;; to ensure it'll work even if the GC moves ENTER-ALIEN-CALLBACK.
;; Skip any SB-THREAD TLS magic, since we don't expecte anyone
;; to rebind the variable. -- JES, 2006-01-01
;; to ensure it'll work even if the GC moves ENTER-ALIEN-CALLBACK.
;; Skip any SB-THREAD TLS magic, since we don't expecte anyone
;; to rebind the variable. -- JES, 2006-01-01