diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt index c8e6d28584623..2f8be540e73e2 100644 --- a/libcxx/include/CMakeLists.txt +++ b/libcxx/include/CMakeLists.txt @@ -535,6 +535,7 @@ set(files __locale_dir/time.h __locale_dir/wbuffer_convert.h __locale_dir/wstring_convert.h + __log_hardening_failure __math/abs.h __math/copysign.h __math/error_functions.h diff --git a/libcxx/include/__configuration/availability.h b/libcxx/include/__configuration/availability.h index ae58e36b508b4..2782ddb509eab 100644 --- a/libcxx/include/__configuration/availability.h +++ b/libcxx/include/__configuration/availability.h @@ -304,6 +304,11 @@ #define _LIBCPP_AVAILABILITY_HAS_VERBOSE_ABORT _LIBCPP_INTRODUCED_IN_LLVM_15 #define _LIBCPP_AVAILABILITY_VERBOSE_ABORT _LIBCPP_INTRODUCED_IN_LLVM_15_ATTRIBUTE +// This controls whether the library provides a function to log errors without terminating the program (used in +// particular by the `observe` assertion semantic). +#define _LIBCPP_AVAILABILITY_HAS_LOG_HARDENING_FAILURE _LIBCPP_INTRODUCED_IN_LLVM_21 +#define _LIBCPP_AVAILABILITY_LOG_HARDENING_FAILURE _LIBCPP_INTRODUCED_IN_LLVM_21_ATTRIBUTE + // This controls the availability of the C++17 std::pmr library, // which is implemented in large part in the built library. // diff --git a/libcxx/include/__log_hardening_failure b/libcxx/include/__log_hardening_failure new file mode 100644 index 0000000000000..a1c11252131c4 --- /dev/null +++ b/libcxx/include/__log_hardening_failure @@ -0,0 +1,45 @@ +// -*- 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___LOG_HARDENING_FAILURE +#define _LIBCPP___LOG_HARDENING_FAILURE + +#include <__config> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +# pragma GCC system_header +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +// This function should never be called directly from the code -- it should only be called through the +// `_LIBCPP_LOG_HARDENING_FAILURE` macro. +_LIBCPP_AVAILABILITY_LOG_HARDENING_FAILURE _LIBCPP_EXPORTED_FROM_ABI void +__log_hardening_failure(const char* __message) _NOEXCEPT; + +// _LIBCPP_LOG_HARDENING_FAILURE(message) +// +// This macro is used to log an error without terminating the program (as is the case for hardening failures if the +// `observe` assertion semantic is used, for example). + +#if !defined(_LIBCPP_LOG_HARDENING_FAILURE) + +# if !_LIBCPP_AVAILABILITY_HAS_LOG_HARDENING_FAILURE +// The decltype is there to suppress -Wunused warnings in this configuration. +void __use(const char*); +# define _LIBCPP_LOG_HARDENING_FAILURE(__message) (decltype(::std::__use(__message))()) +# else +# define _LIBCPP_LOG_HARDENING_FAILURE(__message) ::std::__log_hardening_failure(__message) +# endif + +#endif // !defined(_LIBCPP_LOG_HARDENING_FAILURE) + +_LIBCPP_END_NAMESPACE_STD + +#endif // _LIBCPP___LOG_HARDENING_FAILURE diff --git a/libcxx/include/module.modulemap.in b/libcxx/include/module.modulemap.in index 45b9c72a05b82..6130d340f143d 100644 --- a/libcxx/include/module.modulemap.in +++ b/libcxx/include/module.modulemap.in @@ -2353,6 +2353,9 @@ module std [system] { header "__std_mbstate_t.h" export * } + module log_hardening_failure { + header "__log_hardening_failure" + } module verbose_abort { header "__verbose_abort" } diff --git a/libcxx/lib/abi/CHANGELOG.TXT b/libcxx/lib/abi/CHANGELOG.TXT index 8c1841648f821..c8a5cd2505394 100644 --- a/libcxx/lib/abi/CHANGELOG.TXT +++ b/libcxx/lib/abi/CHANGELOG.TXT @@ -36,6 +36,14 @@ Version 21.0 ------------- Symbol added: _ZNSt3__113__hash_memoryEPKvm +* [libc++][hardening] Introduce a dylib function to log hardening errors. + + This patch added a function to log hardening failures to the dylib. + + All platforms + ------------- + Symbol added: _ZNSt3__123__log_hardening_failureEPKc + ------------ Version 20.0 ------------ diff --git a/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist index 162757c7e37ec..7fbde1567e835 100644 --- a/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist +++ b/libcxx/lib/abi/arm64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist @@ -1581,6 +1581,7 @@ {'is_defined': True, 'name': '__ZNSt3__123__cxx_atomic_notify_oneEPVKv', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__123__libcpp_atomic_monitorEPVKv', 'type': 'FUNC'} +{'is_defined': True, 'name': '__ZNSt3__123__log_hardening_failureEPKc', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__127__from_chars_floating_pointIdEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__127__from_chars_floating_pointIfEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} diff --git a/libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist index 4b6f3548ce495..a911ae83e3cdb 100644 --- a/libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist +++ b/libcxx/lib/abi/i686-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist @@ -1217,6 +1217,7 @@ {'is_defined': True, 'name': '_ZNSt6__ndk123__cxx_atomic_notify_oneEPVKv', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk123__libcpp_atomic_monitorEPVKv', 'type': 'FUNC'} +{'is_defined': True, 'name': '_ZNSt6__ndk123__log_hardening_failureEPKc', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk127__from_chars_floating_pointIdEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk127__from_chars_floating_pointIfEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} diff --git a/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist index 2b85596bd87f6..feda9979c56ae 100644 --- a/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist +++ b/libcxx/lib/abi/powerpc-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist @@ -569,6 +569,7 @@ {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_oneEPVKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'} +{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__log_hardening_failureEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__131__arrive_barrier_algorithm_baseEPNS_24__barrier_algorithm_baseEh', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__132__destroy_barrier_algorithm_baseEPNS_24__barrier_algorithm_baseE', 'storage_mapping_class': 'DS', 'type': 'FUNC'} diff --git a/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist index 6ebdab96ed455..4f67a367f682a 100644 --- a/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist +++ b/libcxx/lib/abi/powerpc64-ibm-aix.libcxxabi.v1.stable.exceptions.nonew.abilist @@ -569,6 +569,7 @@ {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_oneEPVKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIlNS_22__cxx_atomic_base_implIlEEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKv', 'storage_mapping_class': 'DS', 'type': 'FUNC'} +{'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__123__log_hardening_failureEPKc', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__131__arrive_barrier_algorithm_baseEPNS_24__barrier_algorithm_baseEh', 'storage_mapping_class': 'DS', 'type': 'FUNC'} {'import_export': 'EXP', 'is_defined': True, 'name': '_ZNSt3__132__destroy_barrier_algorithm_baseEPNS_24__barrier_algorithm_baseE', 'storage_mapping_class': 'DS', 'type': 'FUNC'} diff --git a/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist index f6f7d7fd8265a..22e74ef3803b3 100644 --- a/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist +++ b/libcxx/lib/abi/x86_64-apple-darwin.libcxxabi.v1.stable.exceptions.nonew.abilist @@ -1580,6 +1580,7 @@ {'is_defined': True, 'name': '__ZNSt3__123__cxx_atomic_notify_oneEPVKv', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIxNS_22__cxx_atomic_base_implIxEEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__123__libcpp_atomic_monitorEPVKv', 'type': 'FUNC'} +{'is_defined': True, 'name': '__ZNSt3__123__log_hardening_failureEPKc', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__127__from_chars_floating_pointEPKcS1_RdNS_12chars_formatE', 'type': 'FUNC'} {'is_defined': True, 'name': '__ZNSt3__127__from_chars_floating_pointEPKcS1_RfNS_12chars_formatE', 'type': 'FUNC'} diff --git a/libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist index 45f3d7c5904e8..15c419d1933d4 100644 --- a/libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist +++ b/libcxx/lib/abi/x86_64-linux-android21.libcxxabi.v1.stable.exceptions.nonew.abilist @@ -1217,6 +1217,7 @@ {'is_defined': True, 'name': '_ZNSt6__ndk123__cxx_atomic_notify_oneEPVKv', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk123__libcpp_atomic_monitorEPVKv', 'type': 'FUNC'} +{'is_defined': True, 'name': '_ZNSt6__ndk123__log_hardening_failureEPKc', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk127__from_chars_floating_pointIdEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt6__ndk127__from_chars_floating_pointIfEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} diff --git a/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist index de8cf6deef1df..fe530d7ff06ee 100644 --- a/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist +++ b/libcxx/lib/abi/x86_64-unknown-freebsd.libcxxabi.v1.stable.exceptions.nonew.abilist @@ -1231,6 +1231,7 @@ {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_oneEPVKv', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIlNS_22__cxx_atomic_base_implIlEEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKv', 'type': 'FUNC'} +{'is_defined': True, 'name': '_ZNSt3__123__log_hardening_failureEPKc', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__127__from_chars_floating_pointIdEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__127__from_chars_floating_pointIfEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} diff --git a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist index 8c55c4385f6f6..d1627998bbd47 100644 --- a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist +++ b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.exceptions.nonew.abilist @@ -1229,6 +1229,7 @@ {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_oneEPVKv', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKv', 'type': 'FUNC'} +{'is_defined': True, 'name': '_ZNSt3__123__log_hardening_failureEPKc', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__127__from_chars_floating_pointIdEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__127__from_chars_floating_pointIfEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} diff --git a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist index 51caa07a74330..ba4756ac4a49b 100644 --- a/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist +++ b/libcxx/lib/abi/x86_64-unknown-linux-gnu.libcxxabi.v1.stable.noexceptions.nonew.abilist @@ -1200,6 +1200,7 @@ {'is_defined': True, 'name': '_ZNSt3__123__cxx_atomic_notify_oneEPVKv', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKNS_17__cxx_atomic_implIiNS_22__cxx_atomic_base_implIiEEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__123__libcpp_atomic_monitorEPVKv', 'type': 'FUNC'} +{'is_defined': True, 'name': '_ZNSt3__123__log_hardening_failureEPKc', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__125notify_all_at_thread_exitERNS_18condition_variableENS_11unique_lockINS_5mutexEEE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__127__from_chars_floating_pointIdEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} {'is_defined': True, 'name': '_ZNSt3__127__from_chars_floating_pointIfEENS_19__from_chars_resultIT_EEPKcS5_NS_12chars_formatE', 'type': 'FUNC'} diff --git a/libcxx/src/CMakeLists.txt b/libcxx/src/CMakeLists.txt index 97fe57a5f24f8..d22580ff2f3ff 100644 --- a/libcxx/src/CMakeLists.txt +++ b/libcxx/src/CMakeLists.txt @@ -31,6 +31,7 @@ set(LIBCXX_SOURCES include/to_chars_floating_point.h include/from_chars_floating_point.h memory.cpp + log_hardening_failure.cpp memory_resource.cpp new_handler.cpp new_helpers.cpp diff --git a/libcxx/src/log_hardening_failure.cpp b/libcxx/src/log_hardening_failure.cpp new file mode 100644 index 0000000000000..2759fe68486ec --- /dev/null +++ b/libcxx/src/log_hardening_failure.cpp @@ -0,0 +1,50 @@ +//===----------------------------------------------------------------------===// +// +// 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 <__log_hardening_failure> +#include + +#ifdef __BIONIC__ +# include +extern "C" void android_set_abort_message(const char* msg); +#endif // __BIONIC__ + +#if defined(__APPLE__) && __has_include() +# include +# include +#endif + +_LIBCPP_BEGIN_NAMESPACE_STD + +void __log_hardening_failure(const char* message) noexcept { + // Always log the message to `stderr` in case the platform-specific system calls fail. + fputs(message, stderr); + + // On Apple platforms, use the `os_fault_with_payload` OS function that simulates a crash. +#if defined(__APPLE__) && __has_include() && !TARGET_OS_SIMULATOR + os_fault_with_payload( + /*reason_namespace=*/OS_REASON_SECURITY, + /*reason_code=*/0, + /*payload=*/nullptr, + /*payload_size=*/0, + /*reason_string=*/message, + /*reason_flags=*/0); + +#elif defined(__BIONIC__) + // Show error in tombstone. + android_set_abort_message(message); + + // Show error in logcat. + openlog("libc++", 0, 0); + syslog(LOG_CRIT, "%s", message); + closelog(); +#endif +} + +_LIBCPP_END_NAMESPACE_STD diff --git a/libcxx/test/libcxx/assertions/log_hardening_failure.pass.cpp b/libcxx/test/libcxx/assertions/log_hardening_failure.pass.cpp new file mode 100644 index 0000000000000..d189a56d61d08 --- /dev/null +++ b/libcxx/test/libcxx/assertions/log_hardening_failure.pass.cpp @@ -0,0 +1,26 @@ +//===----------------------------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// + +// Basic smoke test for `__log_hardening_failure`. +// XFAIL: availability-log_hardening_failure-missing + +// UNSUPPORTED: FROZEN-CXX03-HEADERS-FIXME + +#include <__log_hardening_failure> + +#include "test_macros.h" + +ASSERT_NOEXCEPT(std::__log_hardening_failure("")); + +int main(int, char**) { + std::__log_hardening_failure("Some message"); + // It's difficult to properly test platform-specific logging behavior of the function; just make sure it exists and + // can be called at runtime. + + return 0; +} diff --git a/libcxx/utils/libcxx/test/features.py b/libcxx/utils/libcxx/test/features.py index 0cb81546665d4..473e0dec413e4 100644 --- a/libcxx/utils/libcxx/test/features.py +++ b/libcxx/utils/libcxx/test/features.py @@ -926,4 +926,12 @@ def check_gdb(cfg): cfg.available_features, ), ), + # Tests that require __log_hardening_failure support in the built library + Feature( + name="availability-log_hardening_failure-missing", + when=lambda cfg: BooleanExpression.evaluate( + "!libcpp-has-no-availability-markup && (stdlib=apple-libc++ && !_target-has-llvm-21)", + cfg.available_features, + ), + ), ]