/sys$common/syshlp/helplib.hlb CC, Messages, THREADFUNC  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        <Context> the __declspec(thread) storage class
                modifier cannot be used with a function type.
                Modifier is ignored.

 Description    Only objects can be declared with thread-local
                storage.  The storage class modifier is ignored when
                applied to an identifier with function type.

 User Action    Either remove the storage class modifier or change
                the type to one that is valid for __declspec(thread).