--- a/main.cbc	Wed Dec 16 16:52:16 2015 +0900
+++ b/main.cbc	Wed Dec 16 17:16:29 2015 +0900
@@ -2,20 +2,22 @@
 ** Dining Philosophers Problem's scheduler
 */
 #include "dpp.h"
+__code die(char *err);
+__code init_fork2(PhilsPtr self, int count, int id);
 
 #define NUM_PHILOSOPHER 5    /* A number of philosophers must be more than 2. */
 
-code (*ret)(int);
+__code (*ret)(int);
 void *env;
 
 PhilsPtr phils_list = NULL;
 
-code run(PhilsPtr self)
+__code run(PhilsPtr self)
 {
 	goto thinking(self);
 }
 
-code init_final(PhilsPtr self)
+__code init_final(PhilsPtr self)
 {
 	self->right = phils_list;
 	self->right_fork = phils_list->left_fork;
@@ -24,7 +26,7 @@
 	goto run(phils_list);
 }
 
-code init_phils2(PhilsPtr self, int count, int id)
+__code init_phils2(PhilsPtr self, int count, int id)
 {
 	PhilsPtr tmp_self;
 
@@ -50,7 +52,7 @@
 	}
 }
 
-code init_fork2(PhilsPtr self, int count, int id)
+__code init_fork2(PhilsPtr self, int count, int id)
 {
 	ForkPtr tmp_fork;
 
@@ -65,7 +67,7 @@
 	goto init_phils2(self, count, id);
 }
 
-code init_phils1(ForkPtr fork, int count, int id)
+__code init_phils1(ForkPtr fork, int count, int id)
 {
 	PhilsPtr self;
 
@@ -87,7 +89,7 @@
 	goto init_fork2(self, count, id);
 }
 
-code init_fork1(int count)
+__code init_fork1(int count)
 {
 	ForkPtr fork;
 	int id = 1;
@@ -102,16 +104,16 @@
 	goto init_phils1(fork, count, id);
 }
 
-code die(char *err)
+__code die(char *err)
 {
 	printf("%s\n", err);
-	goto ret(1), env;
+	goto ret(1);
 }
 
 int main(void)
 {
-	ret = return;
-	env = environment;
+	ret = __return;
+	env = __environment;
 
 	goto init_fork1(NUM_PHILOSOPHER);
 }