<sys/thread.h> on AIX 5.3

The <sys/thread.h> header on 5.3 with bos.adt.include 5.3.0.31 has:
...
/* Kernel view of thread credemtials structure (size-invariant) */
struct thread_credentials {
uint flags; /* Control structure data */
cred_ext_t cred; /* Credentials to be modified */
int reserved[9]; /* reserved fields for future */
} thread_creds_t;

Is this intentional? *Every* program that #include <sys/thread.h> will
have a thread_creds_t global variable. Typo?

--
albert chin (china @at@ thewrittenword .dot. com)