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-rw-r--r--passes/techmap/techmap.cc6
1 files changed, 4 insertions, 2 deletions
diff --git a/passes/techmap/techmap.cc b/passes/techmap/techmap.cc
index 0b88e5910..6ac1d1113 100644
--- a/passes/techmap/techmap.cc
+++ b/passes/techmap/techmap.cc
@@ -413,8 +413,10 @@ struct TechmapWorker
if (autopurge) {
autopurge_ports.push_back(conn.first);
} else {
- apply_prefix(cell->name, const_cast<RTLIL::SigSpec&>(conn.second), module);
- port_signal_map.apply(const_cast<RTLIL::SigSpec&>(conn.second));
+ RTLIL::SigSpec new_conn = conn.second;
+ apply_prefix(cell->name, new_conn, module);
+ port_signal_map.apply(new_conn);
+ c->setPort(conn.first, std::move(new_conn));
}
}