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17c05a44d9
This changes the mechanism for verbose termination (again!) to make it support compile-time customization in addition to link-time customization, which is important for users who need fine-grained control over what code gets generated around sites that call the verbose termination handler. This concern had been raised to me both privately by prospecting users and in https://llvm.org/D140944, so I think it is clearly worth fixing. We still support _LIBCPP_AVAILABILITY_CUSTOM_VERBOSE_ABORT_PROVIDED for a limited time since the same functionality can be achieved by overriding the _LIBCPP_VERBOSE_ABORT macro. Differential Revision: https://reviews.llvm.org/D141326
56 lines
2.1 KiB
C++
56 lines
2.1 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ASSERT
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#define _LIBCPP___ASSERT
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#include <__config>
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#include <__verbose_abort>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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// TODO: Remove in LLVM 17.
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#if defined(_LIBCPP_DEBUG)
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# error "Defining _LIBCPP_DEBUG is not supported anymore. Please use _LIBCPP_ENABLE_DEBUG_MODE instead."
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#endif
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// Automatically enable assertions when the debug mode is enabled.
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#if defined(_LIBCPP_ENABLE_DEBUG_MODE)
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# ifndef _LIBCPP_ENABLE_ASSERTIONS
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# define _LIBCPP_ENABLE_ASSERTIONS 1
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# endif
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#endif
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#ifndef _LIBCPP_ENABLE_ASSERTIONS
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# define _LIBCPP_ENABLE_ASSERTIONS _LIBCPP_ENABLE_ASSERTIONS_DEFAULT
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#endif
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#if _LIBCPP_ENABLE_ASSERTIONS != 0 && _LIBCPP_ENABLE_ASSERTIONS != 1
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# error "_LIBCPP_ENABLE_ASSERTIONS must be set to 0 or 1"
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#endif
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#if _LIBCPP_ENABLE_ASSERTIONS
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# define _LIBCPP_ASSERT(expression, message) \
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(__builtin_expect(static_cast<bool>(expression), 1) ? \
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(void)0 : \
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_LIBCPP_VERBOSE_ABORT("%s:%d: assertion %s failed: %s", __FILE__, __LINE__, #expression, message))
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#elif !defined(_LIBCPP_ASSERTIONS_DISABLE_ASSUME) && __has_builtin(__builtin_assume)
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# define _LIBCPP_ASSERT(expression, message) \
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(_LIBCPP_DIAGNOSTIC_PUSH \
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_LIBCPP_CLANG_DIAGNOSTIC_IGNORED("-Wassume") \
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__builtin_assume(static_cast<bool>(expression)) \
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_LIBCPP_DIAGNOSTIC_POP)
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#else
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# define _LIBCPP_ASSERT(expression, message) ((void)0)
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#endif
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#endif // _LIBCPP___ASSERT
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