diff options
| -rw-r--r-- | passes/hierarchy/submod.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/passes/hierarchy/submod.cc b/passes/hierarchy/submod.cc index 349483778..7b5e110cb 100644 --- a/passes/hierarchy/submod.cc +++ b/passes/hierarchy/submod.cc @@ -141,7 +141,7 @@ struct SubmodWorker else { auto sig = sigmap(wire); for (auto c : sig.chunks()) - if (c.wire->port_output) { + if (c.wire && c.wire->port_output) { flags.is_ext_used = true; break; } |