Index: src/CodeGen/CodeGenerator.cc
===================================================================
--- src/CodeGen/CodeGenerator.cc	(revision 25a054f2026506f0b8d821cfc29790b22ca54608)
+++ src/CodeGen/CodeGenerator.cc	(revision e551c694786a9c6aeacf3d063592a5011967933a)
@@ -458,6 +458,5 @@
 		output << "__builtin_offsetof(";
 		output << genType( offsetofExpr->get_type(), "" );
-		output << ", ";
-		offsetofExpr->get_member()->accept( *this );
+		output << ", " << mangleName( offsetofExpr->get_member() );
 		output << ")";
 	}