From 192f968d29b78b55749e872422fd241fe74596b2 Mon Sep 17 00:00:00 2001
From: Ian Barwick <barwick@gmail.com>
Date: Fri, 15 Sep 2017 11:57:33 +0900
Subject: [PATCH] Workaround for 9.3

---
 compat-lsn.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 compat-lsn.h

diff --git a/compat-lsn.h b/compat-lsn.h
new file mode 100644
index 00000000..cc51b2a0
--- /dev/null
+++ b/compat-lsn.h
@@ -0,0 +1,27 @@
+/*-------------------------------------------------------------------------
+ *
+ * pg_lsn.h
+ *		Declarations for operations on log sequence numbers (LSNs) of
+ *		PostgreSQL.
+ *
+ *
+ * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/utils/pg_lsn.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PG_LSN_H
+#define PG_LSN_H
+
+#include "fmgr.h"
+#include "access/xlogdefs.h"
+
+#define DatumGetLSN(X) ((XLogRecPtr) DatumGetInt64(X))
+#define LSNGetDatum(X) (Int64GetDatum((int64) (X)))
+
+#define PG_GETARG_LSN(n)	 DatumGetLSN(PG_GETARG_DATUM(n))
+#define PG_RETURN_LSN(x)	 return LSNGetDatum(x)
+
+#endif							/* PG_LSN_H */