stddef.h

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_LINUX_STDDEF_H
#define _UAPI_LINUX_STDDEF_H
 
#ifdef __KERNEL__
#include <linux/compiler_types.h>
#endif
 
#ifndef __always_inline
#define __always_inline inline
#endif
 
/* Not all C++ standards support type declarations inside an anonymous union */
#ifndef __cplusplus
#define __struct_group_tag(TAG)     TAG
#else
#define __struct_group_tag(TAG)
#endif
 
#define __struct_group(TAG, NAME, ATTRS, MEMBERS...) \
    union { \
        struct { MEMBERS } ATTRS; \
        struct __struct_group_tag(TAG) { MEMBERS } ATTRS NAME; \
    } ATTRS
 
#ifdef __cplusplus
/* sizeof(struct{}) is 1 in C++, not 0, can't use C version of the macro. */
#define __DECLARE_FLEX_ARRAY(T, member) \
    T member[0]
#else
#define __DECLARE_FLEX_ARRAY(TYPE, NAME)    \
    struct { \
        struct { } __empty_ ## NAME; \
        TYPE NAME[]; \
    }
#endif
 
#ifndef __counted_by
#define __counted_by(m)
#endif
 
#ifndef __counted_by_le
#define __counted_by_le(m)
#endif
 
#ifndef __counted_by_be
#define __counted_by_be(m)
#endif
 
#ifndef __counted_by_ptr
#define __counted_by_ptr(m)
#endif
 
#ifdef __KERNEL__
#define __kernel_nonstring  __nonstring
#else
#define __kernel_nonstring
#endif
 
#endif /* _UAPI_LINUX_STDDEF_H */