* io.c (rb_io_reopen): clear read buffer.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@17100 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 0 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 6e6a27f015..313fc0c864 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1038,6 +1038,14 @@ class TestIO < Test::Unit::TestCase
         safe_4 { r.reopen(t.path) }
       end
     end
+
+    open(__FILE__) do |f|
+      f.gets
+      assert_nothing_raised {
+        f.reopen(t.path)
+        assert_equal("foo\n", f.gets)
+      }
+    end
   end
 
   def test_foreach