#define SET_FLAG(v, flag, b) \
(v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
-#define IN_SET(x, ...) \
+#define IN_SET(x, y, ...) \
({ \
- const typeof(x) _x = (x); \
+ const typeof(y) _y = (y); \
+ const typeof(_y) _x = (x); \
unsigned _i; \
bool _found = false; \
- for (_i = 0; _i < sizeof((const typeof(_x)[]) { __VA_ARGS__ })/sizeof(const typeof(_x)); _i++) \
- if (((const typeof(_x)[]) { __VA_ARGS__ })[_i] == _x) { \
+ for (_i = 0; _i < 1 + sizeof((const typeof(_x)[]) { __VA_ARGS__ })/sizeof(const typeof(_x)); _i++) \
+ if (((const typeof(_x)[]) { _y, __VA_ARGS__ })[_i] == _x) { \
_found = true; \
break; \
} \