llvm-project/libcxx/vendor/llvm/default_assertion_handler.in
Konstantin Varlamov 3eee9fc2c4
[libc++][hardening] Introduce assertion semantics. (#149459)
Assertion semantics closely mimic C++26 Contracts evaluation semantics.
This brings our implementation closer in line with C++26 Library Hardening
(one particular benefit is that using the `observe` semantic makes adopting
hardening easier for projects).
2025-07-29 00:19:15 -07:00

65 lines
2.3 KiB
C++

// -*- 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___ASSERTION_HANDLER
#define _LIBCPP___ASSERTION_HANDLER
#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
# include <__cxx03/__config>
# include <__cxx03/__verbose_abort>
# include <__cxx03/__verbose_trap>
#else
# include <__config>
# include <__log_hardening_failure>
# include <__verbose_abort>
# include <__verbose_trap>
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
// Keep the old implementation that doesn't support assertion semantics for backward compatibility with the frozen C++03
// mode.
# if _LIBCPP_HARDENING_MODE == _LIBCPP_HARDENING_MODE_DEBUG
# define _LIBCPP_ASSERTION_HANDLER(message) _LIBCPP_VERBOSE_ABORT("%s", message)
# else
# define _LIBCPP_ASSERTION_HANDLER(message) _LIBCPP_VERBOSE_TRAP(message)
# endif // _LIBCPP_HARDENING_MODE == _LIBCPP_HARDENING_MODE_DEBUG
#else
# if _LIBCPP_ASSERTION_SEMANTIC == _LIBCPP_ASSERTION_SEMANTIC_IGNORE
# define _LIBCPP_ASSERTION_HANDLER(message) ((void)0)
# elif _LIBCPP_ASSERTION_SEMANTIC == _LIBCPP_ASSERTION_SEMANTIC_OBSERVE
# define _LIBCPP_ASSERTION_HANDLER(message) _LIBCPP_LOG_HARDENING_FAILURE(message)
# elif _LIBCPP_ASSERTION_SEMANTIC == _LIBCPP_ASSERTION_SEMANTIC_QUICK_ENFORCE
# define _LIBCPP_ASSERTION_HANDLER(message) _LIBCPP_VERBOSE_TRAP(message)
# elif _LIBCPP_ASSERTION_SEMANTIC == _LIBCPP_ASSERTION_SEMANTIC_ENFORCE
# define _LIBCPP_ASSERTION_HANDLER(message) _LIBCPP_VERBOSE_ABORT("%s", message)
# else
# error _LIBCPP_ASSERTION_SEMANTIC must be set to one of the following values: \
_LIBCPP_ASSERTION_SEMANTIC_IGNORE, \
_LIBCPP_ASSERTION_SEMANTIC_OBSERVE, \
_LIBCPP_ASSERTION_SEMANTIC_QUICK_ENFORCE, \
_LIBCPP_ASSERTION_SEMANTIC_ENFORCE
# endif // _LIBCPP_ASSERTION_SEMANTIC == _LIBCPP_ASSERTION_SEMANTIC_IGNORE
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#endif // _LIBCPP___ASSERTION_HANDLER