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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */#ifndef _LINUX_STDDEF_H#define _LINUX_STDDEF_H
#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
/** * __struct_group() - Create a mirrored named and anonyomous struct * * @TAG: The tag name for the named sub-struct (usually empty) * @NAME: The identifier name of the mirrored sub-struct * @ATTRS: Any struct attributes (usually empty) * @MEMBERS: The member declarations for the mirrored structs * * Used to create an anonymous union of two structs with identical layout * and size: one anonymous and one named. The former's members can be used * normally without sub-struct naming, and the latter can be used to * reason about the start, end, and size of the group of struct members. * The named struct can also be explicitly tagged for layer reuse (C only), * as well as both having struct attributes appended. */#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/** * __DECLARE_FLEX_ARRAY() - Declare a flexible array usable in a union * * @TYPE: The type of each flexible array element * @NAME: The name of the flexible array member * * In order to have a flexible array member in a union or alone in a * struct, it needs to be wrapped in an anonymous struct with at least 1 * named member, but that member can be empty. */#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
#define __kernel_nonstring
#endif /* _LINUX_STDDEF_H */