* io.c (io_fwrite): preserve errno. [ruby-core:27425]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@26253 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 14 insertions, 0 deletions

diff --git a/test/ruby/test_pipe.rb b/test/ruby/test_pipe.rb
index c3b4d29c0a..0ac921b9c2 100644
--- a/test/ruby/test_pipe.rb
+++ b/test/ruby/test_pipe.rb
@@ -15,4 +15,18 @@ class TestPipe < Test::Unit::TestCase
       r.close
     end
   end
+
+  def test_write
+    bug2559 = '[ruby-core:27425]'
+    a, b = IO.pipe
+    begin
+      a.close
+      assert_raises(Errno::EPIPE, bug2559) do
+        b.write("hi")
+      end
+    ensure
+      a.close if !a.closed?
+      b.close if !b.closed?
+    end
+  end
 end