* test/ruby/test_exception.rb: fix thread issues.

* use Queue instead of a local variable for synchronization.
  * join created thread to soleve leaking threads warning.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56150 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Tue Sep 13 18:37:08 2016  Koichi Sasada  <ko1@atdot.net>
+
+	* test/ruby/test_exception.rb: fix thread issues.
+	  * use Queue instead of a local variable for synchronization.
+	  * join created thread to soleve leaking threads warning.
+
 Tue Sep 13 16:07:26 2016  Kazuki Yamaguchi  <k@rhe.jp>
 
 	* string.c (rb_str_set_len): The buffer overflow check is wrong. The

test/ruby/test_exception.rb

@@ -723,9 +723,9 @@ end.join
     bug12741 = '[ruby-core:77222] [Bug #12741]'
 
     x = Thread.current
-    a = false
+    q = Queue.new
     y = Thread.start do
-      Thread.pass until a
+      q.pop
       begin
         raise "caller's cause"
       rescue
@@ -737,9 +737,11 @@ end.join
       raise bug12741
     rescue
       e = assert_raise_with_message(RuntimeError, "stop") do
-        a = true
+        q.push(true)
         sleep 1
       end
+    ensure
+      y.join
     end
     assert_equal("caller's cause", e.cause.message)
   end