* vm_eval.c (make_no_method_execption): extract from

raise_method_missing().
* vm_eval.c (send_internal): remove inadvertent symbol creation
  from public_send.  based on a patch by Jeremy Evans <code AT
  jeremyevans.net> in [ruby-core:38576]. [Feature #5112]
* vm_insnhelper.c (vm_call_method): remove inadvertent symbol
  creation from send and __send__, too.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33419 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/-ext-/symbol/test_inadvertent_creation.rb

@@ -0,0 +1,44 @@
+require 'test/unit'
+require "-test-/symbol/symbol"
+
+module Test_Symbol
+  class TestInadvertent < Test::Unit::TestCase
+    def self.noninterned_name
+      th = Thread.current.object_id.to_s(36)
+      begin
+        name = "#{th}.#{rand(0x1000).to_s(16)}.#{Time.now.usec}"
+      end while Bug::Symbol.interned?(name)
+      name
+    end
+
+    def setup
+      @obj = Object.new
+    end
+
+    Feature5112 = '[ruby-core:38576]'
+
+    def test_public_send
+      name = self.class.noninterned_name
+      e = assert_raise(NoMethodError) {@obj.public_send(name, Feature5112)}
+      assert_not_send([Bug::Symbol, :interned?, name])
+      assert_equal(name, e.name)
+      assert_equal([Feature5112], e.args)
+    end
+
+    def test_send
+      name = self.class.noninterned_name
+      e = assert_raise(NoMethodError) {@obj.send(name, Feature5112)}
+      assert_not_send([Bug::Symbol, :interned?, name])
+      assert_equal(name, e.name)
+      assert_equal([Feature5112], e.args)
+    end
+
+    def test___send__
+      name = self.class.noninterned_name
+      e = assert_raise(NoMethodError) {@obj.__send__(name, Feature5112)}
+      assert_not_send([Bug::Symbol, :interned?, name])
+      assert_equal(name, e.name)
+      assert_equal([Feature5112], e.args)
+    end
+  end
+end