{
TGraphErrors *ge = new TGraphErrors(2);
ge->SetName("aaa"); // <<< without this it works
ge->SetPoint(1, 1, 1); ge->SetPoint(2, 2, 1);
ge->Draw("ap*");
gPad->Update();
ge->SavePrimitive(cout);
}
"By default, when a data point is outside the visible range along the Y axis the error bars are not drawn. Combined with other options, this option forces error bars' drawing for the data points outside the visible range along the Y axis."
A similar option already existed for histograms.