From e780935af7cbef9a49e208cf9200b7149b8c3ff1 Mon Sep 17 00:00:00 2001
From: mszelwiga <mszelwiga@internships.antmicro.com>
Date: Fri, 22 Nov 2024 16:28:18 +0100
Subject: [PATCH] Add check for nullptr dereference in process_port

---
 src/frontends/systemverilog/uhdm_ast.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/frontends/systemverilog/uhdm_ast.cc b/src/frontends/systemverilog/uhdm_ast.cc
index ed04cb736..c93b46e16 100644
--- a/src/frontends/systemverilog/uhdm_ast.cc
+++ b/src/frontends/systemverilog/uhdm_ast.cc
@@ -4997,6 +4997,8 @@ void UhdmAst::process_port()
     std::vector<AST::AstNode *> unpacked_ranges; // comes after wire name
     if (lowConn_h) {
         vpiHandle actual_h = vpi_handle(vpiActual, lowConn_h);
+        if (!actual_h)
+            log_error("vpiPort doesn't contain vpiActual in it's subtree. Aborting.\n");
         auto actual_type = vpi_get(vpiType, actual_h);
         switch (actual_type) {
         case vpiModport: {