It should be ArgumentError that

  Regexp.union(
    "a",
    Regexp.new("\x80".force_encoding("euc-jp")),
    Regexp.new("\x80".force_encoding("utf-8"))).


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@13724 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/bootstraptest/test_knownbug.rb b/bootstraptest/test_knownbug.rb
index 23a020a771..c2d0624bb8 100644
--- a/bootstraptest/test_knownbug.rb
+++ b/bootstraptest/test_knownbug.rb
@@ -45,3 +45,15 @@ assert_normal_exit %q{
 assert_normal_exit %q{
   Regexp.union("a", "a")
 }
+
+assert_equal 'ok', %q{
+  begin
+    Regexp.union(
+      "a",
+      Regexp.new("\x80".force_encoding("euc-jp")),
+      Regexp.new("\x80".force_encoding("utf-8")))
+    :ng
+  rescue ArgumentError
+    :ok
+  end
+}