#define CHECK_PTR_TYPE(x, type) ((x)-(type)(x) + (type)(x)) /** Check that a pointer @x is of type @type. Fail compilation if not. **/
#define PTR_TO(s, i) &((s*)0)->i /** Return OFFSETOF() in form of a pointer. **/
-#define OFFSETOF(s, i) offsetof(s, i) /** Offset of item @i from the start of structure @s **/
+#define OFFSETOF(s, i) ((uns)offsetof(s, i)) /** Offset of item @i from the start of structure @s **/
#define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i))) /** Given a pointer @p to item @i of structure @s, return a pointer to the start of the struct. **/
/** Align an integer @s to the nearest higher multiple of @a (which should be a power of two) **/
void msg(uns flags, const char *fmt, ...) FORMAT_CHECK(printf,2,3);
void vmsg(uns flags, const char *fmt, va_list args); /** A vararg version of msg(). **/
void die(const char *, ...) NONRET FORMAT_CHECK(printf,1,2); /** Log a fatal error message and exit the program. **/
+void vdie(const char *fmt, va_list args) NONRET; /** va_list version of die() **/
extern char *log_title; /** An optional log message title. Set to program name by log_init(). **/
extern int log_pid; /** An optional PID printed in each log message. Set to 0 if it shouldn't be logged. **/