1#if !defined ISO && !defined POSIX && !defined XPG4 && !defined XPG42 && !defined UNIX98
2macro bool
3macro-int-constant true {int} == 1
4macro-int-constant false {int} == 0
5macro-int-constant __bool_true_false_are_defined {int} == 1
6
7#if !defined ISO && !defined ISO99 && !defined ISO11
8allow *_t
9#endif
10#endif
11