SYM              6713 compile.c          (void)int_param(&keyword->bits_start, params, SYM(kwbits));
SYM              6772 compile.c          VALUE arg_opt_labels = rb_hash_aref(params, SYM(opt));
SYM              6773 compile.c          VALUE keywords = rb_hash_aref(params, SYM(keyword));
SYM              6799 compile.c      #define INT_PARAM(F) int_param(&iseq->body->param.F, params, SYM(F))
SYM              6843 compile.c          if (Qtrue == rb_hash_aref(params, SYM(ambiguous_param0))) {
SYM              6847 compile.c          if (int_param(&i, params, SYM(kwrest))) {