Remove implicit conversion using `to_int` method.

The ISO standard does not include implicit type conversion using
`to_int`. This implicit conversion often causes vulnerability.
There will be no more attacks like #4120.

In addition, we have added internal convenience method `__to_int` which
does type check and conversion (from floats).

1 files changed, 0 insertions, 6 deletions

diff --git a/mrbgems/mruby-enumerator/test/enumerator.rb b/mrbgems/mruby-enumerator/test/enumerator.rb
index 428ea0307..c24b70ccb 100644
--- a/mrbgems/mruby-enumerator/test/enumerator.rb
+++ b/mrbgems/mruby-enumerator/test/enumerator.rb
@@ -55,12 +55,6 @@ assert 'Enumerator#with_index' do
   assert_equal [[[1, 10], 20], [[2, 11], 21], [[3, 12], 22]], a
 end
 
-assert 'Enumerator#with_index nonnum offset' do
-  s = Object.new
-  def s.to_int; 1 end
-  assert_equal([[1,1],[2,2],[3,3]], @obj.to_enum(:foo, 1, 2, 3).with_index(s).to_a)
-end
-
 assert 'Enumerator#with_index string offset' do
   assert_raise(TypeError){ @obj.to_enum(:foo, 1, 2, 3).with_index('1').to_a }
 end