From 183c1a0fa1c9599f613ea8f4c54ed5229354714f Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 16 Dec 2015 05:25:46 +0000
Subject: Exception#backtrace may be nil if it is manually created

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53142 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/lib/test/unit/parallel.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'test/lib')

diff --git a/test/lib/test/unit/parallel.rb b/test/lib/test/unit/parallel.rb
index 6a319c3c3f..1e12d18457 100644
--- a/test/lib/test/unit/parallel.rb
+++ b/test/lib/test/unit/parallel.rb
@@ -139,7 +139,7 @@ module Test
         rescue Errno::EPIPE
         rescue Exception => e
           begin
-            trace = e.backtrace
+            trace = e.backtrace || ['unknown method']
             err = ["#{trace.shift}: #{e.message} (#{e.class})"] + trace.map{|t| t.prepend("\t") }
 
             _report "bye", Marshal.dump(err.join("\n"))
-- 
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