snf               660 src/class.c    static void class_numislots_set(ScmClass *klass, ScmObj snf)
snf               663 src/class.c        if (!SCM_INTP(snf) || (nf = SCM_INT_VALUE(snf)) < 0) {
snf               664 src/class.c            Scm_Error("invalid argument: %S", snf);