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
15#if defined(LIBC_ADD_NULL_CHECKS)
16#define LIBC_CRASH_ON_NULLPTR(ptr) \
17 do { \
18 if (LIBC_UNLIKELY((ptr) == nullptr)) \
19 __builtin_trap(); \
20 } while (0)
21#define LIBC_CRASH_ON_VALUE(var, value) \
22 do { \
23 if (LIBC_UNLIKELY((var) == (value))) \
24 __builtin_trap(); \
25 } while (0)
26
27#else
28#define LIBC_CRASH_ON_NULLPTR(ptr) \
29 do { \
30 } while (0)
31#define LIBC_CRASH_ON_VALUE(var, value) \
32 do { \
33 } while (0)
34#endif
35
36#endif // LLVM_LIBC_SRC___SUPPORT_MACROS_NULL_CHECK_H
37