From b0ef26bb582b7511fe71173ee74df080f043d5de Mon Sep 17 00:00:00 2001
From: Dmitry Pisklov <dpisklov@gmail.com>
Date: Thu, 28 May 2020 17:06:58 +0100
Subject: [PATCH] fix longSize() implementation for closed map

---
 .../java/net/openhft/chronicle/map/VanillaChronicleMap.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java b/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
index 23dda6548..a49f79934 100755
--- a/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
+++ b/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
@@ -203,7 +203,7 @@ public class VanillaChronicleMap<K, V, R>
     @Override
     public final long longSize() {
         long result = 0L;
-        if (!isClosed())
+        if (!isClosed() && this.cxt != null)
             try (IterationContext<K, V, ?> c = iterationContext()) {
                 for (int segmentIndex = 0; segmentIndex < segments(); segmentIndex++) {
                     c.initSegmentIndex(segmentIndex);