+ return dr;
+}
+
+/*
+ * Set the specified `errcode' and `errstring' into a UserInfo-1
+ * external to be returned to the client in accordance with Z35.90
+ * Implementor Agreement 5 (Returning diagnostics in an InitResponse):
+ * http://lcweb.loc.gov/z3950/agency/agree/initdiag.html
+ */
+static Z_External *init_diagnostics(ODR odr, int error, char *addinfo)
+{
+ Z_External *x, *x2;
+ oident oid;
+ Z_OtherInformation *u;
+ Z_OtherInformationUnit *l;
+ Z_DiagnosticFormat *d;
+ Z_DiagnosticFormat_s *e;
+
+ x = (Z_External*) odr_malloc(odr, sizeof *x);
+ x->descriptor = 0;
+ x->indirect_reference = 0;
+ oid.proto = PROTO_Z3950;
+ oid.oclass = CLASS_USERINFO;
+ oid.value = VAL_USERINFO1;
+ x->direct_reference = odr_oiddup(odr, oid_getoidbyent(&oid));
+ x->which = Z_External_userInfo1;
+
+ u = odr_malloc(odr, sizeof *u);
+ x->u.userInfo1 = u;
+ u->num_elements = 1;
+ u->list = (Z_OtherInformationUnit**) odr_malloc(odr, sizeof *u->list);
+ u->list[0] = (Z_OtherInformationUnit*) odr_malloc(odr, sizeof *u->list[0]);
+ l = u->list[0];
+ l->category = 0;
+ l->which = Z_OtherInfo_externallyDefinedInfo;
+
+ x2 = (Z_External*) odr_malloc(odr, sizeof *x);
+ l->information.externallyDefinedInfo = x2;
+ x2->descriptor = 0;
+ x2->indirect_reference = 0;
+ oid.oclass = CLASS_DIAGSET;
+ oid.value = VAL_DIAG1;
+ x2->direct_reference = odr_oiddup(odr, oid_getoidbyent(&oid));
+ x2->which = Z_External_diag1;
+
+ d = (Z_DiagnosticFormat*) odr_malloc(odr, sizeof *d);
+ x2->u.diag1 = d;
+ d->num = 1;
+ d->elements = (Z_DiagnosticFormat_s**) odr_malloc (odr, sizeof *d->elements);
+ d->elements[0] = (Z_DiagnosticFormat_s*) odr_malloc (odr, sizeof *d->elements[0]);
+ e = d->elements[0];
+
+ e->which = Z_DiagnosticFormat_s_defaultDiagRec;
+ e->u.defaultDiagRec = justdiag(odr, error, addinfo);
+ return x;