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macro: add macro for determining size of struct with trailing union

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Lennart Poettering 2023-02-10 17:56:30 +01:00
parent d51e31ac41
commit d6e9e8c7b9
1 changed files with 1 additions and 0 deletions
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src/basic/macro.h
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@ -248,6 +248,7 @@ static inline int __coverity_check_and_return__(int condition) {
#define char_array_0(x) x[sizeof(x)-1] = 0;
#define sizeof_field(struct_type, member) sizeof(((struct_type *) 0)->member)
#define endoffsetof_field(struct_type, member) (offsetof(struct_type, member) + sizeof_field(struct_type, member))
/* Returns the number of chars needed to format variables of the specified type as a decimal string. Adds in
* extra space for a negative '-' prefix for signed types. Includes space for the trailing NUL. */