strm2oas lef/def/gds collect drops cells referenced by sky130 spare

[stefanottili]

Test-case sent by mail.

[stefanottili]

It seems my mail got stuck in my outbox, so here's the tarfile of the test-case.
test_strm2oas.tgz

[klayoutmatthias]

I had not considered that case that a COMPONENT replacement cell would use other COMPONENT replacements as child cells. This is a more basic issue of the "create_multi_mapping" function.

[klayoutmatthias]

I see your other point regarding the XOR results: one shape appears in the XOR output on layer 236/0 which is a false positive. That is a bug in the optimization we introduced: A cell is skipped when entirely covered by a box. That needs variant building as in one cell this is the case while in the other it isn't.

I will try to include a fix in this ticket too.

Matthias