Scm_U8VectorRef   168 ext/uvector/gauche/uvector.h extern ScmObj Scm_U8VectorRef(ScmU8Vector *vec, int index, ScmObj fallback);
Scm_U8VectorRef   583 ext/uvector/uvlib.c SCM_RETURN(Scm_U8VectorRef(v, i, fallback));