Index: src/ResolvExpr/Unify.cc
===================================================================
--- src/ResolvExpr/Unify.cc	(revision f7cb0bc76af10982d6f4f34f060acc53a8dc27f9)
+++ src/ResolvExpr/Unify.cc	(revision b1e63ac54a1b3b3705d130858c9772e8b84c867f)
@@ -42,4 +42,5 @@
 		virtual void visit(PointerType *pointerType);
 		virtual void visit(ArrayType *arrayType);
+		virtual void visit(ReferenceType *refType);
 		virtual void visit(FunctionType *functionType);
 		virtual void visit(StructInstType *aggregateUseType);
@@ -428,4 +429,12 @@
 	}
 
+	void Unify::visit(ReferenceType *refType) {
+		if ( ReferenceType *otherRef = dynamic_cast< ReferenceType* >( type2 ) ) {
+			result = unifyExact( refType->get_base(), otherRef->get_base(), env, needAssertions, haveAssertions, openVars, WidenMode( false, false ), indexer );
+			markAssertions( haveAssertions, needAssertions, refType );
+			markAssertions( haveAssertions, needAssertions, otherRef );
+		} // if
+	}
+
 	void Unify::visit(ArrayType *arrayType) {
 		ArrayType *otherArray = dynamic_cast< ArrayType* >( type2 );