1 #ifndef _EXT2FS_COMPILER_H
2 #define _EXT2FS_COMPILER_H
5 #define __has_builtin(x) 0
9 #if __has_builtin(__builtin_offsetof)
10 #define offsetof(TYPE, MEMBER) __builtin_offsetof(TYPE, MEMBER)
11 #elif defined(__compiler_offsetof)
12 #define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
14 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
17 #define container_of(ptr, type, member) ({ \
18 const __typeof__( ((type *)0)->member ) *__mptr = (ptr); \
19 (type *)( (char *)__mptr - offsetof(type,member) );})
22 #endif /* _EXT2FS_COMPILER_H */