# Getting "Pure virtual function called!" when drawing TLegend

_ROOT Version: 6.19
_Platform: OS 10.14.3

My code runs perfectly IF I don’t put the legend, because when I write

``````legend.Draw()
``````

My codes terminates and the terminals says:

libc++abi.dylib: Pure virtual function called!

However I can write the TLegend IF I don’t change the text size, which I really do need to do.

To change the text size I’m doing:

``````    entry = legend.GetListOfPrimitives().First() #for the header
entry.SetTextSize(0.03)
entry = legend.AddEntry(h1, material1 + ' with ' + source1 + ' as light source', 'F')
entry.SetTextSize(0.03)
``````

I’m not sure why this is a problem now, I have done it before, but if I comment those lines everything works

EDIT: I solved this by doing

``````legend.SetTextSize(0.3)
``````

``````    entry = legend.GetListOfPrimitives().First() #for the header