From c9ca0cd8926aad240de3be54988b174538e65077 Mon Sep 17 00:00:00 2001
From: Robert Haas <rhaas@postgresql.org>
Date: Thu, 12 Jun 2014 15:59:25 -0400
Subject: [PATCH] Fix context reset to not corrupt the context.

---
 src/backend/utils/mmgr/balloc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/backend/utils/mmgr/balloc.c b/src/backend/utils/mmgr/balloc.c
index e2da5fad86..ce56b0c249 100644
--- a/src/backend/utils/mmgr/balloc.c
+++ b/src/backend/utils/mmgr/balloc.c
@@ -793,6 +793,8 @@ BlockAllocatorReset(MemoryContext context)
 								   span->npages);
 				span = nextspan;
 			}
+			relptr_store(base, heap->spans[fclass],
+						 (BlockAllocatorSpan *) NULL);
 		}
 	}
 }
-- 
2.39.5