* io.c (rb_io_ungetc): raise an exception at unread stream to

  avoid unspecified behavior.  [ruby-dev:22330]

* test/ruby/test_system.rb (test_syntax): glob relatively from
  __FILE__.


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@5261 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 7 deletions

diff --git a/test/ruby/test_system.rb b/test/ruby/test_system.rb
index 71eb7ad18..a19f6ef9b 100644
--- a/test/ruby/test_system.rb
+++ b/test/ruby/test_system.rb
@@ -54,15 +54,11 @@ class TestSystem < Test::Unit::TestCase
 
     File.unlink "script_tmp" or `/bin/rm -f "script_tmp"`
     File.unlink "script_tmp.bak" or `/bin/rm -f "script_tmp.bak"`
+  end
 
-    if (dir = File.dirname(File.dirname($0))) == '.'
-      dir = ""
-    else
-      dir << "/"
-    end
-
+  def test_syntax
     assert_nothing_raised(Exception) do
-      for script in Dir["#{dir}{lib,sample,ext}/**/*.rb"]
+      for script in Dir[File.expand_path("../../../{lib,sample,ext}/**/*.rb", __FILE__)]
         valid_syntax? IO::read(script), script
       end
     end