RUBY_GC_INFO      110 iseq.c             RUBY_GC_INFO("%s @ %s\n", RSTRING_PTR(iseq->body->location.label), RSTRING_PTR(iseq->body->location.path));
RUBY_GC_INFO      509 vm.c               RUBY_GC_INFO("env->env\n");
RUBY_GC_INFO     1981 vm.c               RUBY_GC_INFO("-------------------------------------------------\n");
RUBY_GC_INFO     2308 vm.c           	    RUBY_GC_INFO("main thread\n");