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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-12 14:08:35 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-12 14:08:35 +0300 |
commit | 4a12f38e23d10a5dbad6cce0abaadd10e5a1aa68 (patch) | |
tree | 533208f5479c17b9a7c162a425a967c7a7edf46b /include/linux/stddef.h | |
parent | 0d2f2f4f27694a2214701e7482ab7599ce4e5e77 (diff) | |
parent | 449d48b1b99fdaa076166e200132705ac2bee711 (diff) | |
download | linux-rolling-stable.tar.xz |
Merge v6.17.2linux-rolling-stable
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/stddef.h')
-rw-r--r-- | include/linux/stddef.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/stddef.h b/include/linux/stddef.h index 929d67710cc5..dab49e2ec8c0 100644 --- a/include/linux/stddef.h +++ b/include/linux/stddef.h @@ -93,4 +93,24 @@ enum { #define DECLARE_FLEX_ARRAY(TYPE, NAME) \ __DECLARE_FLEX_ARRAY(TYPE, NAME) +/** + * TRAILING_OVERLAP() - Overlap a flexible-array member with trailing members. + * + * Creates a union between a flexible-array member (FAM) in a struct and a set + * of additional members that would otherwise follow it. + * + * @TYPE: Flexible structure type name, including "struct" keyword. + * @NAME: Name for a variable to define. + * @FAM: The flexible-array member within @TYPE + * @MEMBERS: Trailing overlapping members. + */ +#define TRAILING_OVERLAP(TYPE, NAME, FAM, MEMBERS) \ + union { \ + TYPE NAME; \ + struct { \ + unsigned char __offset_to_##FAM[offsetof(TYPE, FAM)]; \ + MEMBERS \ + }; \ + } + #endif |