merges r21536 from trunk into ruby_1_9_1.

* vm.c (rb_vm_inc_const_missing_count, ruby_vm_const_missing_count):
  added.
* vm_insnhelper.h: ditto.
* variable.c (rb_const_get_0), insns.def: Constants should not be
  cached if const_missing is called.  [ruby-core:21059] [Bug #967]
* bootstraptest/test_class.rb: add a test.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21574 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 14 insertions, 0 deletions

diff --git a/bootstraptest/test_class.rb b/bootstraptest/test_class.rb
index 1c49b83037..ad2844106f 100644
--- a/bootstraptest/test_class.rb
+++ b/bootstraptest/test_class.rb
@@ -130,3 +130,17 @@ assert_equal "ok", %q{
     :ok
   end
 }, '[ruby-core:14378]'
+
+assert_equal '3', %q{
+  $i = 0
+  class C
+    def self.const_missing *args
+      $i+=1
+    end
+  end
+
+  3.times{
+    C::FOO
+  }
+  $i
+}