make_zombie      2095 gc.c               make_zombie(objspace, obj, (void (*)(void*))rb_io_fptr_finalize, fptr);
make_zombie      2206 gc.c           		    make_zombie(objspace, obj, dfree, data);
make_zombie      2295 gc.c           	make_zombie(objspace, obj, 0, 0);
make_zombie      2879 gc.c           		    make_zombie(objspace, (VALUE)p, RANY(p)->as.data.dfree, RANY(p)->as.data.data);