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-rw-r--r--common/sdf.cc4
1 files changed, 4 insertions, 0 deletions
diff --git a/common/sdf.cc b/common/sdf.cc
index 07773a6a..769728e4 100644
--- a/common/sdf.cc
+++ b/common/sdf.cc
@@ -253,9 +253,13 @@ void Context::writeSDF(std::ostream &out) const
TimingPortClass cls = getPortTimingClass(ci, port.first, clockCount);
if (cls == TMG_IGNORE)
continue;
+ if (port.second.net == nullptr)
+ continue; // Ignore disconnected ports
if (port.second.type != PORT_IN) {
// Add combinational paths to this output (or inout)
for (auto other : ci->ports) {
+ if (other.second.net == nullptr)
+ continue;
if (other.second.type == PORT_OUT)
continue;
DelayInfo dly;