1 files changed, 4 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index e828e917ba..1afa1b2914 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -474,6 +474,10 @@ typedef struct rb_vm_struct {
 #define VM_DEBUG_BP_CHECK 0
 #endif
 
+#ifndef VM_DEBUG_VERIFY_METHOD_CACHE
+#define VM_DEBUG_VERIFY_METHOD_CACHE 0
+#endif
+
 typedef struct rb_control_frame_struct {
     VALUE *pc;			/* cfp[0] */
     VALUE *sp;			/* cfp[1] */