Assertion in stringrenderer when running text2image

[stweil]

While running the training for frk with a longer training text, I get assertions in stringrenderer.cpp for 5 of 12 fonts. They can be reproduced by running text2image for that text with a single language:

$ text2image --fonts_dir=/usr/share/fonts --font="Proclamate Light, Light" --text=../langdata/frk/frk.training_text --outputbase=/tmp/frk
Stripped 157 unrenderable words
Rendered page 0 to file /tmp/frk.tif
# ...
Rendered page 1163 to file /tmp/frk.tif
Stripped 57 unrenderable words
cluster_text.size() == start_byte_to_box.size():Error:Assert failed:in file ../training/stringrenderer.cpp, line 553

[Shreeshrii]

@stweil I think you mean fonts instead of languages in the above.

[stweil]

Yes, thanks. I fixed it in my original post.

[zdenop]

duplicate to #1781. Closing this because there are more information.