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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_NOTREACHED_H_
#define BASE_NOTREACHED_H_
#include "base/base_export.h"
#include "base/check.h"
#include "base/compiler_specific.h"
#include "base/dcheck_is_on.h"
namespace logging {
#if CHECK_WILL_STREAM()
#define NOTREACHED_INTERNAL_IMPL() ::logging::NotReachedNoreturnError()
#else
// This function is used to be able to detect NOTREACHED() failures in stack
// traces where this symbol is preserved (even if inlined). Its implementation
// matches logging::CheckFailure() but intentionally uses a different signature.
[[noreturn]] NOMERGE IMMEDIATE_CRASH_ALWAYS_INLINE void NotReachedFailure() {
base::ImmediateCrash();
}
#define NOTREACHED_INTERNAL_IMPL() \
DISCARDING_CHECK_FUNCTION_IMPL(::logging::NotReachedFailure(), false)
#endif
// NOTREACHED() annotates should-be unreachable code. When a base::NotFatalUntil
// milestone is provided the instance is non-fatal (dumps without crashing)
// until that milestone is hit. That is: `NOTREACHED(base::NotFatalUntil::M120)`
// starts crashing in M120. See base/check.h.
#define NOTREACHED(...) \
BASE_IF(BASE_IS_EMPTY(__VA_ARGS__), NOTREACHED_INTERNAL_IMPL(), \
LOGGING_CHECK_FUNCTION_IMPL( \
::logging::NotReachedError::NotReached(__VA_ARGS__), false))
// The DUMP_WILL_BE_NOTREACHED() macro provides a convenient way to
// non-fatally dump in official builds if ever hit. See DUMP_WILL_BE_CHECK for
// suggested usage.
#define DUMP_WILL_BE_NOTREACHED() \
::logging::NotReachedError::DumpWillBeNotReached()
} // namespace logging
#endif // BASE_NOTREACHED_H_
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