OS Support: Fix include guard
*/
#ifndef KDBOS_H
+#define KDBOS_H
#ifndef KDB_H
#error you attempted to include kdbos.h outside from kdb.h, please include kdb.h instead
#endif
-#define KDBOS_H
#ifdef __cplusplus
#define KS_END (static_cast<ckdb::Key *> (0))
