From ad93bc7fda1988e49b4e3a0d85344d7e3dc7df10 Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@mutabah.net>
Date: Sat, 21 May 2016 20:10:25 +0800
Subject: Parse - Updates for better memory efficiency (hopefully)

---
 src/expand/macro_rules.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/expand/macro_rules.cpp')

diff --git a/src/expand/macro_rules.cpp b/src/expand/macro_rules.cpp
index 562b1468..968bf5f9 100644
--- a/src/expand/macro_rules.cpp
+++ b/src/expand/macro_rules.cpp
@@ -19,7 +19,7 @@ class CMacroRulesExpander:
         auto mac = Parse_MacroRules(lex);
         mod.add_macro( false, ident, mac );
         
-        return box$( TTStreamO(TokenTree()) );
+        return ::std::unique_ptr<TokenStream>( new TTStreamO(TokenTree()) );
     }
 };
 
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