1 files changed, 0 insertions, 5 deletions
diff --git a/vm_core.h b/vm_core.h
index 68f246521c..4d1780f303 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -586,11 +586,6 @@ enum vm_special_object_type {
 /* inline cache */
 typedef struct iseq_inline_cache_entry *IC;
 
-extern VALUE ruby_vm_global_state_version;
-
-#define GET_VM_STATE_VERSION() (ruby_vm_global_state_version)
-#define INC_VM_STATE_VERSION() \
-  (ruby_vm_global_state_version = (ruby_vm_global_state_version+1) & 0x8fffffff)
 void rb_vm_change_state(void);
 
 typedef VALUE CDHASH;