share: fix infinite loop in find_terminal_bits on $mux loop #4895
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Hmm maybe this should be an assertion failure actually because it's like finding a loop with |
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Previously,
shareassumed there is no combinational loop composed of$muxcells when collecting terminal bits. This PR uses the already implementedvisited_cellsto avoid running forever in the case of a$muxcell loop. Fixes #4260