BADREGISTER

Message        <Context> "<name>" has register storage class, but
               occurs in a context that precludes register storage.
               The storage class has been changed to auto.

Description    An object that was declared with register storage
               class has been referenced in a way that is not valid
               for a register.  The most common example is taking
               the address of an object declared with register
               storage class.  As certain array accesses also
               require taking the address of an array, this message
               can also be output for accessing the element of an
               array declared with register storage class.  The
               compiler will change the storage class from register
               to auto.

User Action    Either remove the register storage class from the
               declaration, or change the reference to be one that
               is valid for objects with register storage class.