[libc++] Remove the pointer safety functions from the dylib (#117390) The pointer safety functions were never implemented by anyone in a non-trivial way, which lead us to removing them entirely from the headers when they were removed in C++23. This also means that just about nobody ever called these functions, especially not in production code. Because of that, we expect there to be no references in the wild to the functions in the dylib. Because of that, this patch removes the symbols from the dylib. GitOrigin-RevId: 6cbc37383f4ad32474a59976df3da0ee53f68fed

diff --git a/docs/ReleaseNotes/20.rst b/docs/ReleaseNotes/20.rst
index d520c46..93d45f5 100644
--- a/docs/ReleaseNotes/20.rst
+++ b/docs/ReleaseNotes/20.rst

@@ -105,6 +105,10 @@
 - The ``_LIBCPP_DISABLE_AVAILABILITY`` macro that was used to force-disable availability markup has now been removed.
   Whether availability markup is used by the library is now solely controlled at configuration-time.
 
+- The pointer safety functions ``declare_reachable``, ``declare_no_pointers``, ``undeclare_no_pointers`` and
+  ``__undeclare_reachable`` have been removed from the library. These functions were never implemented in a non-trivial
+  way, making it very unlikely that any binary depends on them.
+
 Upcoming Deprecations and Removals
 ----------------------------------
 

diff --git a/lib/abi/CHANGELOG.TXT b/lib/abi/CHANGELOG.TXT
index e27eb5f..f630a5a 100644
--- a/lib/abi/CHANGELOG.TXT
+++ b/lib/abi/CHANGELOG.TXT

@@ -16,6 +16,19 @@
 Version 20.0
 ------------
 
+* [libc++] Remove the pointer safety functions from the dylib
+
+  The pointer safety functions were never implemented by anyone in a non-trivial
+  way, which lead us to removing them entirely from the headers when they were
+  removed in C++23. This also means that just about nobody ever called these
+  functions, especially not in production code. Because of that, we expect there
+  to be no references in the wild to the functions in the dylib.
+
+  Symbol removed: _ZNSt3__117declare_reachableEPv
+  Symbol removed: _ZNSt3__119declare_no_pointersEPcm
+  Symbol removed: _ZNSt3__121__undeclare_reachableEPv
+  Symbol removed: _ZNSt3__121undeclare_no_pointersEPcm
+
 * [libcxx][libc] Implements from_chars floating-point
 
   All platforms

diff --git a/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
index 79f999b..63a9872 100644
--- a/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1507,7 +1507,6 @@
 {'is_defined': True, 'name': '__ZNSt3__117bad_function_callD0Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117bad_function_callD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117bad_function_callD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '__ZNSt3__117declare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117iostream_categoryEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
@@ -1561,13 +1560,11 @@
 {'is_defined': True, 'name': '__ZNSt3__119__thread_local_dataEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
-{'is_defined': True, 'name': '__ZNSt3__119declare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__120__get_collation_nameEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEEx', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__120__libcpp_atomic_waitEPVKvx', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__120__throw_system_errorEiPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121__throw_runtime_errorEPKc', 'type': 'FUNC'}
-{'is_defined': True, 'name': '__ZNSt3__121__undeclare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutex4lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutex6unlockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutex8try_lockEv', 'type': 'FUNC'}
@@ -1575,7 +1572,6 @@
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutexD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '__ZNSt3__121undeclare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__122__libcpp_verbose_abortEPKcz', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__123__cxx_atomic_notify_allEPVKv', 'type': 'FUNC'}

diff --git a/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist b/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
index 9efdf11..4bb93b8 100644
--- a/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1143,7 +1143,6 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD0Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt6__ndk117declare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117iostream_categoryEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
@@ -1197,13 +1196,11 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk119__thread_local_dataEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt6__ndk119declare_no_pointersEPcj', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk120__get_collation_nameEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEEi', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk120__libcpp_atomic_waitEPVKvi', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk120__throw_system_errorEiPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121__throw_runtime_errorEPKc', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt6__ndk121__undeclare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutex4lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutex6unlockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutex8try_lockEv', 'type': 'FUNC'}
@@ -1211,7 +1208,6 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutexD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt6__ndk121undeclare_no_pointersEPcj', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk122__libcpp_verbose_abortEPKcz', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk123__cxx_atomic_notify_allEPVKv', 'type': 'FUNC'}

diff --git a/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
index 7fde4b9..0fbe2aa 100644
--- a/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -502,7 +502,6 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
-{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117declare_reachableEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117iostream_categoryEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
@@ -550,13 +549,11 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_weak_countD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_weak_countD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__thread_local_dataEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
-{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119declare_no_pointersEPcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__120__get_collation_nameEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEEi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKvi', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__120__throw_system_errorEiPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121__throw_runtime_errorEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
-{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121__undeclare_reachableEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex4lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex6unlockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex8try_lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
@@ -564,7 +561,6 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
-{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121undeclare_no_pointersEPcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_oneEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}

diff --git a/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
index da30346..bba9e49 100644
--- a/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -502,7 +502,6 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD0Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117bad_function_callD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
-{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117declare_reachableEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117iostream_categoryEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
@@ -550,13 +549,11 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_weak_countD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__shared_weak_countD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119__thread_local_dataEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
-{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__119declare_no_pointersEPcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__120__get_collation_nameEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIlNS_22__cxx_atomic_base_implIlEEEEl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKvl', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__120__throw_system_errorEiPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121__throw_runtime_errorEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
-{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121__undeclare_reachableEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex4lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex6unlockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex8try_lockEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
@@ -564,7 +561,6 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
-{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__121undeclare_no_pointersEPcm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIlNS_22__cxx_atomic_base_implIlEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_oneEPVKNS_17__cxx_atomic_implIlNS_22__cxx_atomic_base_implIlEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'}

diff --git a/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
index e1dc6e7..c004538 100644
--- a/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1507,7 +1507,6 @@
 {'is_defined': True, 'name': '__ZNSt3__117bad_function_callD0Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117bad_function_callD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117bad_function_callD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '__ZNSt3__117declare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117iostream_categoryEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
@@ -1561,13 +1560,11 @@
 {'is_defined': True, 'name': '__ZNSt3__119__thread_local_dataEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
-{'is_defined': True, 'name': '__ZNSt3__119declare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__120__get_collation_nameEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEEx', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__120__libcpp_atomic_waitEPVKvx', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__120__throw_system_errorEiPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121__throw_runtime_errorEPKc', 'type': 'FUNC'}
-{'is_defined': True, 'name': '__ZNSt3__121__undeclare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutex4lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutex6unlockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutex8try_lockEv', 'type': 'FUNC'}
@@ -1575,7 +1572,6 @@
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__121recursive_timed_mutexD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '__ZNSt3__121undeclare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__122__libcpp_verbose_abortEPKcz', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__123__cxx_atomic_notify_allEPVKv', 'type': 'FUNC'}

diff --git a/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist b/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
index ceeeffe..80fdddd 100644
--- a/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1143,7 +1143,6 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD0Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117bad_function_callD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt6__ndk117declare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117iostream_categoryEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
@@ -1197,13 +1196,11 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk119__thread_local_dataEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt6__ndk119declare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk120__get_collation_nameEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEEi', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk120__libcpp_atomic_waitEPVKvi', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk120__throw_system_errorEiPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121__throw_runtime_errorEPKc', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt6__ndk121__undeclare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutex4lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutex6unlockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutex8try_lockEv', 'type': 'FUNC'}
@@ -1211,7 +1208,6 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk121recursive_timed_mutexD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt6__ndk121undeclare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk122__libcpp_verbose_abortEPKcz', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk123__cxx_atomic_notify_allEPVKv', 'type': 'FUNC'}

diff --git a/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist b/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
index d3670d2..3225e5e 100644
--- a/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1158,7 +1158,6 @@
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD0Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__117declare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117iostream_categoryEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
@@ -1212,13 +1211,11 @@
 {'is_defined': True, 'name': '_ZNSt3__119__thread_local_dataEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__119declare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__get_collation_nameEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIlNS_22__cxx_atomic_base_implIlEEEEl', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKvl', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__throw_system_errorEiPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121__throw_runtime_errorEPKc', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__121__undeclare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex4lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex6unlockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex8try_lockEv', 'type': 'FUNC'}
@@ -1226,7 +1223,6 @@
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__121undeclare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__122__libcpp_verbose_abortEPKcz', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIlNS_22__cxx_atomic_base_implIlEEEE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKv', 'type': 'FUNC'}

diff --git a/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist b/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
index 2c21a03..ec82170 100644
--- a/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist
+++ b/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -1156,7 +1156,6 @@
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD0Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__117declare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117iostream_categoryEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
@@ -1210,13 +1209,11 @@
 {'is_defined': True, 'name': '_ZNSt3__119__thread_local_dataEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__119declare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__get_collation_nameEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEEi', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKvi', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__throw_system_errorEiPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121__throw_runtime_errorEPKc', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__121__undeclare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex4lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex6unlockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex8try_lockEv', 'type': 'FUNC'}
@@ -1224,7 +1221,6 @@
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__121undeclare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__122__libcpp_verbose_abortEPKcz', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKv', 'type': 'FUNC'}

diff --git a/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist b/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist
index 0d4c509..6e82c97 100644
--- a/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist
+++ b/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist

@@ -1127,7 +1127,6 @@
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD0Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117bad_function_callD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__117declare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117iostream_categoryEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb0EE4initEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__117moneypunct_bynameIcLb1EE4initEPKc', 'type': 'FUNC'}
@@ -1181,13 +1180,11 @@
 {'is_defined': True, 'name': '_ZNSt3__119__thread_local_dataEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__119declare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__get_collation_nameEPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEEi', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__libcpp_atomic_waitEPVKvi', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__120__throw_system_errorEiPKc', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121__throw_runtime_errorEPKc', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__121__undeclare_reachableEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex4lockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex6unlockEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutex8try_lockEv', 'type': 'FUNC'}
@@ -1195,7 +1192,6 @@
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__121recursive_timed_mutexD2Ev', 'type': 'FUNC'}
-{'is_defined': True, 'name': '_ZNSt3__121undeclare_no_pointersEPcm', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__122__libcpp_verbose_abortEPKcz', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_allEPVKv', 'type': 'FUNC'}

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index cce8b89..6d60fa1 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt

@@ -32,7 +32,6 @@
   include/ryu/ryu.h
   include/to_chars_floating_point.h
   include/from_chars_floating_point.h
-  legacy_pointer_safety.cpp
   memory.cpp
   memory_resource.cpp
   new_handler.cpp

diff --git a/src/legacy_pointer_safety.cpp b/src/legacy_pointer_safety.cpp
deleted file mode 100644
index a9361ca..0000000
--- a/src/legacy_pointer_safety.cpp
+++ /dev/null

@@ -1,23 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#include <__config>
-#include <memory>
-
-// Support for garbage collection was removed in C++23 by https://wg21.link/P2186R2. Libc++ implements
-// that removal as an extension in all Standard versions. However, we still define the functions that
-// were once part of the library's ABI for backwards compatibility.
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-_LIBCPP_EXPORTED_FROM_ABI void declare_reachable(void*) {}
-_LIBCPP_EXPORTED_FROM_ABI void declare_no_pointers(char*, size_t) {}
-_LIBCPP_EXPORTED_FROM_ABI void undeclare_no_pointers(char*, size_t) {}
-_LIBCPP_EXPORTED_FROM_ABI void* __undeclare_reachable(void* p) { return p; }
-
-_LIBCPP_END_NAMESPACE_STD