SCM_WEAK_VECTOR_P 2787 src/extlib.c     if (!SCM_WEAK_VECTOR_P(wv_scm)) Scm_Error("weak vector required, but got %S", wv_scm);
SCM_WEAK_VECTOR_P 2814 src/extlib.c     if (!SCM_WEAK_VECTOR_P(wv_scm)) Scm_Error("weak vector required, but got %S", wv_scm);
SCM_WEAK_VECTOR_P 2847 src/extlib.c     if (!SCM_WEAK_VECTOR_P(wv_scm)) Scm_Error("weak vector required, but got %S", wv_scm);