* proc.c: fix issues caused by binding created from Method#to_proc.

  [Bug #11163]
* vm.c (vm_cref_new_toplevel): export as rb_vm_cref_new_toplevel().
* test/ruby/test_method.rb: add some assersions.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50592 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 9 deletions

diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index 960c4270d1..d1cde99ab4 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -887,17 +887,25 @@ class TestMethod < Test::Unit::TestCase
     end
   end
 
+  class C
+    D = "Const_D"
+    def foo
+      a = b = c = 12345
+    end
+  end
+
   def test_to_proc_binding
     bug11012 = '[ruby-core:68673] [Bug #11012]'
-    class << (obj = Object.new)
-      src = 1000.times.map {|i|"v#{i} = nil"}.join("\n")
-      eval("def foo()\n""#{src}\n""end")
-    end
 
-    b = obj.method(:foo).to_proc.binding
-    b.local_variables.each_with_index {|n, i|
-      b.local_variable_set(n, i)
-    }
-    assert_equal([998, 999], %w[v998 v999].map {|n| b.local_variable_get(n)}, bug11012)
+    b = C.new.method(:foo).to_proc.binding
+    assert_equal([], b.local_variables)
+    assert_equal("Const_D", b.eval("D")) # Check CREF
+
+    assert_raise(NameError){ b.local_variable_get(:foo) }
+    assert_equal(123, b.local_variable_set(:foo, 123))
+    assert_equal(123, b.local_variable_get(:foo))
+    assert_equal(456, b.local_variable_set(:bar, 456))
+    assert_equal(123, b.local_variable_get(:foo))
+    assert_equal(456, b.local_variable_get(:bar))
   end
 end