* string.c (str_utf8_nth): fixed overrun. [ruby-core:26787]




git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25830 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/test/ruby/test_m17n.rb b/test/ruby/test_m17n.rb
index 1fa6d51288..e5c0acb034 100644
--- a/test/ruby/test_m17n.rb
+++ b/test/ruby/test_m17n.rb
@@ -867,6 +867,11 @@ class TestM17N < Test::Unit::TestCase
     assert_equal(nil, u("\xc2\xa1\xc2\xa2\xc2\xa3")[u("\xa1\xc2")])
     assert_raise(Encoding::CompatibilityError) { u("\xc2\xa1\xc2\xa2\xc2\xa3")[a("\xa1\xc2")] }
     assert_nil(e("\xa1\xa2\xa3\xa4")[e("\xa2\xa3")])
+
+    bug2379 = '[ruby-core:26787]'
+    assert_equal("\u{439}", "\u{439}"[0, 30], bug2379)
+    assert_equal("\u{439}", "a\u{439}"[1, 30], bug2379)
+    assert_equal("\u{439}", "a\u{439}bcdefghijklmnop"[1, 1][0, 1], bug2379)
   end
 
   def test_aset