* vm_method.c (rb_method_entry_make): fix WB miss.

  Note that rb_method_entry_t::klass is not constified.
  We may  constify this field.
* test/ruby/test_alias.rb: add a test.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44234 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 13 insertions, 0 deletions

diff --git a/test/ruby/test_alias.rb b/test/ruby/test_alias.rb
index 0fd8d5f89b..32aa92a8d9 100644
--- a/test/ruby/test_alias.rb
+++ b/test/ruby/test_alias.rb
@@ -1,4 +1,5 @@
 require 'test/unit'
+require_relative 'envutils'
 
 class TestAlias < Test::Unit::TestCase
   class Alias0
@@ -119,4 +120,16 @@ class TestAlias < Test::Unit::TestCase
   def test_super_in_aliased_module_method # fails in 1.8
     assert_equal([:Base, :M], SuperInAliasedModuleMethod::Derived.new.bar)
   end
+
+  def test_alias
+    assert_normal_exit %q{
+      require 'stringio'
+      GC.verify_internal_consistency
+      GC.start
+      class StringIO
+        alias_method :read_nonblock, :sysread
+      end
+      GC.verify_internal_consistency
+    }
+  end
 end