Scm_U32VectorRef  396 ext/uvector/gauche/uvector.h extern ScmObj Scm_U32VectorRef(ScmU32Vector *vec, int index, ScmObj fallback);
Scm_U32VectorRef 2379 ext/uvector/uvlib.c SCM_RETURN(Scm_U32VectorRef(v, i, fallback));