1 files changed, 4 insertions, 1 deletions
diff --git a/vm_core.h b/vm_core.h
index bb2ca597a4..86b2fe9311 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -149,6 +149,7 @@
 typedef unsigned long rb_num_t;
 
 enum ruby_tag_type {
+    RUBY_TAG_NONE       = 0x0,
     RUBY_TAG_RETURN	= 0x1,
     RUBY_TAG_BREAK	= 0x2,
     RUBY_TAG_NEXT	= 0x3,
@@ -159,6 +160,8 @@ enum ruby_tag_type {
     RUBY_TAG_FATAL	= 0x8,
     RUBY_TAG_MASK	= 0xf
 };
+
+#define TAG_NONE        RUBY_TAG_NONE
 #define TAG_RETURN	RUBY_TAG_RETURN
 #define TAG_BREAK	RUBY_TAG_BREAK
 #define TAG_NEXT	RUBY_TAG_NEXT
@@ -741,7 +744,7 @@ typedef struct rb_thread_struct {
     VALUE last_status; /* $? */
 
     /* passing state */
-    int state;
+    enum ruby_tag_type state;
 
     /* for rb_iterate */
     VALUE passed_block_handler;