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| author | Anup Patel <apatel@ventanamicro.com> | 2023-07-12 22:04:53 +0530 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2023-07-20 15:59:29 +0100 |
| commit | d8343698df72d03986efc4b985b2ee18df514200 (patch) | |
| tree | 5c8cba8ebf345597018f5ca381786dd7a34b404a | |
| parent | 15757e8e6441d83757c39046a6cdd3e4d74200ce (diff) | |
| download | kvmtool-d8343698df72d03986efc4b985b2ee18df514200.tar.gz | |
kvm tools: Add __DECLARE_FLEX_ARRAY() in include/linux/stddef.h
Latest x86 UAPI headers uses __DECLARE_FLEX_ARRAY() macro so let us take
this macro from Linux UAPI header and add it to include/linux/stddef.h.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20230712163501.1769737-2-apatel@ventanamicro.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | include/linux/stddef.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/stddef.h b/include/linux/stddef.h index 39da8088..d94e900f 100644 --- a/include/linux/stddef.h +++ b/include/linux/stddef.h @@ -7,4 +7,20 @@ #undef offsetof #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) +/** + * __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 |