| 1 | // -*- C++ -*- |
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| 2 | //===----------------------------------------------------------------------===// |
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| 3 | // |
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| 4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 5 | // See https://llvm.org/LICENSE.txt for license information. |
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| 6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 7 | // |
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| 8 | //===----------------------------------------------------------------------===// |
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| 9 | |
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| 10 | #ifndef _LIBCPP___ASSERT |
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| 11 | #define _LIBCPP___ASSERT |
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| 12 | |
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| 13 | #include <__availability> |
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| 14 | #include <__config> |
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| 15 | |
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| 16 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
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| 17 | # pragma GCC system_header |
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| 18 | #endif |
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| 19 | |
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| 20 | // This is for backwards compatibility with code that might have been enabling |
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| 21 | // assertions through the Debug mode previously. |
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| 22 | // TODO: In LLVM 16, make it an error to define _LIBCPP_DEBUG |
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| 23 | #if defined(_LIBCPP_DEBUG) |
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| 24 | # ifndef _LIBCPP_ENABLE_ASSERTIONS |
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| 25 | # define _LIBCPP_ENABLE_ASSERTIONS 1 |
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| 26 | # endif |
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| 27 | #endif |
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| 28 | |
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| 29 | // Automatically enable assertions when the debug mode is enabled. |
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| 30 | #if defined(_LIBCPP_ENABLE_DEBUG_MODE) |
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| 31 | # ifndef _LIBCPP_ENABLE_ASSERTIONS |
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| 32 | # define _LIBCPP_ENABLE_ASSERTIONS 1 |
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| 33 | # endif |
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| 34 | #endif |
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| 35 | |
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| 36 | #ifndef _LIBCPP_ENABLE_ASSERTIONS |
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| 37 | # define _LIBCPP_ENABLE_ASSERTIONS _LIBCPP_ENABLE_ASSERTIONS_DEFAULT |
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| 38 | #endif |
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| 39 | |
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| 40 | #if _LIBCPP_ENABLE_ASSERTIONS != 0 && _LIBCPP_ENABLE_ASSERTIONS != 1 |
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| 41 | # error "_LIBCPP_ENABLE_ASSERTIONS must be set to 0 or 1" |
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| 42 | #endif |
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| 43 | |
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| 44 | #if _LIBCPP_ENABLE_ASSERTIONS |
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| 45 | # define _LIBCPP_ASSERT(expression, message) \ |
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| 46 | (__builtin_expect(static_cast<bool>(expression), 1) ? \ |
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| 47 | (void)0 : \ |
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| 48 | ::std::__libcpp_assertion_handler(__FILE__, __LINE__, #expression, message)) |
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| 49 | #elif !defined(_LIBCPP_ASSERTIONS_DISABLE_ASSUME) && __has_builtin(__builtin_assume) |
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| 50 | # define _LIBCPP_ASSERT(expression, message) \ |
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| 51 | (_LIBCPP_DIAGNOSTIC_PUSH \ |
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| 52 | _LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wassume") \ |
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| 53 | __builtin_assume(static_cast<bool>(expression)) \ |
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| 54 | _LIBCPP_DIAGNOSTIC_POP) |
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| 55 | #else |
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| 56 | # define _LIBCPP_ASSERT(expression, message) ((void)0) |
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| 57 | #endif |
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| 58 | |
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| 59 | _LIBCPP_BEGIN_NAMESPACE_STD |
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| 60 | |
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| 61 | _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_ASSERTION_HANDLER |
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| 62 | void __libcpp_assertion_handler(char const* __file, int __line, char const* __expression, char const* __message); |
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| 63 | |
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| 64 | _LIBCPP_END_NAMESPACE_STD |
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| 65 | |
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| 66 | #endif // _LIBCPP___ASSERT |
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| 67 | |
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