add copy-on-write semantics to amount.cc; cuts object creation by 5x

1 files changed, 4 insertions, 0 deletions

diff --git a/binary.h b/binary.h
index 4b502df5..a1ab60c2 100644
--- a/binary.h
+++ b/binary.h
@@ -3,6 +3,8 @@
 
 #include "parser.h"
 
+#include <deque>
+
 namespace ledger {
 
 class binary_parser_t : public parser_t
@@ -16,6 +18,8 @@ class binary_parser_t : public parser_t
 			     const std::string * original_file = NULL);
 };
 
+extern std::deque<amount_t::bigint_t *> bigints;
+
 void write_binary_journal(std::ostream&	 out,
 			  journal_t *	 journal,
 			  strings_list * files = NULL);