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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift Collections open source project
//
// Copyright (c) 2021 - 2024 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
//
//===----------------------------------------------------------------------===//
#ifndef BLACK_HOLE_H
#define BLACK_HOLE_H
#include <stdint.h>
#ifdef __cplusplus
// FIXME: Is putting this in a separate compilation unit enough to make
// sure the function call is always emitted?
extern void black_hole(intptr_t value);
extern void black_hole(void *value);
extern intptr_t identity(intptr_t value);
extern void *_identity(void *value);
extern const void *_identity(const void *value);
template <typename T>
static inline T *identity(T *value)
{
return static_cast<T *>(_identity(value));
}
template <typename T>
static inline const T *identity(const T *value)
{
return static_cast<const T *>(_identity(value));
}
#endif /* __cplusplus */
#endif /* BLACK_HOLE_H */
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