rb_zstream_closed_p  108 ext/zlib/zlib.c static VALUE rb_zstream_closed_p(VALUE);
rb_zstream_closed_p 4312 ext/zlib/zlib.c     rb_define_method(cZStream, "closed?", rb_zstream_closed_p, 0);
rb_zstream_closed_p 4313 ext/zlib/zlib.c     rb_define_method(cZStream, "ended?", rb_zstream_closed_p, 0);