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
38