* include/ruby/ruby.h: make Symbol objects frozen.

  [Feature #8906]
  I want to freeze this good day, too.
* test/ruby/test_eval.rb: catch up this change.
* test/ruby/test_symbol.rb: add a test to check frozen symbols.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42974 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 0 deletions

diff --git a/test/ruby/test_symbol.rb b/test/ruby/test_symbol.rb
index 214158e864..7f261b68bb 100644
--- a/test/ruby/test_symbol.rb
+++ b/test/ruby/test_symbol.rb
@@ -198,4 +198,12 @@ class TestSymbol < Test::Unit::TestCase
   def test_singleton_method
     assert_raise(TypeError) { a = :foo; def a.foo; end }
   end
+
+  def test_frozen_symbol
+    assert_equal(true, :foo.frozen?)
+    assert_equal(true, :each.frozen?)
+    assert_equal(true, :+.frozen?)
+    assert_equal(true, "foo#{Time.now.to_i}".to_sym.frozen?)
+    assert_equal(true, :foo.to_sym.frozen?)
+  end
 end