extern void scm_init_debug (void);
#ifdef GUILE_DEBUG
-extern SCM scm_make_gloc (SCM var, SCM env);
-extern SCM scm_gloc_p (SCM obj);
extern SCM scm_make_iloc (SCM frame, SCM binding, SCM cdrp);
extern SCM scm_iloc_p (SCM obj);
extern SCM scm_memcons (SCM car, SCM cdr, SCM env);