From 4af84bfaada4b83e930dd7352f0eaa96c2207663 Mon Sep 17 00:00:00 2001
From: Cary R <cygcary@yahoo.com>
Date: Tue, 24 Feb 2026 22:14:32 -0800
Subject: [PATCH] Fix sdf_interconnect4 failure and reenable

---
 ivtest/vvp_tests/sdf_interconnect4.json | 2 +-
 vvp/vpi_priv.cc                         | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/ivtest/vvp_tests/sdf_interconnect4.json b/ivtest/vvp_tests/sdf_interconnect4.json
index 283899c0e..5bb7ea12a 100644
--- a/ivtest/vvp_tests/sdf_interconnect4.json
+++ b/ivtest/vvp_tests/sdf_interconnect4.json
@@ -1,5 +1,5 @@
 {
-    "type"          : "EF",
+    "type"          : "normal",
     "source"        : "sdf_interconnect4.v",
     "iverilog-args" : [ "-Ttyp", "-ginterconnect", "-gspecify" ],
     "gold"   : "sdf_interconnect4",
diff --git a/vvp/vpi_priv.cc b/vvp/vpi_priv.cc
index 6f7882cc5..c3aabdfa9 100644
--- a/vvp/vpi_priv.cc
+++ b/vvp/vpi_priv.cc
@@ -1818,7 +1818,9 @@ vpiHandle vpi_handle_multi(PLI_INT32 type,
 			      prev = vvp_net_ptr_t(nullptr, 0);
 			} else {
 			      prev = previous_node;
-			      cur = prev.ptr()->port[prev.port()];
+			      if (prev.ptr()) {
+				    cur = prev.ptr()->port[prev.port()];
+			      }
 			}
 		  }