4 files changed, 3 insertions, 36 deletions
diff --git a/mrbgems/mruby-array-ext/mrblib/array.rb b/mrbgems/mruby-array-ext/mrblib/array.rb
index 54d62e3fd..bb95d70c5 100644
--- a/mrbgems/mruby-array-ext/mrblib/array.rb
+++ b/mrbgems/mruby-array-ext/mrblib/array.rb
@@ -773,16 +773,6 @@ class Array
   end
 
   ##
-  #  call-seq:
-  #     ary.to_ary -> ary
-  #
-  #  Returns +self+.
-  #
-  def to_ary
-    self
-  end
-
-  ##
   # call-seq:
   #   ary.dig(idx, ...)                 -> object
   #
diff --git a/mrbgems/mruby-array-ext/test/array.rb b/mrbgems/mruby-array-ext/test/array.rb
index b7467724c..853554bcc 100644
--- a/mrbgems/mruby-array-ext/test/array.rb
+++ b/mrbgems/mruby-array-ext/test/array.rb
@@ -331,27 +331,11 @@ assert('Array#to_h') do
   assert_raise(ArgumentError) { [[1]].to_h }
 end
 
-assert('Array#to_h (Modified)') do
-  class A
-    def to_ary
-      $a.clear
-      nil
-    end
-  end
-  $a = [A.new]
-  assert_raise(TypeError) { $a.to_h }
-end
-
 assert("Array#index (block)") do
   assert_nil (1..10).to_a.index { |i| i % 5 == 0 and i % 7 == 0 }
   assert_equal 34, (1..100).to_a.index { |i| i % 5 == 0 and i % 7 == 0 }
 end
 
-assert("Array#to_ary") do
-  assert_equal [], [].to_ary
-  assert_equal [1,2,3], [1,2,3].to_ary
-end
-
 assert("Array#dig") do
   h = [[[1]], 0]
   assert_equal(1, h.dig(0, 0, 0))
diff --git a/mrbgems/mruby-enumerator/mrblib/enumerator.rb b/mrbgems/mruby-enumerator/mrblib/enumerator.rb
index 6dd971f3a..9d80bc552 100644
--- a/mrbgems/mruby-enumerator/mrblib/enumerator.rb
+++ b/mrbgems/mruby-enumerator/mrblib/enumerator.rb
@@ -624,9 +624,7 @@ module Enumerable
   # use Enumerator to use infinite sequence
   def zip(*args, &block)
     args = args.map do |a|
-      if a.respond_to?(:to_ary)
-        a.to_ary.to_enum(:each)
-      elsif a.respond_to?(:each)
+      if a.respond_to?(:each)
         a.to_enum(:each)
       else
         raise TypeError, "wrong argument type #{a.class} (must respond to :each)"
diff --git a/mrbgems/mruby-kernel-ext/src/kernel.c b/mrbgems/mruby-kernel-ext/src/kernel.c
index bc2656399..324753f6e 100644
--- a/mrbgems/mruby-kernel-ext/src/kernel.c
+++ b/mrbgems/mruby-kernel-ext/src/kernel.c
@@ -161,9 +161,7 @@ mrb_f_string(mrb_state *mrb, mrb_value self)
  *  call-seq:
  *     Array(arg)    -> array
  *
- *  Returns +arg+ as an Array.
- *
- *  First tries to call Array#to_ary on +arg+, then Array#to_a.
+ *  Returns +arg+ as an Array using to_a method.
  *
  *     Array(1..5)   #=> [1, 2, 3, 4, 5]
  *
@@ -174,10 +172,7 @@ mrb_f_array(mrb_state *mrb, mrb_value self)
   mrb_value arg, tmp;
 
   mrb_get_args(mrb, "o", &arg);
-  tmp = mrb_check_convert_type(mrb, arg, MRB_TT_ARRAY, "Array", "to_ary");
-  if (mrb_nil_p(tmp)) {
-    tmp = mrb_check_convert_type(mrb, arg, MRB_TT_ARRAY, "Array", "to_a");
-  }
+  tmp = mrb_check_convert_type(mrb, arg, MRB_TT_ARRAY, "Array", "to_a");
   if (mrb_nil_p(tmp)) {
     return mrb_ary_new_from_values(mrb, 1, &arg);
   }