* string.c (tr_trans): get rid of segfaults when has mulitbytes but

  source sets have no mulitbytes.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14148 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_m17n.rb b/test/ruby/test_m17n.rb
index f923173e5a..542c3d2b00 100644
--- a/test/ruby/test_m17n.rb
+++ b/test/ruby/test_m17n.rb
@@ -483,4 +483,10 @@ class TestM17N < Test::Unit::TestCase
     assert_raise(SyntaxError) { eval(s(%{/\\u{6666}#{}\\xc2\\xa0/})) }
     assert_nothing_raised { eval(u(%{/\\u{6666}#{}\\xc2\\xa0/})) }
   end
+
+  def test_tr
+    s = "\x81\x41".force_encoding("shift_jis")
+    assert_equal(s.tr("A", "B"), s)
+    assert_equal(s.tr_s("A", "B"), s)
+  end
 end