rb_st_copy 338 class.c RCLASS_IV_TBL(clone) = rb_st_copy(clone, RCLASS_IV_TBL(orig)); rb_st_copy 391 class.c RCLASS_IV_TBL(clone) = rb_st_copy(clone, RCLASS_IV_TBL(klass)); rb_st_copy 1599 internal.h st_table *rb_st_copy(VALUE obj, struct st_table *orig_tbl);