostorg · Nov 10, 2024 · cefbd30 · cefbd30
1 parent f89646c
commit cefbd30
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/include/boost/stl_interfaces/config.hpp b/include/boost/stl_interfaces/config.hpp
@@ -20,10 +20,11 @@
 #define BOOST_STL_INTERFACES_USE_CONCEPTS 0
 #endif
 
-#if (defined(__cpp_explicit_this_parameter) ||                                 \
-     (defined(_MSC_VER) && _MSC_VER >= 1941) ||                                \
-     (defined(BOOST_CLANG_VERSION) && BOOST_CLANG_VERSION >= 190000)) &&       \
-    BOOST_STL_INTERFACES_USE_CONCEPTS &&                                       \
+#if (                                                                          \
+    defined(__cpp_explicit_this_parameter) ||                                  \
+    (defined(_MSC_VER) && _MSC_VER >= 1941) ||                                 \
+    (defined(BOOST_CLANG_VERSION) && BOOST_CLANG_VERSION >= 190000)) &&        \
+    BOOST_STL_INTERFACES_USE_CONCEPTS && (202002L < __cplusplus) &&            \
     !defined(BOOST_STL_INTERFACES_DISABLE_DEDUCED_THIS)
 #define BOOST_STL_INTERFACES_USE_DEDUCED_THIS 1
 #else