diff --git a/lobject.h b/lobject.h
index 95f8e18..f21e8a9 100644
--- a/lobject.h
+++ b/lobject.h
@@ -89,8 +89,8 @@
 #define righttt(obj)		(ttypetag(obj) == gcvalue(obj)->tt)
 
 #define checkliveness(L,obj) \
-	lua_longassert(!iscollectable(obj) || \
-		(righttt(obj) && (L == NULL || !isdead(G(L),gcvalue(obj)))))
+	((void)L, lua_longassert(!iscollectable(obj) || \
+		(righttt(obj) && (L == NULL || !isdead(G(L),gcvalue(obj))))))
 
 
 /* Macros to set values */
@@ -100,7 +100,7 @@
 #define setobj(L,obj1,obj2) \
 	{ TValue *io1=(obj1); const TValue *io2=(obj2); \
           io1->value_ = io2->value_; io1->tt_ = io2->tt_; \
-	  (void)L; checkliveness(L,io1); lua_assert(!isreallyempty(io1)); }
+	  checkliveness(L,io1); lua_assert(!isreallyempty(io1)); }
 
 /*
 ** different types of assignments, according to destination
@@ -651,14 +651,14 @@
 #define setnodekey(L,node,obj) \
 	{ Node *n_=(node); const TValue *io_=(obj); \
 	  n_->u.key_val = io_->value_; n_->u.key_tt = io_->tt_; \
-	  (void)L; checkliveness(L,io_); }
+	  checkliveness(L,io_); }
 
 
 /* copy a value from a key */
 #define getnodekey(L,obj,node) \
 	{ TValue *io_=(obj); const Node *n_=(node); \
 	  io_->value_ = n_->u.key_val; io_->tt_ = n_->u.key_tt; \
-	  (void)L; checkliveness(L,io_); }
+	  checkliveness(L,io_); }
 
 
 /*
diff --git a/testes/gc.lua b/testes/gc.lua
index 6d24e0d..9ea054c 100644
--- a/testes/gc.lua
+++ b/testes/gc.lua
@@ -99,35 +99,28 @@
 do
   print("creating many objects")
 
-  local contCreate = 0
-
   local limit = 5000
 
-  while contCreate <= limit do
+  for i = 1, limit do
     local a = {}; a = nil
-    contCreate = contCreate+1
   end
 
   local a = "a"
 
-  contCreate = 0
-  while contCreate <= limit do
-    a = contCreate .. "b";
+  for i = 1, limit do
+    a = i .. "b";
     a = string.gsub(a, '(%d%d*)', "%1 %1")
     a = "a"
-    contCreate = contCreate+1
   end
 
 
-  contCreate = 0
 
   a = {}
 
   function a:test ()
-    while contCreate <= limit do
-      load(string.format("function temp(a) return 'a%d' end", contCreate), "")()
-      assert(temp() == string.format('a%d', contCreate))
-      contCreate = contCreate+1
+    for i = 1, limit do
+      load(string.format("function temp(a) return 'a%d' end", i), "")()
+      assert(temp() == string.format('a%d', i))
     end
   end
 
@@ -166,9 +159,8 @@
 x = "01234567890123456789012345678901234567890123456789012345678901234567890123456789"
 assert(string.len(x)==80)
 s = ''
-n = 0
 k = math.min(300, (math.maxinteger // 80) // 2)
-while n < k do s = s..x; n=n+1; j=tostring(n)  end
+for n = 1, k do s = s..x; j=tostring(n)  end
 assert(string.len(s) == k*80)
 s = string.sub(s, 1, 10000)
 s, i = string.gsub(s, '(%d%d%d%d)', '')
diff --git a/testes/libs/makefile b/testes/libs/makefile
index 698f898..a133092 100644
--- a/testes/libs/makefile
+++ b/testes/libs/makefile
@@ -11,17 +11,17 @@
 all: lib1.so lib11.so lib2.so lib21.so lib2-v2.so
 	touch all
 
-lib1.so: lib1.c $(LUA_DIR)/luaconf.h $(LUA_DIR)/ltests.h
+lib1.so: lib1.c $(LUA_DIR)/luaconf.h
 	$(CC) $(CFLAGS) -o lib1.so lib1.c
 
-lib11.so: lib11.c $(LUA_DIR)/luaconf.h $(LUA_DIR)/ltests.h
+lib11.so: lib11.c $(LUA_DIR)/luaconf.h
 	$(CC) $(CFLAGS) -o lib11.so lib11.c
 
-lib2.so: lib2.c $(LUA_DIR)/luaconf.h $(LUA_DIR)/ltests.h
+lib2.so: lib2.c $(LUA_DIR)/luaconf.h
 	$(CC) $(CFLAGS) -o lib2.so lib2.c
 
-lib21.so: lib21.c $(LUA_DIR)/luaconf.h $(LUA_DIR)/ltests.h
+lib21.so: lib21.c $(LUA_DIR)/luaconf.h
 	$(CC) $(CFLAGS) -o lib21.so lib21.c
 
-lib2-v2.so: lib21.c $(LUA_DIR)/luaconf.h $(LUA_DIR)/ltests.h
+lib2-v2.so: lib21.c $(LUA_DIR)/luaconf.h
 	$(CC) $(CFLAGS) -o lib2-v2.so lib22.c