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-rw-r--r--passes/opt/opt_rmports.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/passes/opt/opt_rmports.cc b/passes/opt/opt_rmports.cc
index 5522dfa8e..a7a2df866 100644
--- a/passes/opt/opt_rmports.cc
+++ b/passes/opt/opt_rmports.cc
@@ -69,6 +69,8 @@ struct OptRmportsPass : public Pass {
{
auto w1 = s1[i].wire;
auto w2 = s2[i].wire;
+ if( (w1 == NULL) || (w2 == NULL) )
+ continue;
//log(" conn %s, %s\n", w1->name.c_str(), w2->name.c_str());