Add FrozenError as a subclass of RuntimeError

FrozenError will be used instead of RuntimeError for exceptions
raised when there is an attempt to modify a frozen object. The
reason for this change is to differentiate exceptions related
to frozen objects from generic exceptions such as those generated
by Kernel#raise without an exception class.

From: Jeremy Evans <code@jeremyevans.net>
Signed-off-by: Urabe Shyouhei <shyouhei@ruby-lang.org>


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61131 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/test/ruby/test_thread.rb b/test/ruby/test_thread.rb
index 6e2f594970..9242f7f480 100644
--- a/test/ruby/test_thread.rb
+++ b/test/ruby/test_thread.rb
@@ -102,7 +102,7 @@ class TestThread < Test::Unit::TestCase
   def test_thread_variable_frozen
     t = Thread.new { }.join
     t.freeze
-    assert_raise(RuntimeError) do
+    assert_raise(FrozenError) do
       t.thread_variable_set(:foo, "bar")
     end
   end
@@ -547,7 +547,7 @@ class TestThread < Test::Unit::TestCase
   end
 
   def test_thread_local_security
-    assert_raise(RuntimeError) do
+    assert_raise(FrozenError) do
       Thread.new do
         Thread.current[:foo] = :bar
         Thread.current.freeze