1 /*===---- __stddef_offsetof.h - Definition of offsetof ---------------------===
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(offsetof) ||                                                      \
15     (__has_feature(modules) && !__building_module(_Builtin_stddef))
16 #define offsetof(t, d) __builtin_offsetof(t, d)
17 #endif
18