CIF, error when changing layer name while file open in KLayout

[electronum]

The error appears whenever: the cell layer name L <name>; is changed to a new layer name not yet present in the file (while opened) and reloading it in KLayout.

The error does not occur when closing and re-opening the file.

Tested in KLayout Viewer and Editor 0.25.8 and 0.25.9

Internal error: ../../src/db/db/dbLayout.cc:1616 m_layer_states [index] == Free was not true (line=2, Cell=C1)

Minimum working example

DS 1 100 1;
L L0;
B 100 50 0 0;
DF;

E

LayerTest.zip

Steps to reproduce

• Open file in KLayout
• Change the layer L L0; to something else (example L L1;)
• Save the file
• Confirm reloading the file in KLayout

[klayoutmatthias]

Thanks for this nicely prepared bug report :-)

[electronum]

no problem 👌