From 7c034418cd22e894ac2b523f59d4442d34cb0ea6 Mon Sep 17 00:00:00 2001
From: Geoff Brown <gbrown@mozilla.com>
Date: Mon, 1 Dec 2014 20:37:09 -0800
Subject: [PATCH] Bug 1093137 - Log stack trace for Robocop exceptions;
 r=chmanchester

---
 build/mobile/robocop/FennecMochitestAssert.java | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/build/mobile/robocop/FennecMochitestAssert.java b/build/mobile/robocop/FennecMochitestAssert.java
index b373b0bf6a6..918f576fdd8 100644
--- a/build/mobile/robocop/FennecMochitestAssert.java
+++ b/build/mobile/robocop/FennecMochitestAssert.java
@@ -4,6 +4,9 @@
 
 package org.mozilla.gecko;
 
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.io.Writer;
 import java.util.LinkedList;
 
 import android.os.SystemClock;
@@ -34,7 +37,10 @@ public class FennecMochitestAssert implements Assert {
     }
 
     public void dumpLog(String message, Throwable t) {
-        mLogger.error(message + " - " + t.toString());
+        Writer sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+        t.printStackTrace(pw);
+        mLogger.error(message + " - " + sw.toString());
     }
 
     /** Write information to a logfile and logcat */