* io.c (ioctl_narg_len, linux_iocparm_len): reinstantiate linux

  specific narg length calculation.
* test/ruby/test_io.rb (test_ioctl_linux2): add new test for old and
  unstructured ioctl.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33839 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 0 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 8899994897..01b3e681e5 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2123,6 +2123,19 @@ End
     assert_equal(File.size(__FILE__), buf.unpack('i!')[0])
   end
 
+  def test_ioctl_linux2
+    return if /linux/ !~ RUBY_PLATFORM
+    return if /^i?86|^x86_64/ !~ RUBY_PLATFORM
+
+    File.open('/dev/tty') { |f|
+      tiocgwinsz=0x5413
+      winsize=""
+      assert_nothing_raised {
+        f.ioctl(tiocgwinsz, winsize)
+      }
+    }
+  end
+
   def test_setpos
     mkcdtmpdir {
       File.open("tmp.txt", "w") {|f|