From 917af2401587558cbfafdccb5f057d208d35140e Mon Sep 17 00:00:00 2001
From: Jonathan Mace <jonathan.c.mace@gmail.com>
Date: Wed, 8 Jul 2020 11:44:00 +0200
Subject: [PATCH] Update BaggageBuffersContents.java

Add bagKey null check
---
 .../tracingplane/baggage_buffers/BaggageBuffersContents.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/baggage-buffers/src/main/java/edu/brown/cs/systems/tracingplane/baggage_buffers/BaggageBuffersContents.java b/baggage-buffers/src/main/java/edu/brown/cs/systems/tracingplane/baggage_buffers/BaggageBuffersContents.java
index dfd119a..cd84e58 100644
--- a/baggage-buffers/src/main/java/edu/brown/cs/systems/tracingplane/baggage_buffers/BaggageBuffersContents.java
+++ b/baggage-buffers/src/main/java/edu/brown/cs/systems/tracingplane/baggage_buffers/BaggageBuffersContents.java
@@ -74,7 +74,7 @@ public class BaggageBuffersContents implements BaggageContents {
 
     /** Get the value mapped to a key, or null if no mapping */
     public Bag get(BagKey key) {
-        return bags == null ? null : bags.get(key);
+        return (bags == null || key == null) ? null : bags.get(key);
     }
 
     /** Remove the mapping for the specified key. Returns this object */