From 6097f4481137154eb71bfcc4f48b95b6decbf5e4 Mon Sep 17 00:00:00 2001
From: Aisha Halim <aishahalim@gmail.com>
Date: Tue, 31 May 2016 14:05:13 -0700
Subject: [PATCH] ArrayComparisonFailure serialization incompatibility fix: Add
 back field fCause, initialize and use in the constructor (via initCause()) to
 avoid npe and unused field warnings, respectively Issue #1178, #976

---
 .../java/org/junit/internal/ArrayComparisonFailure.java     | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/junit/internal/ArrayComparisonFailure.java b/src/main/java/org/junit/internal/ArrayComparisonFailure.java
index a26b65de874d..0b24cb865cc2 100644
--- a/src/main/java/org/junit/internal/ArrayComparisonFailure.java
+++ b/src/main/java/org/junit/internal/ArrayComparisonFailure.java
@@ -16,11 +16,12 @@ public class ArrayComparisonFailure extends AssertionError {
 
     /*
      * We have to use the f prefix until the next major release to ensure
-     * serialization compatibility. 
+     * serialization compatibility.
      * See https://github.com/junit-team/junit4/issues/976
      */
     private final List<Integer> fIndices = new ArrayList<Integer>();
     private final String fMessage;
+    private final AssertionError fCause;
 
     /**
      * Construct a new <code>ArrayComparisonFailure</code> with an error text and the array's
@@ -32,7 +33,8 @@ public class ArrayComparisonFailure extends AssertionError {
      */
     public ArrayComparisonFailure(String message, AssertionError cause, int index) {
         this.fMessage = message;
-        initCause(cause);
+        this.fCause = cause;
+        initCause(fCause);
         addDimension(index);
     }