#define inline _inline
#endif
+#if !defined(UL_BUILD_BUG_ON_MSG_LINE) && defined(__OPTIMIZE__) && \
+ ((__GNUC__ * 1000 + __GNUC_MINOR__) >= 4004)
+#define UL_BUILD_BUG_ON_MSG_LINE_EXP1(condition, msg, line) \
+({ \
+ if (!!(condition)) { \
+ void compile_time_bug_on_line_ ## line (void) __attribute__((error(msg))); \
+ compile_time_bug_on_line_ ## line (); \
+ } \
+})
+#define UL_BUILD_BUG_ON_MSG_LINE(condition, msg, line) \
+ UL_BUILD_BUG_ON_MSG_LINE_EXP1(condition, msg, line)
+#endif /*UL_BUILD_BUG_ON_MSG for GCC*/
+
+#ifndef UL_BUILD_BUG_ON_MSG_LINE
+#define UL_BUILD_BUG_ON_MSG_LINE(condition, msg, line) \
+ ((void)sizeof(char[1 - 2*!!(condition)]))
+#endif /*UL_BUILD_BUG_ON_MSG*/
+
+#ifndef UL_BUILD_BUG_ON_MSG
+#define UL_BUILD_BUG_ON_MSG(condition, msg) \
+ UL_BUILD_BUG_ON_MSG_LINE(condition, msg, __LINE__)
+#endif /*UL_BUILD_BUG_ON_MSG*/
+
+#ifndef UL_BUILD_BUG_ON
+#define UL_BUILD_BUG_ON(condition) \
+ UL_BUILD_BUG_ON_MSG(condition, "Build time check " #condition " failed")
+#endif /*UL_BUILD_BUG_ON*/
+
+#if !defined(UL_OFFSETOF) && defined(__GNUC__) && __GNUC__ >= 4
+#define UL_OFFSETOF(_type, _member) __builtin_offsetof(_type, _member)
+#endif /*UL_OFFSETOF*/
+
#ifndef UL_OFFSETOF
/* offset of structure field */
#define UL_OFFSETOF(_type,_member) \