1 files changed, 6 insertions, 1 deletions
diff --git a/source/slang/syntax.cpp b/source/slang/syntax.cpp
index ab4a5f94c..3bccf51ce 100644
--- a/source/slang/syntax.cpp
+++ b/source/slang/syntax.cpp
@@ -856,7 +856,12 @@ void Type::accept(IValVisitor* visitor, void* extra)
 
     Type* ErrorType::CreateCanonicalType()
     {
-        return  this;
+        return this;
+    }
+
+    RefPtr<Val> ErrorType::SubstituteImpl(SubstitutionSet /*subst*/, int* /*ioDiff*/)
+    {
+        return this;
     }
 
     int ErrorType::GetHashCode()