diff --git a/GNUmakefile b/GNUmakefile
index f6a7e704..ee72c6a3 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -129,6 +129,7 @@ mescc-check: t-check
 	build-aux/mes-snarf.scm $<
 
 mini-mes: mini-mes.h mini-mes.i mini-mes.environment.i mini-mes.symbols.i
+mini-mes: vector.c
 mini-mes: mlibc.c mstart.c
 mini-mes: GNUmakefile
 mini-mes: module/mes/read-0-32.mo
@@ -140,6 +141,7 @@ mini-mes: scaffold/mini-mes.c
 	chmod +x $@
 
 guile-mini-mes: mini-mes.h mini-mes.i mini-mes.environment.i mini-mes.symbols.i
+guile-mini-mes: vector.c
 guile-mini-mes: module/mes/read-0-32.mo
 guile-mini-mes: scaffold/mini-mes.c
 	guile/mescc.scm $< > $@ || rm -f $@
diff --git a/scaffold/mini-mes.c b/scaffold/mini-mes.c
index d3b85db2..7ec9ba2e 100644
--- a/scaffold/mini-mes.c
+++ b/scaffold/mini-mes.c
@@ -223,9 +223,7 @@ SCM
 make_cell_ (SCM type, SCM car, SCM cdr)
 {
   SCM x = alloc (1);
-#if __GNUC__
   assert (TYPE (type) == TNUMBER);
-#endif
   TYPE (x) = VALUE (type);
   if (VALUE (type) == TCHAR || VALUE (type) == TNUMBER) {
     if (car) CAR (x) = CAR (car);
@@ -271,10 +269,8 @@ SCM
 list_of_char_equal_p (SCM a, SCM b) ///((internal))
 {
   while (a != cell_nil && b != cell_nil && VALUE (car (a)) == VALUE (car (b))) {
-#if __GNUC__
     assert (TYPE (car (a)) == TCHAR);
     assert (TYPE (car (b)) == TCHAR);
-#endif
     a = cdr (a);
     b = cdr (b);
   }
@@ -512,9 +508,7 @@ SCM
 append2 (SCM x, SCM y)
 {
   if (x == cell_nil) return y;
-#if __GNUC__
   assert (TYPE (x) == TPAIR);
-#endif
   return cons (car (x), append2 (cdr (x), y));
 }
 
@@ -573,9 +567,7 @@ assq_ref_env (SCM x, SCM a)
 SCM
 set_car_x (SCM x, SCM e)
 {
-#if __GNUC__
   assert (TYPE (x) == TPAIR);
-#endif
   CAR (x) = e;
   return cell_unspecified;
 }
diff --git a/vector.c b/vector.c
index 5f433230..fc2fea5e 100644
--- a/vector.c
+++ b/vector.c
@@ -25,7 +25,23 @@ make_vector (SCM n)
   VALUE (tmp_num) = TVECTOR;
   SCM v = alloc (k);
   SCM x = make_cell_ (tmp_num, k, v);
+#if 0
+  //__GNUC__
   for (int i=0; i<k; i++) g_cells[v+i] = g_cells[vector_entry (cell_unspecified)];
+#else
+  for (int i=0; i<k; i++)
+    {
+      SCM y = v+i;
+      SCM z = vector_entry (cell_unspecified);
+      //g_cells[y] = g_cells[z];
+      SCM zz = TYPE (z);
+      TYPE (y) = zz;
+      zz = CAR (z);
+      CAR (y) = zz;
+      zz = CDR (z);
+      CDR (y) = zz;
+    }
+#endif
   return x;
 }
 
@@ -59,7 +75,20 @@ vector_set_x (SCM x, SCM i, SCM e)
 {
   assert (TYPE (x) == TVECTOR);
   assert (VALUE (i) < LENGTH (x));
+#if 0
+  //__GNUC__
   g_cells[VECTOR (x)+VALUE (i)] = g_cells[vector_entry (e)];
+#else
+  SCM y = VECTOR (x)+VALUE (i);
+  SCM z = vector_entry (e);
+  //g_cells[y] = g_cells[z];
+  SCM zz = TYPE (z);
+  TYPE (y) = zz;
+  zz = CAR (z);
+  CAR (y) = zz;
+  zz = CDR (z);
+  CDR (y) = zz;
+#endif
   return cell_unspecified;
 }
 
@@ -71,7 +100,21 @@ list_to_vector (SCM x)
   SCM p = VECTOR (v);
   while (x != cell_nil)
     {
+#if 0
+      //__GNUC__
       g_cells[p++] = g_cells[vector_entry (car (x))];
+#else
+      SCM y = p;
+      SCM z = vector_entry (car (x));
+      //g_cells[p++] = g_cells[y];
+      SCM zz = TYPE (z);
+      TYPE (y) = zz;
+      zz = CAR (z);
+      CAR (y) = zz;
+      zz = CDR (z);
+      CDR (y) = zz;
+      p++;
+#endif
       x = cdr (x);
     }
   return v;