proc.c: replicate method env

* proc.c (proc_binding): replicate env from method object, and
  allocate the local variable area for the iseq local table.
  [ruby-core:68673] [Bug #11012]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50111 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 14 insertions, 0 deletions

diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index c88f3c88fe..960c4270d1 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -886,4 +886,18 @@ class TestMethod < Test::Unit::TestCase
       obj.bar
     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)
+  end
 end