[clang][Driver] Support simplified triple versions for config files (#111387)
[llvm-project.git] / libcxx / include / __cxx03 / __assert
blobf6c4d8e4a5d09b6286c0d835713fab13ceeaaa40
1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP___CXX03___ASSERT
11 #define _LIBCPP___CXX03___ASSERT
13 #include <__assertion_handler> // Note: this include is generated by CMake and is potentially vendor-provided.
14 #include <__cxx03/__config>
16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17 #  pragma GCC system_header
18 #endif
20 #define _LIBCPP_ASSERT(expression, message)                                                                            \
21   (__builtin_expect(static_cast<bool>(expression), 1)                                                                  \
22        ? (void)0                                                                                                       \
23        : _LIBCPP_ASSERTION_HANDLER(__FILE__ ":" _LIBCPP_TOSTRING(__LINE__) ": assertion " _LIBCPP_TOSTRING(            \
24              expression) " failed: " message "\n"))
26 // TODO: __builtin_assume can currently inhibit optimizations. Until this has been fixed and we can add
27 //       assumptions without a clear optimization intent, disable that to avoid worsening the code generation.
28 //       See https://discourse.llvm.org/t/llvm-assume-blocks-optimization/71609 for a discussion.
29 #if 0 && __has_builtin(__builtin_assume)
30 #  define _LIBCPP_ASSUME(expression)                                                                                   \
31     (_LIBCPP_DIAGNOSTIC_PUSH _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wassume")                                              \
32          __builtin_assume(static_cast<bool>(expression)) _LIBCPP_DIAGNOSTIC_POP)
33 #else
34 #  define _LIBCPP_ASSUME(expression) ((void)0)
35 #endif
37 // clang-format off
38 // Fast hardening mode checks.
40 #if _LIBCPP_HARDENING_MODE == _LIBCPP_HARDENING_MODE_FAST
42 // Enabled checks.
43 #  define _LIBCPP_ASSERT_VALID_INPUT_RANGE(expression, message)       _LIBCPP_ASSERT(expression, message)
44 #  define _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(expression, message)    _LIBCPP_ASSERT(expression, message)
45 // Disabled checks.
46 // On most modern platforms, dereferencing a null pointer does not lead to an actual memory access.
47 #  define _LIBCPP_ASSERT_NON_NULL(expression, message)                _LIBCPP_ASSUME(expression)
48 // Overlapping ranges will make algorithms produce incorrect results but don't directly lead to a security
49 // vulnerability.
50 #  define _LIBCPP_ASSERT_NON_OVERLAPPING_RANGES(expression, message)  _LIBCPP_ASSUME(expression)
51 #  define _LIBCPP_ASSERT_VALID_DEALLOCATION(expression, message)      _LIBCPP_ASSUME(expression)
52 #  define _LIBCPP_ASSERT_VALID_EXTERNAL_API_CALL(expression, message) _LIBCPP_ASSUME(expression)
53 #  define _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(expression, message)    _LIBCPP_ASSUME(expression)
54 #  define _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(expression, message)  _LIBCPP_ASSUME(expression)
55 #  define _LIBCPP_ASSERT_PEDANTIC(expression, message)                _LIBCPP_ASSUME(expression)
56 #  define _LIBCPP_ASSERT_SEMANTIC_REQUIREMENT(expression, message)    _LIBCPP_ASSUME(expression)
57 #  define _LIBCPP_ASSERT_INTERNAL(expression, message)                _LIBCPP_ASSUME(expression)
58 #  define _LIBCPP_ASSERT_UNCATEGORIZED(expression, message)           _LIBCPP_ASSUME(expression)
60 // Extensive hardening mode checks.
62 #elif _LIBCPP_HARDENING_MODE == _LIBCPP_HARDENING_MODE_EXTENSIVE
64 // Enabled checks.
65 #  define _LIBCPP_ASSERT_VALID_INPUT_RANGE(expression, message)       _LIBCPP_ASSERT(expression, message)
66 #  define _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(expression, message)    _LIBCPP_ASSERT(expression, message)
67 #  define _LIBCPP_ASSERT_NON_NULL(expression, message)                _LIBCPP_ASSERT(expression, message)
68 #  define _LIBCPP_ASSERT_NON_OVERLAPPING_RANGES(expression, message)  _LIBCPP_ASSERT(expression, message)
69 #  define _LIBCPP_ASSERT_VALID_DEALLOCATION(expression, message)      _LIBCPP_ASSERT(expression, message)
70 #  define _LIBCPP_ASSERT_VALID_EXTERNAL_API_CALL(expression, message) _LIBCPP_ASSERT(expression, message)
71 #  define _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(expression, message)    _LIBCPP_ASSERT(expression, message)
72 #  define _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(expression, message)  _LIBCPP_ASSERT(expression, message)
73 #  define _LIBCPP_ASSERT_PEDANTIC(expression, message)                _LIBCPP_ASSERT(expression, message)
74 #  define _LIBCPP_ASSERT_UNCATEGORIZED(expression, message)           _LIBCPP_ASSERT(expression, message)
75 // Disabled checks.
76 #  define _LIBCPP_ASSERT_SEMANTIC_REQUIREMENT(expression, message)    _LIBCPP_ASSUME(expression)
77 #  define _LIBCPP_ASSERT_INTERNAL(expression, message)                _LIBCPP_ASSUME(expression)
79 // Debug hardening mode checks.
81 #elif _LIBCPP_HARDENING_MODE == _LIBCPP_HARDENING_MODE_DEBUG
83 // All checks enabled.
84 #  define _LIBCPP_ASSERT_VALID_INPUT_RANGE(expression, message)       _LIBCPP_ASSERT(expression, message)
85 #  define _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(expression, message)    _LIBCPP_ASSERT(expression, message)
86 #  define _LIBCPP_ASSERT_NON_NULL(expression, message)                _LIBCPP_ASSERT(expression, message)
87 #  define _LIBCPP_ASSERT_NON_OVERLAPPING_RANGES(expression, message)  _LIBCPP_ASSERT(expression, message)
88 #  define _LIBCPP_ASSERT_VALID_DEALLOCATION(expression, message)      _LIBCPP_ASSERT(expression, message)
89 #  define _LIBCPP_ASSERT_VALID_EXTERNAL_API_CALL(expression, message) _LIBCPP_ASSERT(expression, message)
90 #  define _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(expression, message)    _LIBCPP_ASSERT(expression, message)
91 #  define _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(expression, message)  _LIBCPP_ASSERT(expression, message)
92 #  define _LIBCPP_ASSERT_PEDANTIC(expression, message)                _LIBCPP_ASSERT(expression, message)
93 #  define _LIBCPP_ASSERT_SEMANTIC_REQUIREMENT(expression, message)    _LIBCPP_ASSERT(expression, message)
94 #  define _LIBCPP_ASSERT_INTERNAL(expression, message)                _LIBCPP_ASSERT(expression, message)
95 #  define _LIBCPP_ASSERT_UNCATEGORIZED(expression, message)           _LIBCPP_ASSERT(expression, message)
97 // Disable all checks if hardening is not enabled.
99 #else
101 // All checks disabled.
102 #  define _LIBCPP_ASSERT_VALID_INPUT_RANGE(expression, message)       _LIBCPP_ASSUME(expression)
103 #  define _LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(expression, message)    _LIBCPP_ASSUME(expression)
104 #  define _LIBCPP_ASSERT_NON_NULL(expression, message)                _LIBCPP_ASSUME(expression)
105 #  define _LIBCPP_ASSERT_NON_OVERLAPPING_RANGES(expression, message)  _LIBCPP_ASSUME(expression)
106 #  define _LIBCPP_ASSERT_VALID_DEALLOCATION(expression, message)      _LIBCPP_ASSUME(expression)
107 #  define _LIBCPP_ASSERT_VALID_EXTERNAL_API_CALL(expression, message) _LIBCPP_ASSUME(expression)
108 #  define _LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(expression, message)    _LIBCPP_ASSUME(expression)
109 #  define _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(expression, message)  _LIBCPP_ASSUME(expression)
110 #  define _LIBCPP_ASSERT_PEDANTIC(expression, message)                _LIBCPP_ASSUME(expression)
111 #  define _LIBCPP_ASSERT_SEMANTIC_REQUIREMENT(expression, message)    _LIBCPP_ASSUME(expression)
112 #  define _LIBCPP_ASSERT_INTERNAL(expression, message)                _LIBCPP_ASSUME(expression)
113 #  define _LIBCPP_ASSERT_UNCATEGORIZED(expression, message)           _LIBCPP_ASSUME(expression)
115 #endif // _LIBCPP_HARDENING_MODE == _LIBCPP_HARDENING_MODE_FAST
116 // clang-format on
118 #endif // _LIBCPP___CXX03___ASSERT