VMS Help CC, Messages, THREADSTO2  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        <Context> the __declspec(thread) storage class
                modifier requires a storage class of extern, or
                static.  Modifier is ignored.

 Description    Declaring a local object with thread-local storage
                requires that the object have a storage class of
                extern, or static.  In other cases, the compiler will
                ignore the __declspec(thread) storage class modifier.

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