| 1 | /*===---- __stddef_nullptr_t.h - Definition of nullptr_t -------------------=== |
| 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 | |
| 10 | /* |
| 11 | * When -fbuiltin-headers-in-system-modules is set this is a non-modular header |
| 12 | * and needs to behave as if it was textual. |
| 13 | */ |
| 14 | #if !defined(_NULLPTR_T) || \ |
| 15 | (__has_feature(modules) && !__building_module(_Builtin_stddef)) |
| 16 | #define _NULLPTR_T |
| 17 | |
| 18 | #ifdef __cplusplus |
| 19 | #if defined(_MSC_EXTENSIONS) && defined(_NATIVE_NULLPTR_SUPPORTED) |
| 20 | namespace std { |
| 21 | typedef decltype(nullptr) nullptr_t; |
| 22 | } |
| 23 | using ::std::nullptr_t; |
| 24 | #endif |
| 25 | #elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L |
| 26 | typedef typeof(nullptr) nullptr_t; |
| 27 | #endif |
| 28 | |
| 29 | #endif |