From f9f70383fa2c00742565ee4f4e9aaab7c6640a8a Mon Sep 17 00:00:00 2001
From: Wilson Snyder <wsnyder@wsnyder.org>
Date: Tue, 24 Jun 2025 17:29:44 -0400
Subject: [PATCH] Fix instability in non-data type internal error

---
 src/V3LinkDot.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/V3LinkDot.cpp b/src/V3LinkDot.cpp
index 92d9154b9..e93f321e0 100644
--- a/src/V3LinkDot.cpp
+++ b/src/V3LinkDot.cpp
@@ -2611,8 +2611,10 @@ class LinkDotResolveVisitor final : public VNVisitor {
         if (oldp->wouldBreak(newp)) {
             newp->v3error(
                 "Data type used where a non-data type is expected: " << newp->prettyNameQ());
+            oldp->replaceWith(new AstConst{newp->fileline(), AstConst::BitFalse{}});
+        } else {
+            oldp->replaceWith(newp);
         }
-        oldp->replaceWith(newp);
     }
 
     // Marks the current module to be revisited after the initial AST iteration