--- a/c/regexParser/subsetConstraction.cc	Fri Dec 18 14:02:41 2015 +0900
+++ b/c/regexParser/subsetConstraction.cc	Fri Dec 18 14:16:02 2015 +0900
@@ -3,10 +3,9 @@
 #include <ctype.h>
 #include "subsetConstraction.h"
 
-static
 CharClassPtr createCharClassWord(unsigned char *w, CharClassPtr cc1, CharClassPtr cc2) {
     CharClassPtr cc = NEW(CharClass);
-    return cc1;
+    return cc;
 }
 
 CharClassPtr charClassMerge(CharClassPtr cc,unsigned long begin, unsigned long end, BitVector nextState) {
@@ -19,7 +18,7 @@
             cc1->left = charClassMerge(cc->left,begin,end,nextState);
             return cc1;
         } else {
-            CharClassPtr cc2 = charClassMerge(begin,end,0,0);
+            CharClassPtr cc2 = charClassMerge(cc,begin,end,nextState);
             cc2->nextState = nextState;
             cc1->left = cc2;
             return cc1;
@@ -34,9 +33,9 @@
         return cc;
     } else if (begin > cc->cond.range.end ) { // 13
         if (cc->right) {
-            cc->right = charClassMerge(cc->right,begin,end);
+            cc->right = charClassMerge(cc->right,begin,end,nextState);
         } else {
-            cc->right = charClassMerge(begin,end,0,0);
+            cc->right = charClassMerge(cc,begin,end,nextState);
         }
         return cc;
     }
@@ -44,7 +43,7 @@
         CharClassPtr right = cc->right;
         begin = cc->cond.range.begin;
         free(cc);
-        return charClassMerge(right,begin,end);
+        return charClassMerge(right,begin,end,nextState);
     }
     if (begin >= cc->cond.range.begin && begin <= cc->cond.range.end) { // 12
         if (end > cc->cond.range.end) cc->cond.range.end = end; // 11,8
@@ -58,6 +57,7 @@
 }
 
 TGValue generateTransition(NodePtr n,TransitionGenerator tg) {
+    TGValue tgv2;
     if (n->tokenType == '+') {
         TGValue tgv = generateTransition(n->left,tg);
         if (tgv.asterisk) {
@@ -78,7 +78,7 @@
         tgv.asterisk = true;
         return tgv;
     } else if (n->tokenType == 'c'){
-
+        return tgv2;
     } else if (n->tokenType == 'a'){
         TGValue tgv;
         tgv.ts = (TransitionPtr)malloc(sizeof(Transition));
@@ -90,6 +90,7 @@
     } else {
         // error
     }
+    return tgv2;
 }
 
 void printTransitionList(TransitionPtr ts) {