1 files changed, 4 insertions, 2 deletions
diff --git a/method.h b/method.h
index 5b6fe2d800..a5fa187df1 100644
--- a/method.h
+++ b/method.h
@@ -132,8 +132,9 @@ typedef struct rb_iseq_struct rb_iseq_t;
 #endif
 
 typedef struct rb_method_iseq_struct {
-    rb_iseq_t * iseqptr; /*!< iseq pointer, should be separated from iseqval */
+    const rb_iseq_t * iseqptr; /*!< iseq pointer, should be separated from iseqval */
     rb_cref_t * cref;          /*!< class reference, should be marked */
+    const rb_callable_method_entry_t *mandatory_only_cme;
 } rb_method_iseq_t; /* check rb_add_method_iseq() when modify the fields */
 
 typedef struct rb_method_cfunc_struct {
@@ -171,7 +172,8 @@ enum method_optimized_type {
 
 struct rb_method_definition_struct {
     BITFIELD(rb_method_type_t, type, VM_METHOD_TYPE_MINIMUM_BITS);
-    int alias_count : 28;
+    unsigned int iseq_overload: 1;
+    int alias_count : 27;
     int complemented_count : 28;
 
     union {