1//===-- Safe nullptr check --------------------------------------*- C++ -*-===//
 2//
 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 4// See https://llvm.org/LICENSE.txt for license information.
 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 6//
 7//===----------------------------------------------------------------------===//
 8
 9#ifndef LLVM_LIBC_SRC___SUPPORT_MACROS_NULL_CHECK_H
10#define LLVM_LIBC_SRC___SUPPORT_MACROS_NULL_CHECK_H
11
12#include "src/__support/macros/config.h"
13#include "src/__support/macros/optimization.h"
14#include "src/__support/macros/sanitizer.h"
15
16#if defined(LIBC_ADD_NULL_CHECKS) && !defined(LIBC_HAS_SANITIZER)
17#define LIBC_CRASH_ON_NULLPTR(ptr)                                             \
18  do {                                                                         \
19    if (LIBC_UNLIKELY((ptr) == nullptr))                                       \
20      __builtin_trap();                                                        \
21  } while (0)
22#define LIBC_CRASH_ON_VALUE(var, value)                                        \
23  do {                                                                         \
24    if (LIBC_UNLIKELY((var) == (value)))                                       \
25      __builtin_trap();                                                        \
26  } while (0)
27
28#else
29#define LIBC_CRASH_ON_NULLPTR(ptr)                                             \
30  do {                                                                         \
31  } while (0)
32#define LIBC_CRASH_ON_VALUE(var, value)                                        \
33  do {                                                                         \
34  } while (0)
35#endif
36
37#endif // LLVM_LIBC_SRC___SUPPORT_MACROS_NULL_CHECK_H