From bc123dc79b865dcacdb6993e684a34c3befaea11 Mon Sep 17 00:00:00 2001
From: Nuno Lopes <nlopes@microsoft.com>
Date: Tue, 5 Jan 2016 14:10:32 +0000
Subject: [PATCH] fix build with c++98 compilers

---
 src/math/automata/automaton.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/math/automata/automaton.h b/src/math/automata/automaton.h
index 2a4c964f9..e7d7c8bfb 100644
--- a/src/math/automata/automaton.h
+++ b/src/math/automata/automaton.h
@@ -476,7 +476,7 @@ public:
         get_moves(state, m_delta_inv, mvs, epsilon_closure);
     }
 
-    template<class D = default_display>
+    template<class D>
     std::ostream& display(std::ostream& out, D& displayer = D()) const {
         out << "init: " << init() << "\n";
         out << "final: ";