Xiretza 3aa10e90ba modtools: fix use-after-free of cell pointers in ModWalker ...

cell_inputs and cell_outputs retain cell pointers as their keys across
invocations of setup(), which may however be invalidated in the meantime
(as happens in e.g. passes/opt/share.cc:1432). A later rehash of the
dicts (caused by inserting in ModWalker::add_wire()) will cause them to
be dereferenced.

2021-03-18 13:50:13 +01:00

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