merges r24203 from trunk into ruby_1_9_1.

--
* io.c (io_read): should taint the result.   [ruby-dev:38826]

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@24290 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 776cf3414..04c0b5553 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1368,4 +1368,10 @@ class TestIO < Test::Unit::TestCase
       }
     }
   end
+
+  def test_tainted
+    t = make_tempfile
+    assert(File.read(t.path, 4).tainted?, '[ruby-dev:38826]')
+    assert(File.open(t.path) {|f| f.read(4)}.tainted?, '[ruby-dev:38826]')
+  end
 end