30 lines
875 B
C
30 lines
875 B
C
/*===---- __stddef_null.h - Definition of NULL -----------------------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#if !defined(NULL) || !__building_module(_Builtin_stddef)
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/* linux/stddef.h will define NULL to 0. glibc (and other) headers then define
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* __need_NULL and rely on stddef.h to redefine NULL to the correct value again.
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* Modules don't support redefining macros like that, but support that pattern
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* in the non-modules case.
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*/
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#undef NULL
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#ifdef __cplusplus
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#if !defined(__MINGW32__) && !defined(_MSC_VER)
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#define NULL __null
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#else
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#define NULL 0
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#endif
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#else
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#define NULL ((void*)0)
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#endif
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#endif
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