clang 20.0.0git
__stddef_offsetof.h
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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