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I have a LEF where I've put a property on a VIA in LEF. When I load this into KLayout I get:
ERROR: ./util/def2gds.py:10: Expected token: END (line=1978, cell=, file=14lppxl_13m_tech.lef) in Layout.read
./util/def2gds.py:10 (class exceptions.RuntimeError)
The relevant line is:
PROPERTY OR_DEFAULT 1 ;
I looked at dbLEFImporter.cc and I didn't spot any support for properties on vias. I can generate a test case if needed but this seems to be an omission. No other tools have had an issue with this LEF.