From 14be536c83a5d4c4cc796df73f569abf9d6bba5c Mon Sep 17 00:00:00 2001
From: Edmund Lam <elam@hudson-trading.com>
Date: Wed, 8 Jul 2026 10:18:51 -0400
Subject: [PATCH] UASSERT_OBJ

---
 src/V3Param.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/V3Param.cpp b/src/V3Param.cpp
index 68fe481bd..e7eeef45a 100644
--- a/src/V3Param.cpp
+++ b/src/V3Param.cpp
@@ -1323,7 +1323,7 @@ class ParamProcessor final {
                         if (!structp) break;
                         AstMemberDType* const foundMemp = VN_CAST(
                             m_memberMap.findMember(structp, fieldRefp->name()), MemberDType);
-                        if (!foundMemp) break;
+                        UASSERT_OBJ(foundMemp, outerDotp, "member not found in struct/union");
                         if (!foundMemp->subDTypep()) break;
                         totalLsb += foundMemp->lsb();
                         sliceWidth = foundMemp->width();