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)
20namespace std {
21typedef decltype(nullptr) nullptr_t;
22}
23using ::std::nullptr_t;
24#endif
25#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L
26typedef typeof(nullptr) nullptr_t;
27#endif
28
29#endif