WIP - [libc++][debugging] P2546R5: Debugging support & P2810R4: is_debugger_present is_replaceable

libcxx/docs/FeatureTestMacroTable.rst

@@ -408,7 +408,7 @@ Status
     ---------------------------------------------------------- -----------------
     ``__cpp_lib_copyable_function``                            *unimplemented*
     ---------------------------------------------------------- -----------------
-    ``__cpp_lib_debugging``                                    *unimplemented*
+    ``__cpp_lib_debugging``                                    ``202311L``
     ---------------------------------------------------------- -----------------
     ``__cpp_lib_default_template_type_for_algorithm_values``   *unimplemented*
     ---------------------------------------------------------- -----------------

libcxx/docs/ReleaseNotes/19.rst

@@ -47,6 +47,8 @@ Implemented Papers
 - P2872R3 - Remove ``wstring_convert`` From C++26
 - P3142R0 - Printing Blank Lines with ``println`` (as DR against C++23)
 - P2944R3 - Comparisons for ``reference_wrapper`` (comparison operators for ``reference_wrapper`` only)
+- P2546R5 - Debugging support (Picolib support is not implemented)
+- P2810R4 - ``is_debuger_present`` is_replaceable
 - P2302R4 - ``std::ranges::contains``
 - P1659R3 - ``std::ranges::starts_with`` and ``std::ranges::ends_with``
 - P3029R1 - Better ``mdspan``'s CTAD

libcxx/docs/Status/Cxx2c.rst

@@ -42,6 +42,7 @@ Paper Status
    .. [#note-P2510R3] This paper is applied as DR against C++20. (MSVC STL and libstdc++ will do the same.)
    .. [#note-P3142R0] This paper is applied as DR against C++23. (MSVC STL and libstdc++ will do the same.)
    .. [#note-P2944R3] Implemented comparisons for ``reference_wrapper`` only.
+   .. [#note-P2546R5] Picolib support is not implemented.
 
 .. _issues-status-cxx2c:
 

libcxx/docs/Status/Cxx2cPapers.csv

@@ -29,7 +29,7 @@
 "","","","","","",""
 "`P0543R3 <https://wg21.link/P0543R3>`__","LWG","Saturation arithmetic","Kona November 2023","|Complete|","18.0",""
 "`P2407R5 <https://wg21.link/P2407R5>`__","LWG","Freestanding Library: Partial Classes","Kona November 2023","","",""
-"`P2546R5 <https://wg21.link/P2546R5>`__","LWG","Debugging Support","Kona November 2023","","",""
+"`P2546R5 <https://wg21.link/P2546R5>`__","LWG","Debugging Support","Kona November 2023","|Partial| [#note-P2546R5]_","19.0",""
 "`P2905R2 <https://wg21.link/P2905R2>`__","LWG","Runtime format strings","Kona November 2023","|Complete|","18.0","|format| |DR|"
 "`P2918R2 <https://wg21.link/P2918R2>`__","LWG","Runtime format strings II","Kona November 2023","|Complete|","18.0","|format|"
 "`P2909R4 <https://wg21.link/P2909R4>`__","LWG","Fix formatting of code units as integers (Dude, where’s my ``char``?)","Kona November 2023","|Complete|","18.0","|format| |DR|"

libcxx/include/CMakeLists.txt

@@ -918,6 +918,7 @@ set(files
   cuchar
   cwchar
   cwctype
+  debugging
   deque
   errno.h
   exception

libcxx/include/__availability

@@ -352,6 +352,11 @@
 #define _LIBCPP_AVAILABILITY_HAS_BAD_EXPECTED_ACCESS_KEY_FUNCTION _LIBCPP_INTRODUCED_IN_LLVM_19
 #define _LIBCPP_AVAILABILITY_BAD_EXPECTED_ACCESS_KEY_FUNCTION _LIBCPP_INTRODUCED_IN_LLVM_19_ATTRIBUTE
 
+// This controls the availability of the C++26 debugging functions.
+// The platform specific implementation is built in the library.
+#define _LIBCPP_AVAILABILITY_HAS_DEBUGGING _LIBCPP_INTRODUCED_IN_LLVM_19
+#define _LIBCPP_AVAILABILITY_DEBUGGING _LIBCPP_INTRODUCED_IN_LLVM_19_ATTRIBUTE
+
 // Define availability attributes that depend on _LIBCPP_HAS_NO_EXCEPTIONS.
 // Those are defined in terms of the availability attributes above, and
 // should not be vendor-specific.

libcxx/include/__std_clang_module

@@ -81,6 +81,7 @@
 #if !defined(_LIBCPP_HAS_NO_WIDE_CHARACTERS)
 #  include <cwctype>
 #endif
+#include <debugging>
 #include <deque>
 #include <errno.h>
 #include <exception>

libcxx/include/debugging

@@ -0,0 +1,58 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_DEBUGGING
+#define _LIBCPP_DEBUGGING
+
+/*
+// all freestanding
+namespace std {
+  // [debugging.utility], utility
+  void breakpoint() noexcept;
+  void breakpoint_if_debugging() noexcept;
+  bool is_debugger_present() noexcept;
+}
+*/
+
+#include <__config>
+#include <version>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if _LIBCPP_STD_VER >= 26
+
+_LIBCPP_AVAILABILITY_DEBUGGING _LIBCPP_EXPORTED_FROM_ABI void __breakpoint() noexcept;
+
+_LIBCPP_AVAILABILITY_DEBUGGING _LIBCPP_HIDE_FROM_ABI inline void breakpoint() noexcept {
+#  if __has_builtin(__builtin_debugtrap)
+  __builtin_debugtrap();
+#  elif defined(_MSC_VER)
+  __debugbreak();
+#  else
+  __breakpoint();
+#  endif
+}
+
+_LIBCPP_AVAILABILITY_DEBUGGING _LIBCPP_EXPORTED_FROM_ABI _LIBCPP_OVERRIDABLE_FUNC_VIS bool
+is_debugger_present() noexcept;
+
+_LIBCPP_AVAILABILITY_DEBUGGING _LIBCPP_HIDE_FROM_ABI inline void breakpoint_if_debugging() noexcept {
+  if (is_debugger_present())
+    breakpoint();
+}
+
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_DEBUGGING

libcxx/include/module.modulemap

@@ -59,6 +59,10 @@ module std_coroutine [system] {
   header "coroutine"
   export *
 }
+module std_debugging [system] {
+  header "debugging"
+  export *
+}
 module std_deque [system] {
   header "deque"
   export *

libcxx/include/version

@@ -504,7 +504,9 @@ __cpp_lib_void_t                                        201411L <type_traits>
 # define __cpp_lib_bitset                               202306L
 // # define __cpp_lib_constrained_equality                 202403L
 // # define __cpp_lib_copyable_function                    202306L
-// # define __cpp_lib_debugging                            202311L
+# if _LIBCPP_STD_VER >= 26 && defined(_LIBCPP_AVAILABILITY_HAS_DEBUGGING)
+#   define __cpp_lib_debugging                          202311L
+# endif
 // # define __cpp_lib_default_template_type_for_algorithm_values 202403L
 // # define __cpp_lib_freestanding_algorithm               202311L
 // # define __cpp_lib_freestanding_array                   202311L

libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -965,6 +965,7 @@
 {'is_defined': True, 'name': '__ZNSt3__111timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__111timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__111timed_mutexD2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt3__112__breakpointEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__112__do_nothingEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__112__get_sp_mutEPKv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__112__next_primeEm', 'type': 'FUNC'}
@@ -1564,6 +1565,7 @@
 {'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__119is_debugger_presentEv', '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'}

libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -599,6 +599,7 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk111timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk111timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk111timed_mutexD2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt6__ndk112__breakpointEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk112__do_nothingEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk112__get_sp_mutEPKv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk112__next_primeEj', 'type': 'FUNC'}
@@ -1198,6 +1199,7 @@
 {'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__ndk119is_debugger_presentEv', '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'}

libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -324,6 +324,7 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111timed_mutexC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111timed_mutexD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111timed_mutexD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112__breakpointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112__do_nothingEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112__get_sp_mutEPKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112__next_primeEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
@@ -1714,6 +1715,7 @@
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__119is_debugger_presentEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__122__libcpp_verbose_abortEPKcz', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__14__fs10filesystem16_FilesystemClock9is_steadyE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__14__fs10filesystem4path19preferred_separatorE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}

libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -324,6 +324,7 @@
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111timed_mutexC2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111timed_mutexD1Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__111timed_mutexD2Ev', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112__breakpointEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112__do_nothingEPv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112__get_sp_mutEPKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__112__next_primeEm', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
@@ -1714,6 +1715,7 @@
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__118basic_stringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__119basic_istringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__119basic_ostringstreamIcNS_11char_traitsIcEENS_9allocatorIcEEEaSEOS5_', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
+{'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__119is_debugger_presentEv', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__122__libcpp_verbose_abortEPKcz', 'storage_mapping_class': 'DS', 'type': 'FUNC'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__14__fs10filesystem16_FilesystemClock9is_steadyE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}
 {'import_export': 'wEXP', 'is_defined': True, 'name': '_ZNSt3__14__fs10filesystem4path19preferred_separatorE', 'storage_mapping_class': 'RO', 'type': 'OBJECT'}

libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -976,6 +976,7 @@
 {'is_defined': True, 'name': '__ZNSt3__112__rs_defaultD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__112__rs_defaultD2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__112__rs_defaultclEv', 'type': 'FUNC'}
+{'is_defined': True, 'name': '__ZNSt3__112__breakpointEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__112bad_weak_ptrD0Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__112bad_weak_ptrD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '__ZNSt3__112bad_weak_ptrD2Ev', 'type': 'FUNC'}
@@ -1564,6 +1565,7 @@
 {'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__119is_debugger_presentEv', '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'}

libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -599,6 +599,7 @@
 {'is_defined': True, 'name': '_ZNSt6__ndk111timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk111timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk111timed_mutexD2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt6__ndk112__breakpointEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk112__do_nothingEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk112__get_sp_mutEPKv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt6__ndk112__next_primeEm', 'type': 'FUNC'}
@@ -1198,6 +1199,7 @@
 {'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__ndk119is_debugger_presentEv', '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'}

libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -613,6 +613,7 @@
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexD2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__112__breakpointEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__do_nothingEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__get_sp_mutEPKv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__next_primeEm', 'type': 'FUNC'}
@@ -1212,6 +1213,7 @@
 {'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__119is_debugger_presentEv', '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'}

libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist

@@ -611,6 +611,7 @@
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexD2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__112__breakpointEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__do_nothingEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__get_sp_mutEPKv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__next_primeEm', 'type': 'FUNC'}
@@ -1210,6 +1211,7 @@
 {'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__119is_debugger_presentEv', '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'}

libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist

@@ -582,6 +582,7 @@
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexC2Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexD1Ev', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__111timed_mutexD2Ev', 'type': 'FUNC'}
+{'is_defined': True, 'name': '_ZNSt3__112__breakpointEv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__do_nothingEPv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__get_sp_mutEPKv', 'type': 'FUNC'}
 {'is_defined': True, 'name': '_ZNSt3__112__next_primeEm', 'type': 'FUNC'}
@@ -1181,6 +1182,7 @@
 {'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__119is_debugger_presentEv', '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'}

libcxx/modules/CMakeLists.txt

@@ -37,6 +37,7 @@ set(LIBCXX_MODULE_STD_SOURCES
   std/cuchar.inc
   std/cwchar.inc
   std/cwctype.inc
+  std/debugging.inc
   std/deque.inc
   std/exception.inc
   std/execution.inc

libcxx/modules/std.compat.cppm.in

@@ -54,9 +54,6 @@ module;
 // into thinking that libc++ provides the header.
 //
 #ifndef _WIN32
-#  if __has_include(<debugging>)
-#    error "please update the header information for <debugging> in headers_not_available in utils/libcxx/header_information.py"
-#  endif // __has_include(<debugging>)
 #  if __has_include(<flat_map>)
 #    error "please update the header information for <flat_map> in headers_not_available in utils/libcxx/header_information.py"
 #  endif // __has_include(<flat_map>)