[libcxx-commits] [libcxx] 855d7be - [libc++] [P0887] Add newest feature-test macros; mark `type_identity` as implemented.

Arthur O'Dwyer via libcxx-commits libcxx-commits at lists.llvm.org
Tue Jan 4 14:24:14 PST 2022


Author: Arthur O'Dwyer
Date: 2022-01-04T17:23:37-05:00
New Revision: 855d7bedb71376fc5bdfc17644715b2fa3b10f46

URL: https://github.com/llvm/llvm-project/commit/855d7bedb71376fc5bdfc17644715b2fa3b10f46
DIFF: https://github.com/llvm/llvm-project/commit/855d7bedb71376fc5bdfc17644715b2fa3b10f46.diff

LOG: [libc++] [P0887] Add newest feature-test macros; mark `type_identity` as implemented.

`__cpp_lib_type_identity` was implemented way back in cf49ccd0 (Clang 8),
probably before the feature-test macro had been settled on.

`__cpp_lib_string_resize_and_overwrite` will be added by D113013 so I didn't add it here.

Fixes #46605.

Differential Revision: https://reviews.llvm.org/D116433

Added: 
    libcxx/test/std/language.support/support.limits/support.limits.general/typeinfo.version.pass.cpp

Modified: 
    libcxx/docs/FeatureTestMacroTable.rst
    libcxx/include/version
    libcxx/test/std/language.support/support.limits/support.limits.general/algorithm.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/functional.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/map.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/memory.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/set.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/tuple.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/type_traits.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/unordered_map.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/unordered_set.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp
    libcxx/test/std/language.support/support.limits/support.limits.general/version.version.pass.cpp
    libcxx/utils/generate_feature_test_macro_components.py

Removed: 
    


################################################################################
diff  --git a/libcxx/docs/FeatureTestMacroTable.rst b/libcxx/docs/FeatureTestMacroTable.rst
index 0578ff829883..714ed803ba69 100644
--- a/libcxx/docs/FeatureTestMacroTable.rst
+++ b/libcxx/docs/FeatureTestMacroTable.rst
@@ -290,16 +290,36 @@ Status
     ------------------------------------------------- -----------------
     ``__cpp_lib_to_array``                            ``201907L``
     ------------------------------------------------- -----------------
+    ``__cpp_lib_type_identity``                       ``201806L``
+    ------------------------------------------------- -----------------
     ``__cpp_lib_unwrap_ref``                          ``201811L``
     ------------------------------------------------- -----------------
     **C++ 2b**
     -------------------------------------------------------------------
+    ``__cpp_lib_allocate_at_least``                   *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_associative_heterogeneous_erasure``   *unimplemented*
+    ------------------------------------------------- -----------------
     ``__cpp_lib_byteswap``                            ``202110L``
     ------------------------------------------------- -----------------
+    ``__cpp_lib_constexpr_typeinfo``                  *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_invoke_r``                            *unimplemented*
+    ------------------------------------------------- -----------------
     ``__cpp_lib_is_scoped_enum``                      ``202011L``
     ------------------------------------------------- -----------------
     ``__cpp_lib_monadic_optional``                    ``202110L``
     ------------------------------------------------- -----------------
+    ``__cpp_lib_move_only_function``                  *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_out_ptr``                             *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_starts_ends_with``             *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_ranges_zip``                          *unimplemented*
+    ------------------------------------------------- -----------------
+    ``__cpp_lib_spanstream``                          *unimplemented*
+    ------------------------------------------------- -----------------
     ``__cpp_lib_stacktrace``                          *unimplemented*
     ------------------------------------------------- -----------------
     ``__cpp_lib_stdatomic_h``                         *unimplemented*

diff  --git a/libcxx/include/version b/libcxx/include/version
index 574dfe47b58f..db67b2e65167 100644
--- a/libcxx/include/version
+++ b/libcxx/include/version
@@ -15,6 +15,7 @@
 
 Macro name                                              Value   Headers
 __cpp_lib_addressof_constexpr                           201603L <memory>
+__cpp_lib_allocate_at_least                             202106L <memory>
 __cpp_lib_allocator_traits_is_always_equal              201411L <deque> <forward_list> <list>
                                                                 <map> <memory> <scoped_allocator>
                                                                 <set> <string> <unordered_map>
@@ -24,6 +25,8 @@ __cpp_lib_apply                                         201603L <tuple>
 __cpp_lib_array_constexpr                               201811L <array> <iterator>
                                                         201603L // C++17
 __cpp_lib_as_const                                      201510L <utility>
+__cpp_lib_associative_heterogeneous_erasure             202110L <map> <set> <unordered_map>
+                                                                <unordered_set>
 __cpp_lib_assume_aligned                                201811L <memory>
 __cpp_lib_atomic_flag_test                              201907L <atomic>
 __cpp_lib_atomic_float                                  201711L <atomic>
@@ -60,6 +63,7 @@ __cpp_lib_constexpr_numeric                             201911L <numeric>
 __cpp_lib_constexpr_string                              201811L <string>
 __cpp_lib_constexpr_string_view                         201811L <string_view>
 __cpp_lib_constexpr_tuple                               201811L <tuple>
+__cpp_lib_constexpr_typeinfo                            202106L <typeinfo>
 __cpp_lib_constexpr_utility                             201811L <utility>
 __cpp_lib_constexpr_vector                              201907L <vector>
 __cpp_lib_coroutine                                     201902L <coroutine>
@@ -87,6 +91,7 @@ __cpp_lib_integer_sequence                              201304L <utility>
 __cpp_lib_integral_constant_callable                    201304L <type_traits>
 __cpp_lib_interpolate                                   201902L <cmath> <numeric>
 __cpp_lib_invoke                                        201411L <functional>
+__cpp_lib_invoke_r                                      202106L <functional>
 __cpp_lib_is_aggregate                                  201703L <type_traits>
 __cpp_lib_is_constant_evaluated                         201811L <type_traits>
 __cpp_lib_is_final                                      201402L <type_traits>
@@ -110,6 +115,7 @@ __cpp_lib_math_constants                                201907L <numbers>
 __cpp_lib_math_special_functions                        201603L <cmath>
 __cpp_lib_memory_resource                               201603L <memory_resource>
 __cpp_lib_monadic_optional                              202110L <optional>
+__cpp_lib_move_only_function                            202110L <functional>
 __cpp_lib_node_extract                                  201606L <map> <set> <unordered_map>
                                                                 <unordered_set>
 __cpp_lib_nonmember_container_access                    201411L <array> <deque> <forward_list>
@@ -119,11 +125,14 @@ __cpp_lib_nonmember_container_access                    201411L <array> <deque>
 __cpp_lib_not_fn                                        201603L <functional>
 __cpp_lib_null_iterators                                201304L <iterator>
 __cpp_lib_optional                                      201606L <optional>
+__cpp_lib_out_ptr                                       202106L <memory>
 __cpp_lib_parallel_algorithm                            201603L <algorithm> <numeric>
 __cpp_lib_polymorphic_allocator                         201902L <memory>
 __cpp_lib_quoted_string_io                              201304L <iomanip>
 __cpp_lib_ranges                                        201811L <algorithm> <functional> <iterator>
                                                                 <memory> <ranges>
+__cpp_lib_ranges_starts_ends_with                       202106L <algorithm>
+__cpp_lib_ranges_zip                                    202110L <ranges> <tuple> <utility>
 __cpp_lib_raw_memory_algorithms                         201606L <memory>
 __cpp_lib_remove_cvref                                  201711L <type_traits>
 __cpp_lib_result_of_sfinae                              201210L <functional> <type_traits>
@@ -139,6 +148,7 @@ __cpp_lib_shift                                         201806L <algorithm>
 __cpp_lib_smart_ptr_for_overwrite                       202002L <memory>
 __cpp_lib_source_location                               201907L <source_location>
 __cpp_lib_span                                          202002L <span>
+__cpp_lib_spanstream                                    202106L <spanstream>
 __cpp_lib_ssize                                         201902L <iterator>
 __cpp_lib_stacktrace                                    202011L <stacktrace>
 __cpp_lib_starts_ends_with                              201711L <string> <string_view>
@@ -158,6 +168,7 @@ __cpp_lib_transparent_operators                         201510L <functional> <me
                                                         201210L // C++14
 __cpp_lib_tuple_element_t                               201402L <tuple>
 __cpp_lib_tuples_by_type                                201304L <tuple> <utility>
+__cpp_lib_type_identity                                 201806L <type_traits>
 __cpp_lib_type_trait_variable_templates                 201510L <type_traits>
 __cpp_lib_uncaught_exceptions                           201411L <exception>
 __cpp_lib_unordered_map_try_emplace                     201411L <unordered_map>
@@ -342,13 +353,23 @@ __cpp_lib_void_t                                        201411L <type_traits>
 // # define __cpp_lib_three_way_comparison                 201907L
 # define __cpp_lib_to_address                           201711L
 # define __cpp_lib_to_array                             201907L
+# define __cpp_lib_type_identity                        201806L
 # define __cpp_lib_unwrap_ref                           201811L
 #endif
 
 #if _LIBCPP_STD_VER > 20
+// # define __cpp_lib_allocate_at_least                    202106L
+// # define __cpp_lib_associative_heterogeneous_erasure    202110L
 # define __cpp_lib_byteswap                             202110L
+// # define __cpp_lib_constexpr_typeinfo                   202106L
+// # define __cpp_lib_invoke_r                             202106L
 # define __cpp_lib_is_scoped_enum                       202011L
 # define __cpp_lib_monadic_optional                     202110L
+// # define __cpp_lib_move_only_function                   202110L
+// # define __cpp_lib_out_ptr                              202106L
+// # define __cpp_lib_ranges_starts_ends_with              202106L
+// # define __cpp_lib_ranges_zip                           202110L
+// # define __cpp_lib_spanstream                           202106L
 // # define __cpp_lib_stacktrace                           202011L
 // # define __cpp_lib_stdatomic_h                          202011L
 # define __cpp_lib_string_contains                      202011L

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/algorithm.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/algorithm.version.pass.cpp
index eb7591540eac..b96055d348b8 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/algorithm.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/algorithm.version.pass.cpp
@@ -20,6 +20,7 @@
     __cpp_lib_constexpr_algorithms           201806L [C++20]
     __cpp_lib_parallel_algorithm             201603L [C++17]
     __cpp_lib_ranges                         201811L [C++20]
+    __cpp_lib_ranges_starts_ends_with        202106L [C++2b]
     __cpp_lib_robust_nonmodifying_seq_ops    201304L [C++14]
     __cpp_lib_sample                         201603L [C++17]
     __cpp_lib_shift                          201806L [C++20]
@@ -46,6 +47,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_robust_nonmodifying_seq_ops
 #   error "__cpp_lib_robust_nonmodifying_seq_ops should not be defined before c++14"
 # endif
@@ -76,6 +81,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_robust_nonmodifying_seq_ops
 #   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++14"
 # endif
@@ -121,6 +130,10 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_robust_nonmodifying_seq_ops
 #   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++17"
 # endif
@@ -181,6 +194,10 @@
 #   endif
 # endif
 
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_robust_nonmodifying_seq_ops
 #   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++20"
 # endif
@@ -244,6 +261,19 @@
 #   endif
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_starts_ends_with
+#     error "__cpp_lib_ranges_starts_ends_with should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_starts_ends_with != 202106L
+#     error "__cpp_lib_ranges_starts_ends_with should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_starts_ends_with
+#     error "__cpp_lib_ranges_starts_ends_with should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_robust_nonmodifying_seq_ops
 #   error "__cpp_lib_robust_nonmodifying_seq_ops should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/functional.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/functional.version.pass.cpp
index 77ceb9f31457..f8975101ee05 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/functional.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/functional.version.pass.cpp
@@ -20,6 +20,8 @@
     __cpp_lib_boyer_moore_searcher     201603L [C++17]
     __cpp_lib_constexpr_functional     201907L [C++20]
     __cpp_lib_invoke                   201411L [C++17]
+    __cpp_lib_invoke_r                 202106L [C++2b]
+    __cpp_lib_move_only_function       202110L [C++2b]
     __cpp_lib_not_fn                   201603L [C++17]
     __cpp_lib_ranges                   201811L [C++20]
     __cpp_lib_result_of_sfinae         201210L [C++14]
@@ -49,6 +51,14 @@
 #   error "__cpp_lib_invoke should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_not_fn
 #   error "__cpp_lib_not_fn should not be defined before c++17"
 # endif
@@ -87,6 +97,14 @@
 #   error "__cpp_lib_invoke should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_not_fn
 #   error "__cpp_lib_not_fn should not be defined before c++17"
 # endif
@@ -143,6 +161,14 @@
 #   error "__cpp_lib_invoke should have the value 201411L in c++17"
 # endif
 
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_not_fn
 #   error "__cpp_lib_not_fn should be defined in c++17"
 # endif
@@ -208,6 +234,14 @@
 #   error "__cpp_lib_invoke should have the value 201411L in c++20"
 # endif
 
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_not_fn
 #   error "__cpp_lib_not_fn should be defined in c++20"
 # endif
@@ -285,6 +319,32 @@
 #   error "__cpp_lib_invoke should have the value 201411L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_invoke_r
+#     error "__cpp_lib_invoke_r should be defined in c++2b"
+#   endif
+#   if __cpp_lib_invoke_r != 202106L
+#     error "__cpp_lib_invoke_r should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_invoke_r
+#     error "__cpp_lib_invoke_r should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_move_only_function
+#     error "__cpp_lib_move_only_function should be defined in c++2b"
+#   endif
+#   if __cpp_lib_move_only_function != 202110L
+#     error "__cpp_lib_move_only_function should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_move_only_function
+#     error "__cpp_lib_move_only_function should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_not_fn
 #   error "__cpp_lib_not_fn should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/map.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/map.version.pass.cpp
index 85c5b46d7e3f..a68273a9e7f2 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/map.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/map.version.pass.cpp
@@ -15,13 +15,14 @@
 
 // Test the feature test macros defined by <map>
 
-/*  Constant                                      Value
-    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
-    __cpp_lib_erase_if                            202002L [C++20]
-    __cpp_lib_generic_associative_lookup          201304L [C++14]
-    __cpp_lib_map_try_emplace                     201411L [C++17]
-    __cpp_lib_node_extract                        201606L [C++17]
-    __cpp_lib_nonmember_container_access          201411L [C++17]
+/*  Constant                                       Value
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_generic_associative_lookup           201304L [C++14]
+    __cpp_lib_map_try_emplace                      201411L [C++17]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
 */
 
 #include <map>
@@ -33,6 +34,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -59,6 +64,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -91,6 +100,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -132,6 +145,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++20"
 # endif
@@ -176,6 +193,19 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/memory.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/memory.version.pass.cpp
index dfa5b569081d..415eaa385767 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/memory.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/memory.version.pass.cpp
@@ -17,6 +17,7 @@
 
 /*  Constant                                      Value
     __cpp_lib_addressof_constexpr                 201603L [C++17]
+    __cpp_lib_allocate_at_least                   202106L [C++2b]
     __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
     __cpp_lib_assume_aligned                      201811L [C++20]
     __cpp_lib_atomic_value_initialization         201911L [C++20]
@@ -24,6 +25,7 @@
     __cpp_lib_constexpr_memory                    201811L [C++20]
     __cpp_lib_enable_shared_from_this             201603L [C++17]
     __cpp_lib_make_unique                         201304L [C++14]
+    __cpp_lib_out_ptr                             202106L [C++2b]
     __cpp_lib_polymorphic_allocator               201902L [C++20]
     __cpp_lib_ranges                              201811L [C++20]
     __cpp_lib_raw_memory_algorithms               201606L [C++17]
@@ -44,6 +46,10 @@
 #   error "__cpp_lib_addressof_constexpr should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
@@ -72,6 +78,10 @@
 #   error "__cpp_lib_make_unique should not be defined before c++14"
 # endif
 
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_polymorphic_allocator
 #   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
 # endif
@@ -110,6 +120,10 @@
 #   error "__cpp_lib_addressof_constexpr should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
@@ -141,6 +155,10 @@
 #   error "__cpp_lib_make_unique should have the value 201304L in c++14"
 # endif
 
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_polymorphic_allocator
 #   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
 # endif
@@ -185,6 +203,10 @@
 #   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++17"
 # endif
 
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
 # endif
@@ -222,6 +244,10 @@
 #   error "__cpp_lib_make_unique should have the value 201304L in c++17"
 # endif
 
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_polymorphic_allocator
 #   error "__cpp_lib_polymorphic_allocator should not be defined before c++20"
 # endif
@@ -275,6 +301,10 @@
 #   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++20"
 # endif
 
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
 # endif
@@ -330,6 +360,10 @@
 #   error "__cpp_lib_make_unique should have the value 201304L in c++20"
 # endif
 
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_polymorphic_allocator
 #     error "__cpp_lib_polymorphic_allocator should be defined in c++20"
@@ -413,6 +447,19 @@
 #   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_allocate_at_least
+#     error "__cpp_lib_allocate_at_least should be defined in c++2b"
+#   endif
+#   if __cpp_lib_allocate_at_least != 202106L
+#     error "__cpp_lib_allocate_at_least should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_allocate_at_least
+#     error "__cpp_lib_allocate_at_least should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
 # endif
@@ -468,6 +515,19 @@
 #   error "__cpp_lib_make_unique should have the value 201304L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_out_ptr
+#     error "__cpp_lib_out_ptr should be defined in c++2b"
+#   endif
+#   if __cpp_lib_out_ptr != 202106L
+#     error "__cpp_lib_out_ptr should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_out_ptr
+#     error "__cpp_lib_out_ptr should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_polymorphic_allocator
 #     error "__cpp_lib_polymorphic_allocator should be defined in c++2b"

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.pass.cpp
index b1da06fa52fa..177d89f35ca2 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/ranges.version.pass.cpp
@@ -17,8 +17,9 @@
 
 // Test the feature test macros defined by <ranges>
 
-/*  Constant            Value
-    __cpp_lib_ranges    201811L [C++20]
+/*  Constant                Value
+    __cpp_lib_ranges        201811L [C++20]
+    __cpp_lib_ranges_zip    202110L [C++2b]
 */
 
 #include <ranges>
@@ -30,18 +31,30 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 #elif TEST_STD_VER == 14
 
 # ifdef __cpp_lib_ranges
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 #elif TEST_STD_VER == 17
 
 # ifdef __cpp_lib_ranges
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 #elif TEST_STD_VER == 20
 
 # if !defined(_LIBCPP_VERSION)
@@ -57,6 +70,10 @@
 #   endif
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 #elif TEST_STD_VER > 20
 
 # if !defined(_LIBCPP_VERSION)
@@ -72,6 +89,19 @@
 #   endif
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_zip != 202110L
+#     error "__cpp_lib_ranges_zip should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 #endif // TEST_STD_VER > 20
 
 int main(int, char**) { return 0; }

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/set.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/set.version.pass.cpp
index 57fdd5b21f40..53825881afb9 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/set.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/set.version.pass.cpp
@@ -15,12 +15,13 @@
 
 // Test the feature test macros defined by <set>
 
-/*  Constant                                      Value
-    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
-    __cpp_lib_erase_if                            202002L [C++20]
-    __cpp_lib_generic_associative_lookup          201304L [C++14]
-    __cpp_lib_node_extract                        201606L [C++17]
-    __cpp_lib_nonmember_container_access          201411L [C++17]
+/*  Constant                                       Value
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_generic_associative_lookup           201304L [C++14]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
 */
 
 #include <set>
@@ -32,6 +33,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -54,6 +59,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -82,6 +91,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -116,6 +129,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++20"
 # endif
@@ -153,6 +170,19 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/tuple.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/tuple.version.pass.cpp
index 5d870a8cd0c1..3b312ee5bd4d 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/tuple.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/tuple.version.pass.cpp
@@ -19,6 +19,7 @@
     __cpp_lib_apply              201603L [C++17]
     __cpp_lib_constexpr_tuple    201811L [C++20]
     __cpp_lib_make_from_tuple    201606L [C++17]
+    __cpp_lib_ranges_zip         202110L [C++2b]
     __cpp_lib_tuple_element_t    201402L [C++14]
     __cpp_lib_tuples_by_type     201304L [C++14]
 */
@@ -40,6 +41,10 @@
 #   error "__cpp_lib_make_from_tuple should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_tuple_element_t
 #   error "__cpp_lib_tuple_element_t should not be defined before c++14"
 # endif
@@ -62,6 +67,10 @@
 #   error "__cpp_lib_make_from_tuple should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_tuple_element_t
 #   error "__cpp_lib_tuple_element_t should be defined in c++14"
 # endif
@@ -96,6 +105,10 @@
 #   error "__cpp_lib_make_from_tuple should have the value 201606L in c++17"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_tuple_element_t
 #   error "__cpp_lib_tuple_element_t should be defined in c++17"
 # endif
@@ -133,6 +146,10 @@
 #   error "__cpp_lib_make_from_tuple should have the value 201606L in c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_tuple_element_t
 #   error "__cpp_lib_tuple_element_t should be defined in c++20"
 # endif
@@ -170,6 +187,19 @@
 #   error "__cpp_lib_make_from_tuple should have the value 201606L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_zip != 202110L
+#     error "__cpp_lib_ranges_zip should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_tuple_element_t
 #   error "__cpp_lib_tuple_element_t should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/type_traits.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/type_traits.version.pass.cpp
index aefb00b849dd..aeff3ad31a98 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/type_traits.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/type_traits.version.pass.cpp
@@ -34,6 +34,7 @@
     __cpp_lib_remove_cvref                         201711L [C++20]
     __cpp_lib_result_of_sfinae                     201210L [C++14]
     __cpp_lib_transformation_trait_aliases         201304L [C++14]
+    __cpp_lib_type_identity                        201806L [C++20]
     __cpp_lib_type_trait_variable_templates        201510L [C++17]
     __cpp_lib_void_t                               201411L [C++17]
 */
@@ -115,6 +116,10 @@
 #   error "__cpp_lib_transformation_trait_aliases should not be defined before c++14"
 # endif
 
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
 # ifdef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should not be defined before c++17"
 # endif
@@ -212,6 +217,10 @@
 #   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++14"
 # endif
 
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
 # ifdef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should not be defined before c++17"
 # endif
@@ -327,6 +336,10 @@
 #   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++17"
 # endif
 
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
 # ifndef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should be defined in c++17"
 # endif
@@ -478,6 +491,13 @@
 #   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++20"
 # endif
 
+# ifndef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should be defined in c++20"
+# endif
+# if __cpp_lib_type_identity != 201806L
+#   error "__cpp_lib_type_identity should have the value 201806L in c++20"
+# endif
+
 # ifndef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should be defined in c++20"
 # endif
@@ -632,6 +652,13 @@
 #   error "__cpp_lib_transformation_trait_aliases should have the value 201304L in c++2b"
 # endif
 
+# ifndef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should be defined in c++2b"
+# endif
+# if __cpp_lib_type_identity != 201806L
+#   error "__cpp_lib_type_identity should have the value 201806L in c++2b"
+# endif
+
 # ifndef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/typeinfo.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/typeinfo.version.pass.cpp
new file mode 100644
index 000000000000..122effde1b8a
--- /dev/null
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/typeinfo.version.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// WARNING: This test was generated by generate_feature_test_macro_components.py
+// and should not be edited manually.
+//
+// clang-format off
+
+// <typeinfo>
+
+// Test the feature test macros defined by <typeinfo>
+
+/*  Constant                        Value
+    __cpp_lib_constexpr_typeinfo    202106L [C++2b]
+*/
+
+#include <typeinfo>
+#include "test_macros.h"
+
+#if TEST_STD_VER < 14
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 14
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 17
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER == 20
+
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
+#elif TEST_STD_VER > 20
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_constexpr_typeinfo
+#     error "__cpp_lib_constexpr_typeinfo should be defined in c++2b"
+#   endif
+#   if __cpp_lib_constexpr_typeinfo != 202106L
+#     error "__cpp_lib_constexpr_typeinfo should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_constexpr_typeinfo
+#     error "__cpp_lib_constexpr_typeinfo should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+#endif // TEST_STD_VER > 20
+
+int main(int, char**) { return 0; }

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_map.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_map.version.pass.cpp
index b8e20ff848ba..e639dffdd5dd 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_map.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_map.version.pass.cpp
@@ -15,13 +15,14 @@
 
 // Test the feature test macros defined by <unordered_map>
 
-/*  Constant                                      Value
-    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
-    __cpp_lib_erase_if                            202002L [C++20]
-    __cpp_lib_generic_unordered_lookup            201811L [C++20]
-    __cpp_lib_node_extract                        201606L [C++17]
-    __cpp_lib_nonmember_container_access          201411L [C++17]
-    __cpp_lib_unordered_map_try_emplace           201411L [C++17]
+/*  Constant                                       Value
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_generic_unordered_lookup             201811L [C++20]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
+    __cpp_lib_unordered_map_try_emplace            201411L [C++17]
 */
 
 #include <unordered_map>
@@ -33,6 +34,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -59,6 +64,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -88,6 +97,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -126,6 +139,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++20"
 # endif
@@ -170,6 +187,19 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_set.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_set.version.pass.cpp
index 89692c766ab7..aed7c73d9e66 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_set.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/unordered_set.version.pass.cpp
@@ -15,12 +15,13 @@
 
 // Test the feature test macros defined by <unordered_set>
 
-/*  Constant                                      Value
-    __cpp_lib_allocator_traits_is_always_equal    201411L [C++17]
-    __cpp_lib_erase_if                            202002L [C++20]
-    __cpp_lib_generic_unordered_lookup            201811L [C++20]
-    __cpp_lib_node_extract                        201606L [C++17]
-    __cpp_lib_nonmember_container_access          201411L [C++17]
+/*  Constant                                       Value
+    __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
+    __cpp_lib_erase_if                             202002L [C++20]
+    __cpp_lib_generic_unordered_lookup             201811L [C++20]
+    __cpp_lib_node_extract                         201606L [C++17]
+    __cpp_lib_nonmember_container_access           201411L [C++17]
 */
 
 #include <unordered_set>
@@ -32,6 +33,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -54,6 +59,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -79,6 +88,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should not be defined before c++20"
 # endif
@@ -110,6 +123,10 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++20"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++20"
 # endif
@@ -147,6 +164,19 @@
 #   error "__cpp_lib_allocator_traits_is_always_equal should have the value 201411L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_erase_if
 #   error "__cpp_lib_erase_if should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp
index 0159371ab250..5d4f2c252a3f 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/utility.version.pass.cpp
@@ -21,6 +21,7 @@
     __cpp_lib_exchange_function               201304L [C++14]
     __cpp_lib_integer_comparison_functions    202002L [C++20]
     __cpp_lib_integer_sequence                201304L [C++14]
+    __cpp_lib_ranges_zip                      202110L [C++2b]
     __cpp_lib_to_underlying                   202102L [C++2b]
     __cpp_lib_tuples_by_type                  201304L [C++14]
 */
@@ -50,6 +51,10 @@
 #   error "__cpp_lib_integer_sequence should not be defined before c++14"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_to_underlying
 #   error "__cpp_lib_to_underlying should not be defined before c++2b"
 # endif
@@ -86,6 +91,10 @@
 #   error "__cpp_lib_integer_sequence should have the value 201304L in c++14"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_to_underlying
 #   error "__cpp_lib_to_underlying should not be defined before c++2b"
 # endif
@@ -128,6 +137,10 @@
 #   error "__cpp_lib_integer_sequence should have the value 201304L in c++17"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_to_underlying
 #   error "__cpp_lib_to_underlying should not be defined before c++2b"
 # endif
@@ -182,6 +195,10 @@
 #   error "__cpp_lib_integer_sequence should have the value 201304L in c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_to_underlying
 #   error "__cpp_lib_to_underlying should not be defined before c++2b"
 # endif
@@ -236,6 +253,19 @@
 #   error "__cpp_lib_integer_sequence should have the value 201304L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_zip != 202110L
+#     error "__cpp_lib_ranges_zip should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_to_underlying
 #   error "__cpp_lib_to_underlying should be defined in c++2b"
 # endif

diff  --git a/libcxx/test/std/language.support/support.limits/support.limits.general/version.version.pass.cpp b/libcxx/test/std/language.support/support.limits/support.limits.general/version.version.pass.cpp
index 9637d3fc2a11..c22dda85a247 100644
--- a/libcxx/test/std/language.support/support.limits/support.limits.general/version.version.pass.cpp
+++ b/libcxx/test/std/language.support/support.limits/support.limits.general/version.version.pass.cpp
@@ -17,12 +17,14 @@
 
 /*  Constant                                       Value
     __cpp_lib_addressof_constexpr                  201603L [C++17]
+    __cpp_lib_allocate_at_least                    202106L [C++2b]
     __cpp_lib_allocator_traits_is_always_equal     201411L [C++17]
     __cpp_lib_any                                  201606L [C++17]
     __cpp_lib_apply                                201603L [C++17]
     __cpp_lib_array_constexpr                      201603L [C++17]
                                                    201811L [C++20]
     __cpp_lib_as_const                             201510L [C++17]
+    __cpp_lib_associative_heterogeneous_erasure    202110L [C++2b]
     __cpp_lib_assume_aligned                       201811L [C++20]
     __cpp_lib_atomic_flag_test                     201907L [C++20]
     __cpp_lib_atomic_float                         201711L [C++20]
@@ -57,6 +59,7 @@
     __cpp_lib_constexpr_string                     201811L [C++20]
     __cpp_lib_constexpr_string_view                201811L [C++20]
     __cpp_lib_constexpr_tuple                      201811L [C++20]
+    __cpp_lib_constexpr_typeinfo                   202106L [C++2b]
     __cpp_lib_constexpr_utility                    201811L [C++20]
     __cpp_lib_constexpr_vector                     201907L [C++20]
     __cpp_lib_coroutine                            201902L [C++20]
@@ -82,6 +85,7 @@
     __cpp_lib_integral_constant_callable           201304L [C++14]
     __cpp_lib_interpolate                          201902L [C++20]
     __cpp_lib_invoke                               201411L [C++17]
+    __cpp_lib_invoke_r                             202106L [C++2b]
     __cpp_lib_is_aggregate                         201703L [C++17]
     __cpp_lib_is_constant_evaluated                201811L [C++20]
     __cpp_lib_is_final                             201402L [C++14]
@@ -105,15 +109,19 @@
     __cpp_lib_math_special_functions               201603L [C++17]
     __cpp_lib_memory_resource                      201603L [C++17]
     __cpp_lib_monadic_optional                     202110L [C++2b]
+    __cpp_lib_move_only_function                   202110L [C++2b]
     __cpp_lib_node_extract                         201606L [C++17]
     __cpp_lib_nonmember_container_access           201411L [C++17]
     __cpp_lib_not_fn                               201603L [C++17]
     __cpp_lib_null_iterators                       201304L [C++14]
     __cpp_lib_optional                             201606L [C++17]
+    __cpp_lib_out_ptr                              202106L [C++2b]
     __cpp_lib_parallel_algorithm                   201603L [C++17]
     __cpp_lib_polymorphic_allocator                201902L [C++20]
     __cpp_lib_quoted_string_io                     201304L [C++14]
     __cpp_lib_ranges                               201811L [C++20]
+    __cpp_lib_ranges_starts_ends_with              202106L [C++2b]
+    __cpp_lib_ranges_zip                           202110L [C++2b]
     __cpp_lib_raw_memory_algorithms                201606L [C++17]
     __cpp_lib_remove_cvref                         201711L [C++20]
     __cpp_lib_result_of_sfinae                     201210L [C++14]
@@ -129,6 +137,7 @@
     __cpp_lib_smart_ptr_for_overwrite              202002L [C++20]
     __cpp_lib_source_location                      201907L [C++20]
     __cpp_lib_span                                 202002L [C++20]
+    __cpp_lib_spanstream                           202106L [C++2b]
     __cpp_lib_ssize                                201902L [C++20]
     __cpp_lib_stacktrace                           202011L [C++2b]
     __cpp_lib_starts_ends_with                     201711L [C++20]
@@ -148,6 +157,7 @@
                                                    201510L [C++17]
     __cpp_lib_tuple_element_t                      201402L [C++14]
     __cpp_lib_tuples_by_type                       201304L [C++14]
+    __cpp_lib_type_identity                        201806L [C++20]
     __cpp_lib_type_trait_variable_templates        201510L [C++17]
     __cpp_lib_uncaught_exceptions                  201411L [C++17]
     __cpp_lib_unordered_map_try_emplace            201411L [C++17]
@@ -165,6 +175,10 @@
 #   error "__cpp_lib_addressof_constexpr should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
@@ -185,6 +199,10 @@
 #   error "__cpp_lib_as_const should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_assume_aligned
 #   error "__cpp_lib_assume_aligned should not be defined before c++20"
 # endif
@@ -321,6 +339,10 @@
 #   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_constexpr_utility
 #   error "__cpp_lib_constexpr_utility should not be defined before c++20"
 # endif
@@ -417,6 +439,10 @@
 #   error "__cpp_lib_invoke should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_is_aggregate
 #   error "__cpp_lib_is_aggregate should not be defined before c++17"
 # endif
@@ -509,6 +535,10 @@
 #   error "__cpp_lib_monadic_optional should not be defined before c++2b"
 # endif
 
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_node_extract
 #   error "__cpp_lib_node_extract should not be defined before c++17"
 # endif
@@ -529,6 +559,10 @@
 #   error "__cpp_lib_optional should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_parallel_algorithm
 #   error "__cpp_lib_parallel_algorithm should not be defined before c++17"
 # endif
@@ -545,6 +579,14 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_raw_memory_algorithms
 #   error "__cpp_lib_raw_memory_algorithms should not be defined before c++17"
 # endif
@@ -605,6 +647,10 @@
 #   error "__cpp_lib_span should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_spanstream
+#   error "__cpp_lib_spanstream should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ssize
 #   error "__cpp_lib_ssize should not be defined before c++20"
 # endif
@@ -673,6 +719,10 @@
 #   error "__cpp_lib_tuples_by_type should not be defined before c++14"
 # endif
 
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
 # ifdef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should not be defined before c++17"
 # endif
@@ -703,6 +753,10 @@
 #   error "__cpp_lib_addressof_constexpr should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should not be defined before c++17"
 # endif
@@ -723,6 +777,10 @@
 #   error "__cpp_lib_as_const should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_assume_aligned
 #   error "__cpp_lib_assume_aligned should not be defined before c++20"
 # endif
@@ -865,6 +923,10 @@
 #   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_constexpr_utility
 #   error "__cpp_lib_constexpr_utility should not be defined before c++20"
 # endif
@@ -973,6 +1035,10 @@
 #   error "__cpp_lib_invoke should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_is_aggregate
 #   error "__cpp_lib_is_aggregate should not be defined before c++17"
 # endif
@@ -1077,6 +1143,10 @@
 #   error "__cpp_lib_monadic_optional should not be defined before c++2b"
 # endif
 
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_node_extract
 #   error "__cpp_lib_node_extract should not be defined before c++17"
 # endif
@@ -1100,6 +1170,10 @@
 #   error "__cpp_lib_optional should not be defined before c++17"
 # endif
 
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_parallel_algorithm
 #   error "__cpp_lib_parallel_algorithm should not be defined before c++17"
 # endif
@@ -1119,6 +1193,14 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_raw_memory_algorithms
 #   error "__cpp_lib_raw_memory_algorithms should not be defined before c++17"
 # endif
@@ -1194,6 +1276,10 @@
 #   error "__cpp_lib_span should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_spanstream
+#   error "__cpp_lib_spanstream should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ssize
 #   error "__cpp_lib_ssize should not be defined before c++20"
 # endif
@@ -1277,6 +1363,10 @@
 #   error "__cpp_lib_tuples_by_type should have the value 201304L in c++14"
 # endif
 
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
 # ifdef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should not be defined before c++17"
 # endif
@@ -1310,6 +1400,10 @@
 #   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++17"
 # endif
 
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++17"
 # endif
@@ -1345,6 +1439,10 @@
 #   error "__cpp_lib_as_const should have the value 201510L in c++17"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_assume_aligned
 #   error "__cpp_lib_assume_aligned should not be defined before c++20"
 # endif
@@ -1511,6 +1609,10 @@
 #   error "__cpp_lib_constexpr_tuple should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_constexpr_utility
 #   error "__cpp_lib_constexpr_utility should not be defined before c++20"
 # endif
@@ -1664,6 +1766,10 @@
 #   error "__cpp_lib_invoke should have the value 201411L in c++17"
 # endif
 
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_is_aggregate
 #   error "__cpp_lib_is_aggregate should be defined in c++17"
 # endif
@@ -1807,6 +1913,10 @@
 #   error "__cpp_lib_monadic_optional should not be defined before c++2b"
 # endif
 
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_node_extract
 #   error "__cpp_lib_node_extract should be defined in c++17"
 # endif
@@ -1842,6 +1952,10 @@
 #   error "__cpp_lib_optional should have the value 201606L in c++17"
 # endif
 
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_parallel_algorithm
 #     error "__cpp_lib_parallel_algorithm should be defined in c++17"
@@ -1870,6 +1984,14 @@
 #   error "__cpp_lib_ranges should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_raw_memory_algorithms
 #   error "__cpp_lib_raw_memory_algorithms should be defined in c++17"
 # endif
@@ -1969,6 +2091,10 @@
 #   error "__cpp_lib_span should not be defined before c++20"
 # endif
 
+# ifdef __cpp_lib_spanstream
+#   error "__cpp_lib_spanstream should not be defined before c++2b"
+# endif
+
 # ifdef __cpp_lib_ssize
 #   error "__cpp_lib_ssize should not be defined before c++20"
 # endif
@@ -2064,6 +2190,10 @@
 #   error "__cpp_lib_tuples_by_type should have the value 201304L in c++17"
 # endif
 
+# ifdef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should not be defined before c++20"
+# endif
+
 # ifndef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should be defined in c++17"
 # endif
@@ -2112,6 +2242,10 @@
 #   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++20"
 # endif
 
+# ifdef __cpp_lib_allocate_at_least
+#   error "__cpp_lib_allocate_at_least should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++20"
 # endif
@@ -2147,6 +2281,10 @@
 #   error "__cpp_lib_as_const should have the value 201510L in c++20"
 # endif
 
+# ifdef __cpp_lib_associative_heterogeneous_erasure
+#   error "__cpp_lib_associative_heterogeneous_erasure should not be defined before c++2b"
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_assume_aligned
 #     error "__cpp_lib_assume_aligned should be defined in c++20"
@@ -2442,6 +2580,10 @@
 #   error "__cpp_lib_constexpr_tuple should have the value 201811L in c++20"
 # endif
 
+# ifdef __cpp_lib_constexpr_typeinfo
+#   error "__cpp_lib_constexpr_typeinfo should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_constexpr_utility
 #   error "__cpp_lib_constexpr_utility should be defined in c++20"
 # endif
@@ -2652,6 +2794,10 @@
 #   error "__cpp_lib_invoke should have the value 201411L in c++20"
 # endif
 
+# ifdef __cpp_lib_invoke_r
+#   error "__cpp_lib_invoke_r should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_is_aggregate
 #   error "__cpp_lib_is_aggregate should be defined in c++20"
 # endif
@@ -2849,6 +2995,10 @@
 #   error "__cpp_lib_monadic_optional should not be defined before c++2b"
 # endif
 
+# ifdef __cpp_lib_move_only_function
+#   error "__cpp_lib_move_only_function should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_node_extract
 #   error "__cpp_lib_node_extract should be defined in c++20"
 # endif
@@ -2884,6 +3034,10 @@
 #   error "__cpp_lib_optional should have the value 201606L in c++20"
 # endif
 
+# ifdef __cpp_lib_out_ptr
+#   error "__cpp_lib_out_ptr should not be defined before c++2b"
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_parallel_algorithm
 #     error "__cpp_lib_parallel_algorithm should be defined in c++20"
@@ -2930,6 +3084,14 @@
 #   endif
 # endif
 
+# ifdef __cpp_lib_ranges_starts_ends_with
+#   error "__cpp_lib_ranges_starts_ends_with should not be defined before c++2b"
+# endif
+
+# ifdef __cpp_lib_ranges_zip
+#   error "__cpp_lib_ranges_zip should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_raw_memory_algorithms
 #   error "__cpp_lib_raw_memory_algorithms should be defined in c++20"
 # endif
@@ -3065,6 +3227,10 @@
 #   error "__cpp_lib_span should have the value 202002L in c++20"
 # endif
 
+# ifdef __cpp_lib_spanstream
+#   error "__cpp_lib_spanstream should not be defined before c++2b"
+# endif
+
 # ifndef __cpp_lib_ssize
 #   error "__cpp_lib_ssize should be defined in c++20"
 # endif
@@ -3190,6 +3356,13 @@
 #   error "__cpp_lib_tuples_by_type should have the value 201304L in c++20"
 # endif
 
+# ifndef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should be defined in c++20"
+# endif
+# if __cpp_lib_type_identity != 201806L
+#   error "__cpp_lib_type_identity should have the value 201806L in c++20"
+# endif
+
 # ifndef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should be defined in c++20"
 # endif
@@ -3241,6 +3414,19 @@
 #   error "__cpp_lib_addressof_constexpr should have the value 201603L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_allocate_at_least
+#     error "__cpp_lib_allocate_at_least should be defined in c++2b"
+#   endif
+#   if __cpp_lib_allocate_at_least != 202106L
+#     error "__cpp_lib_allocate_at_least should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_allocate_at_least
+#     error "__cpp_lib_allocate_at_least should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_allocator_traits_is_always_equal
 #   error "__cpp_lib_allocator_traits_is_always_equal should be defined in c++2b"
 # endif
@@ -3276,6 +3462,19 @@
 #   error "__cpp_lib_as_const should have the value 201510L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should be defined in c++2b"
+#   endif
+#   if __cpp_lib_associative_heterogeneous_erasure != 202110L
+#     error "__cpp_lib_associative_heterogeneous_erasure should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_associative_heterogeneous_erasure
+#     error "__cpp_lib_associative_heterogeneous_erasure should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_assume_aligned
 #     error "__cpp_lib_assume_aligned should be defined in c++2b"
@@ -3574,6 +3773,19 @@
 #   error "__cpp_lib_constexpr_tuple should have the value 201811L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_constexpr_typeinfo
+#     error "__cpp_lib_constexpr_typeinfo should be defined in c++2b"
+#   endif
+#   if __cpp_lib_constexpr_typeinfo != 202106L
+#     error "__cpp_lib_constexpr_typeinfo should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_constexpr_typeinfo
+#     error "__cpp_lib_constexpr_typeinfo should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_constexpr_utility
 #   error "__cpp_lib_constexpr_utility should be defined in c++2b"
 # endif
@@ -3784,6 +3996,19 @@
 #   error "__cpp_lib_invoke should have the value 201411L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_invoke_r
+#     error "__cpp_lib_invoke_r should be defined in c++2b"
+#   endif
+#   if __cpp_lib_invoke_r != 202106L
+#     error "__cpp_lib_invoke_r should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_invoke_r
+#     error "__cpp_lib_invoke_r should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_is_aggregate
 #   error "__cpp_lib_is_aggregate should be defined in c++2b"
 # endif
@@ -3987,6 +4212,19 @@
 #   error "__cpp_lib_monadic_optional should have the value 202110L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_move_only_function
+#     error "__cpp_lib_move_only_function should be defined in c++2b"
+#   endif
+#   if __cpp_lib_move_only_function != 202110L
+#     error "__cpp_lib_move_only_function should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_move_only_function
+#     error "__cpp_lib_move_only_function should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_node_extract
 #   error "__cpp_lib_node_extract should be defined in c++2b"
 # endif
@@ -4022,6 +4260,19 @@
 #   error "__cpp_lib_optional should have the value 201606L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_out_ptr
+#     error "__cpp_lib_out_ptr should be defined in c++2b"
+#   endif
+#   if __cpp_lib_out_ptr != 202106L
+#     error "__cpp_lib_out_ptr should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_out_ptr
+#     error "__cpp_lib_out_ptr should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # if !defined(_LIBCPP_VERSION)
 #   ifndef __cpp_lib_parallel_algorithm
 #     error "__cpp_lib_parallel_algorithm should be defined in c++2b"
@@ -4068,6 +4319,32 @@
 #   endif
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_starts_ends_with
+#     error "__cpp_lib_ranges_starts_ends_with should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_starts_ends_with != 202106L
+#     error "__cpp_lib_ranges_starts_ends_with should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_starts_ends_with
+#     error "__cpp_lib_ranges_starts_ends_with should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should be defined in c++2b"
+#   endif
+#   if __cpp_lib_ranges_zip != 202110L
+#     error "__cpp_lib_ranges_zip should have the value 202110L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_ranges_zip
+#     error "__cpp_lib_ranges_zip should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_raw_memory_algorithms
 #   error "__cpp_lib_raw_memory_algorithms should be defined in c++2b"
 # endif
@@ -4203,6 +4480,19 @@
 #   error "__cpp_lib_span should have the value 202002L in c++2b"
 # endif
 
+# if !defined(_LIBCPP_VERSION)
+#   ifndef __cpp_lib_spanstream
+#     error "__cpp_lib_spanstream should be defined in c++2b"
+#   endif
+#   if __cpp_lib_spanstream != 202106L
+#     error "__cpp_lib_spanstream should have the value 202106L in c++2b"
+#   endif
+# else // _LIBCPP_VERSION
+#   ifdef __cpp_lib_spanstream
+#     error "__cpp_lib_spanstream should not be defined because it is unimplemented in libc++!"
+#   endif
+# endif
+
 # ifndef __cpp_lib_ssize
 #   error "__cpp_lib_ssize should be defined in c++2b"
 # endif
@@ -4352,6 +4642,13 @@
 #   error "__cpp_lib_tuples_by_type should have the value 201304L in c++2b"
 # endif
 
+# ifndef __cpp_lib_type_identity
+#   error "__cpp_lib_type_identity should be defined in c++2b"
+# endif
+# if __cpp_lib_type_identity != 201806L
+#   error "__cpp_lib_type_identity should have the value 201806L in c++2b"
+# endif
+
 # ifndef __cpp_lib_type_trait_variable_templates
 #   error "__cpp_lib_type_trait_variable_templates should be defined in c++2b"
 # endif

diff  --git a/libcxx/utils/generate_feature_test_macro_components.py b/libcxx/utils/generate_feature_test_macro_components.py
index a6e9023e30be..92de7b3b1284 100755
--- a/libcxx/utils/generate_feature_test_macro_components.py
+++ b/libcxx/utils/generate_feature_test_macro_components.py
@@ -66,6 +66,11 @@ def add_version_header(tc):
     "name": "__cpp_lib_addressof_constexpr",
     "values": { "c++17": 201603 },
     "headers": ["memory"],
+  }, {
+    "name": "__cpp_lib_allocate_at_least",
+    "values": { "c++2b": 202106 },
+    "headers": ["memory"],
+    "unimplemented": True,
   }, {
     "name": "__cpp_lib_allocator_traits_is_always_equal",
     "values": { "c++17": 201411 },
@@ -86,6 +91,11 @@ def add_version_header(tc):
     "name": "__cpp_lib_as_const",
     "values": { "c++17": 201510 },
     "headers": ["utility"],
+  }, {
+    "name": "__cpp_lib_associative_heterogeneous_erasure",
+    "values": { "c++2b": 202110 },
+    "headers": ["map", "set", "unordered_map", "unordered_set"],
+    "unimplemented": True,
   }, {
     "name": "__cpp_lib_assume_aligned",
     "values": { "c++20": 201811 },
@@ -235,6 +245,11 @@ def add_version_header(tc):
     "name": "__cpp_lib_constexpr_tuple",
     "values": { "c++20": 201811 },
     "headers": ["tuple"],
+  }, {
+    "name": "__cpp_lib_constexpr_typeinfo",
+    "values": { "c++2b": 202106 },
+    "headers": ["typeinfo"],
+    "unimplemented": True,
   }, {
     "name": "__cpp_lib_constexpr_utility",
     "values": { "c++20": 201811 },
@@ -343,6 +358,11 @@ def add_version_header(tc):
     "name": "__cpp_lib_invoke",
     "values": { "c++17": 201411 },
     "headers": ["functional"],
+  }, {
+    "name": "__cpp_lib_invoke_r",
+    "values": { "c++2b": 202106 },
+    "headers": ["functional"],
+    "unimplemented": True,
   }, {
     "name": "__cpp_lib_is_aggregate",
     "values": { "c++17": 201703 },
@@ -446,6 +466,11 @@ def add_version_header(tc):
     "name": "__cpp_lib_monadic_optional",
     "values": { "c++2b": 202110 },
     "headers": ["optional"],
+  }, {
+    "name": "__cpp_lib_move_only_function",
+    "values": { "c++2b": 202110 },
+    "headers": ["functional"],
+    "unimplemented": True,
   }, {
     "name": "__cpp_lib_node_extract",
     "values": { "c++17": 201606 },
@@ -466,6 +491,11 @@ def add_version_header(tc):
     "name": "__cpp_lib_optional",
     "values": { "c++17": 201606 },
     "headers": ["optional"],
+  }, {
+    "name": "__cpp_lib_out_ptr",
+    "values": { "c++2b": 202106 },
+    "headers": ["memory"],
+    "unimplemented": True,
   }, {
     "name": "__cpp_lib_parallel_algorithm",
     "values": { "c++17": 201603 },
@@ -485,6 +515,16 @@ def add_version_header(tc):
     "values": { "c++20": 201811 },
     "headers": ["algorithm", "functional", "iterator", "memory", "ranges"],
     "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_starts_ends_with",
+    "values": { "c++2b": 202106 },
+    "headers": ["algorithm"],
+    "unimplemented": True,
+  }, {
+    "name": "__cpp_lib_ranges_zip",
+    "values": { "c++2b": 202110 },
+    "headers": ["ranges", "tuple", "utility"],
+    "unimplemented": True,
   }, {
     "name": "__cpp_lib_raw_memory_algorithms",
     "values": { "c++17": 201606 },
@@ -553,6 +593,11 @@ def add_version_header(tc):
     "name": "__cpp_lib_span",
     "values": { "c++20": 202002 },
     "headers": ["span"],
+  }, {
+    "name": "__cpp_lib_spanstream",
+    "values": { "c++2b": 202106 },
+    "headers": ["spanstream"],
+    "unimplemented": True,
   }, {
     "name": "__cpp_lib_ssize",
     "values": { "c++20": 201902 },
@@ -626,6 +671,10 @@ def add_version_header(tc):
     "name": "__cpp_lib_tuples_by_type",
     "values": { "c++14": 201304 },
     "headers": ["tuple", "utility"],
+  }, {
+    "name": "__cpp_lib_type_identity",
+    "values": { "c++20": 201806 },
+    "headers": ["type_traits"],
   }, {
     "name": "__cpp_lib_type_trait_variable_templates",
     "values": { "c++17": 201510 },


        


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