diff --git a/libguile/hashtab.c b/libguile/hashtab.c
index e55eee5aa..7f882948a 100644
--- a/libguile/hashtab.c
+++ b/libguile/hashtab.c
@@ -400,47 +400,9 @@ hashtable_print (SCM exp, SCM port, scm_print_state *pstate SCM_UNUSED)
   return 1;
 }
 
-/* FIXME */
-#define UNMARKED_CELL_P(x) 0 /* (SCM_NIMP(x) && !SCM_GC_MARK_P (x)) */
-
 /* keep track of hash tables that need to shrink after scan */
 static SCM to_rehash = SCM_EOL;
 
-/* scan hash tables and update hash tables item count */
-void
-scm_i_scan_weak_hashtables ()
-{
-#if 0 /* FIXME */
-  SCM *next = &weak_hashtables;
-  SCM h = *next;
-  while (!scm_is_null (h))
-    {
-      if (!SCM_GC_MARK_P (h))
-	*next = h = SCM_HASHTABLE_NEXT (h);
-      else
-	{
-	  SCM vec = SCM_HASHTABLE_VECTOR (h);
-	  size_t delta = SCM_I_WVECT_DELTA (vec);
-	  SCM_I_SET_WVECT_DELTA (vec, 0);
-	  SCM_SET_HASHTABLE_N_ITEMS (h, SCM_HASHTABLE_N_ITEMS (h) - delta);
-
-	  if (SCM_HASHTABLE_N_ITEMS (h) < SCM_HASHTABLE_LOWER (h))
-	    {
-	      SCM tmp = SCM_HASHTABLE_NEXT (h);
-	      /* temporarily move table from weak_hashtables to to_rehash */
-	      SCM_SET_HASHTABLE_NEXT (h, to_rehash);
-	      to_rehash = h;
-	      *next = h = tmp;
-	    }
-	  else
-	    {
-	      next = SCM_HASHTABLE_NEXTLOC (h);
-	      h = SCM_HASHTABLE_NEXT (h);
-	    }
-	}
-    }
-#endif
-}
 
 static void *
 rehash_after_gc (void *dummy1 SCM_UNUSED,
diff --git a/libguile/hashtab.h b/libguile/hashtab.h
index 101735460..dd6931150 100644
--- a/libguile/hashtab.h
+++ b/libguile/hashtab.h
@@ -97,7 +97,6 @@ SCM_API SCM scm_weak_value_hash_table_p (SCM h);
 SCM_API SCM scm_doubly_weak_hash_table_p (SCM h);
 
 SCM_API void scm_i_rehash (SCM table, unsigned long (*hash_fn)(), void *closure, const char*func_name);
-SCM_API void scm_i_scan_weak_hashtables (void);
 
 SCM_API SCM scm_hash_fn_get_handle (SCM table, SCM obj, unsigned long (*hash_fn) (), SCM (*assoc_fn) (), void * closure);
 SCM_API SCM scm_hash_fn_create_handle_x (SCM table, SCM obj, SCM init, unsigned long (*hash_fn) (), SCM (*assoc_fn) (), void * closure);
diff --git a/libguile/procs.c b/libguile/procs.c
index 2359eae1f..8bf46649b 100644
--- a/libguile/procs.c
+++ b/libguile/procs.c
@@ -109,20 +109,6 @@ scm_c_define_subr_with_generic (const char *name,
   return subr;
 }
 
-void
-scm_mark_subr_table ()
-{
-  long i;
-  for (i = 0; i < scm_subr_table_size; ++i)
-    {
-      scm_gc_mark (scm_subr_table[i].name);
-      if (scm_subr_table[i].generic && *scm_subr_table[i].generic)
-	scm_gc_mark (*scm_subr_table[i].generic);
-      if (SCM_NIMP (scm_subr_table[i].properties))
-	scm_gc_mark (scm_subr_table[i].properties);
-    }
-}
-
 
 #ifdef CCLO
 SCM 
diff --git a/libguile/procs.h b/libguile/procs.h
index 060c8ee42..74627254a 100644
--- a/libguile/procs.h
+++ b/libguile/procs.h
@@ -136,7 +136,6 @@ SCM_API long scm_subr_table_room;
 
 
 
-SCM_API void scm_mark_subr_table (void);
 SCM_API void scm_free_subr_entry (SCM subr);
 SCM_API SCM scm_c_make_subr (const char *name, long type, SCM (*fcn)());
 SCM_API SCM scm_c_make_subr_with_generic (const char *name, long type,
diff --git a/libguile/weaks.c b/libguile/weaks.c
index b27839e48..7950d891b 100644
--- a/libguile/weaks.c
+++ b/libguile/weaks.c
@@ -191,74 +191,9 @@ SCM_DEFINE (scm_doubly_weak_alist_vector_p, "doubly-weak-alist-vector?", 1, 0, 0
 }
 #undef FUNC_NAME
 
-#define UNMARKED_CELL_P(x) 1 /* (SCM_NIMP(x) && !SCM_GC_MARK_P (x)) *//*
-									FIXME */
 
 
-static void
-scm_i_remove_weaks (SCM w)
-{
-  return;  /* FIXME */
-#if 0
-  SCM *ptr = SCM_I_WVECT_GC_WVELTS (w);
-  size_t n = SCM_I_WVECT_LENGTH (w);
-  size_t i;
-
-  if (!SCM_IS_WHVEC_ANY (w))
-    {
-      for (i = 0; i < n; ++i)
-	if (UNMARKED_CELL_P (ptr[i]))
-	  ptr[i] = SCM_BOOL_F;
-    }
-  else
-    {
-      size_t delta = 0;
-
-      for (i = 0; i < n; ++i)
-	{
-	  SCM alist, *fixup;
-
-	  fixup = ptr + i;
-	  alist = *fixup;
-	  while (scm_is_pair (alist) && !SCM_GC_MARK_P (alist))
-	    {
-	      if (UNMARKED_CELL_P (SCM_CAR (alist)))
-		{
-		  *fixup = SCM_CDR (alist);
-		  delta++;
-		}
-	      else
-		{
-		  SCM_SET_GC_MARK (alist);
-		  fixup = SCM_CDRLOC (alist);
-		}
-	      alist = *fixup;
-	    }
-	}
-#if 0
-      if (delta)
-	fprintf (stderr, "vector %p, delta %d\n", w, delta);
-#endif
-      SCM_I_SET_WVECT_DELTA (w, delta);
-    }
-#endif
-}
-
-#if 0
-void
-scm_i_remove_weaks_from_weak_vectors ()
-{
-  SCM w = weak_vectors;
-  while (!scm_is_null (w))
-    {
-      scm_i_remove_weaks (w);
-      w = SCM_I_WVECT_GC_CHAIN (w);
-    }
-}
-#endif
-
 
-
 SCM
 scm_init_weaks_builtins ()
 {