--- a/dpp.cbc	Wed Dec 16 15:16:11 2015 +0900
+++ b/dpp.cbc	Wed Dec 16 16:52:16 2015 +0900
@@ -6,41 +6,41 @@
 
 #include "dpp.h"
 
-code putdown_lfork(PhilsPtr self)
+__code putdown_lfork(PhilsPtr self)
 {
 	printf("%d: putdown_lfork:%d\n", self->id, self->left_fork->id);
 	self->left_fork->owner = NULL;
 	goto thinking(self);
 }
 
-code putdown_rfork(PhilsPtr self)
+__code putdown_rfork(PhilsPtr self)
 {
 	printf("%d: putdown_rfork:%d\n", self->id, self->right_fork->id);
 	self->right_fork->owner = NULL;
 	goto putdown_lfork(self);
 }
 
-code eating(PhilsPtr self)
+__code eating(PhilsPtr self)
 {
 	printf("%d: eating\n", self->id);
 	goto putdown_rfork(self);
 }
 
 /* waiting for right fork */
-code hungry2(PhilsPtr self)
+__code hungry2(PhilsPtr self)
 {
 	printf("%d: hungry2\n", self->id);
 	goto pickup_rfork(self);
 }
 
 /* waiting for left fork */
-code hungry1(PhilsPtr self)
+__code hungry1(PhilsPtr self)
 {
 	printf("%d: hungry1\n", self->id);
 	goto pickup_lfork(self);
 }
 
-code pickup_rfork(PhilsPtr self)
+__code pickup_rfork(PhilsPtr self)
 {
 	if (self->right_fork->owner == NULL) {
 		printf("%d: pickup_rfork:%d\n", self->id, self->right_fork->id);
@@ -51,7 +51,7 @@
 	}
 }
 
-code pickup_lfork(PhilsPtr self)
+__code pickup_lfork(PhilsPtr self)
 {
 	if (self->left_fork->owner == NULL) {
 		printf("%d: pickup_lfork:%d\n", self->id, self->left_fork->id);
@@ -62,7 +62,7 @@
 	}
 }
 
-code thinking(PhilsPtr self)
+__code thinking(PhilsPtr self)
 {
 	printf("%d: thinking\n", self->id);
 	goto hungry1(self);