Upped version value

Author: H-G-Hristov

libcxx/docs/FeatureTestMacroTable.rst

@@ -418,6 +418,8 @@ Status
     ---------------------------------------------------------- -----------------
     ``__cpp_lib_atomic_min_max``                               *unimplemented*
     ---------------------------------------------------------- -----------------
+    ``__cpp_lib_atomic_ref``                                   ``202411L``
+    ---------------------------------------------------------- -----------------
     ``__cpp_lib_bind_front``                                   ``202306L``
     ---------------------------------------------------------- -----------------
     ``__cpp_lib_bitset``                                       ``202306L``

libcxx/include/version

@@ -37,7 +37,8 @@ __cpp_lib_atomic_float                                  201711L <atomic>
 __cpp_lib_atomic_is_always_lock_free                    201603L <atomic>
 __cpp_lib_atomic_lock_free_type_aliases                 201907L <atomic>
 __cpp_lib_atomic_min_max                                202403L <atomic>
-__cpp_lib_atomic_ref                                    201806L <atomic>
+__cpp_lib_atomic_ref                                    202411L <atomic>
+                                                        201806L // C++20
 __cpp_lib_atomic_shared_ptr                             201711L <atomic>
 __cpp_lib_atomic_value_initialization                   201911L <atomic> <memory>
 __cpp_lib_atomic_wait                                   201907L <atomic>
@@ -546,6 +547,8 @@ __cpp_lib_void_t                                        201411L <type_traits>
 # define __cpp_lib_aligned_accessor                     202411L
 // # define __cpp_lib_associative_heterogeneous_insertion  202306L
 // # define __cpp_lib_atomic_min_max                       202403L
+# undef  __cpp_lib_atomic_ref
+# define __cpp_lib_atomic_ref                           202411L
 # undef  __cpp_lib_bind_front
 # define __cpp_lib_bind_front                           202306L
 # define __cpp_lib_bitset                               202306L

libcxx/test/std/language.support/support.limits/support.limits.general/atomic.version.compile.pass.cpp

@@ -367,8 +367,8 @@
 #  ifndef __cpp_lib_atomic_ref
 #    error "__cpp_lib_atomic_ref should be defined in c++26"
 #  endif
-#  if __cpp_lib_atomic_ref != 201806L
-#    error "__cpp_lib_atomic_ref should have the value 201806L in c++26"
+#  if __cpp_lib_atomic_ref != 202411L
+#    error "__cpp_lib_atomic_ref should have the value 202411L in c++26"
 #  endif
 
 #  if !defined(_LIBCPP_VERSION)

libcxx/test/std/language.support/support.limits/support.limits.general/version.version.compile.pass.cpp

@@ -6337,8 +6337,8 @@
 #  ifndef __cpp_lib_atomic_ref
 #    error "__cpp_lib_atomic_ref should be defined in c++26"
 #  endif
-#  if __cpp_lib_atomic_ref != 201806L
-#    error "__cpp_lib_atomic_ref should have the value 201806L in c++26"
+#  if __cpp_lib_atomic_ref != 202411L
+#    error "__cpp_lib_atomic_ref should have the value 202411L in c++26"
 #  endif
 
 #  if !defined(_LIBCPP_VERSION)

libcxx/utils/generate_feature_test_macro_components.py

@@ -195,7 +195,10 @@ def add_version_header(tc):
         },
         {
             "name": "__cpp_lib_atomic_ref",
-            "values": {"c++20": 201806},
+            "values": {
+                "c++20": 201806,
+                "c++26": 202411,  # P2835R7: Expose std::atomic_ref 's object address
+            },
             "headers": ["atomic"],
         },
         {