From e7bfbc80bbaca547167d645be11db24c8922385f Mon Sep 17 00:00:00 2001
From: Burak Yucesoy <burak@citusdata.com>
Date: Tue, 29 May 2018 11:37:56 +0300
Subject: [PATCH] Fix PostgreSQL 11 build failure

---
 hll.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/hll.c b/hll.c
index 8304e45..2740df6 100644
--- a/hll.c
+++ b/hll.c
@@ -2756,11 +2756,19 @@ setup_multiset(MemoryContext rcontext)
     MemoryContext oldcontext;
     multiset_t * msp;
 
+#if (PG_VERSION_NUM >= 110000)
+    tmpcontext = AllocSetContextCreateExtended(rcontext,
+                                               "multiset",
+                                               ALLOCSET_DEFAULT_MINSIZE,
+                                               ALLOCSET_DEFAULT_INITSIZE,
+                                               ALLOCSET_DEFAULT_MAXSIZE);
+#else
     tmpcontext = AllocSetContextCreate(rcontext,
                                        "multiset",
                                        ALLOCSET_DEFAULT_MINSIZE,
                                        ALLOCSET_DEFAULT_INITSIZE,
                                        ALLOCSET_DEFAULT_MAXSIZE);
+#endif
 
     oldcontext = MemoryContextSwitchTo(tmpcontext);