ref_scm          4058 src/extlib.c     ScmObj ref_scm;
ref_scm          4061 src/extlib.c     ref_scm = SCM_ARGREF(0);
ref_scm          4062 src/extlib.c     if (!SCM_READ_REFERENCE_P(ref_scm)) Scm_Error("read reference required, but got %S", ref_scm);
ref_scm          4063 src/extlib.c     ref = SCM_READ_REFERENCE(ref_scm);
ref_scm          4078 src/extlib.c     ScmObj ref_scm;
ref_scm          4081 src/extlib.c     ref_scm = SCM_ARGREF(0);
ref_scm          4082 src/extlib.c     if (!SCM_READ_REFERENCE_P(ref_scm)) Scm_Error("read reference required, but got %S", ref_scm);
ref_scm          4083 src/extlib.c     ref = SCM_READ_REFERENCE(ref_scm);