--- a/regexParser/subsetConstruction.cc	Mon Jan 25 18:20:37 2016 +0900
+++ b/regexParser/subsetConstruction.cc	Mon Jan 25 18:28:57 2016 +0900
@@ -380,13 +380,13 @@
 }
 
 void subsetConstruction(TransitionGeneratorPtr tg) {
-    for (;tg->stateTop;tg->stateTop = tg->stateTop->next) {
-        CharClassWalkerPtr cw = createCharClassWalker(tg->stateTop->cc);
+    for (StatePtr st = tg->stateList;st;st = st->next) {
+        CharClassWalkerPtr cw = createCharClassWalker(st->cc);
         while (hasNext(cw)) {
             CharClassPtr cc = getNext(cw);
             BitVector bi = cc->nextState;
             if (tg->stateArray[bi.bitContainer]) continue;  // already done
-            StatePtr s = createState(tg,bi);
+            StatePtr s = createState(tg,bi);  // s is added at the end of stateList.
             tg->stateArray[bi.bitContainer] = s;
             determinize(s,tg);
         }