str_new3          627 string.c           VALUE str2 = str_new3(rb_obj_class(str), str);
str_new3          670 string.c       	    str = str_new3(klass, str);
str_new3         1500 string.c       	str2 = str_new3(rb_obj_class(str2), str2);
str_new3         6898 string.c           return str_new3(rb_cString, rb_id2str(id));