From 809013566ed1b6572ea028be3aad31f11d8f59df Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 17 Jun 2013 10:24:48 +0000
Subject: Write stdin_data only if it exists

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41356 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/envutil.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'test/ruby/envutil.rb')

diff --git a/test/ruby/envutil.rb b/test/ruby/envutil.rb
index ce7226f86d..732f0eeba8 100644
--- a/test/ruby/envutil.rb
+++ b/test/ruby/envutil.rb
@@ -62,7 +62,7 @@ module EnvUtil
     else
       th_stdout = Thread.new { out_p.read } if capture_stdout
       th_stderr = Thread.new { err_p.read } if capture_stderr && capture_stderr != :merge_to_stdout
-      in_p.write stdin_data.to_str
+      in_p.write stdin_data.to_str unless stdin_data.empty?
       in_p.close
       if (!th_stdout || th_stdout.join(timeout)) && (!th_stderr || th_stderr.join(timeout))
         stdout = th_stdout.value if capture_stdout
-- 
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