rb_vm_cref_replace_with_duplicated_cref 1311 eval.c             rb_using_module(rb_vm_cref_replace_with_duplicated_cref(), module);
rb_vm_cref_replace_with_duplicated_cref 1447 eval.c             rb_using_module(rb_vm_cref_replace_with_duplicated_cref(), module);
rb_vm_cref_replace_with_duplicated_cref  277 eval_intern.h  rb_cref_t *rb_vm_cref_replace_with_duplicated_cref(void);