1 files changed, 1 insertions, 0 deletions
diff --git a/vm_core.h b/vm_core.h
index 7526c2004e..2e501704e8 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -847,6 +847,7 @@ int rb_vm_get_sourceline(const rb_control_frame_t *);
 VALUE rb_name_err_mesg_new(VALUE obj, VALUE mesg, VALUE recv, VALUE method);
 void rb_vm_stack_to_heap(rb_thread_t *th);
 void ruby_thread_init_stack(rb_thread_t *th);
+int rb_vm_control_frame_id_and_class(const rb_control_frame_t *cfp, ID *idp, VALUE *klassp);
 
 void rb_gc_mark_machine_stack(rb_thread_t *th);