Squashed commit of the following: [Backport #16516]

commit c98c492578d898dc07a04b8240d8d5b1508ffafa
Author: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date:   Fri Jan 17 16:56:53 2020 +0900

    Added test for f38b3e8c707ebdcad05aa9485cf1760640b74fbb

commit f38b3e8c707ebdcad05aa9485cf1760640b74fbb
Author: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date:   Thu Jan 16 18:34:31 2020 +0900

    Fixed the location of args node with numbered parameter

1 files changed, 8 insertions, 1 deletions

diff --git a/test/ruby/test_ast.rb b/test/ruby/test_ast.rb
index 4c156650b8..147d05eadf 100644
--- a/test/ruby/test_ast.rb
+++ b/test/ruby/test_ast.rb
@@ -42,10 +42,11 @@ class TestAst < Test::Unit::TestCase
   class Helper
     attr_reader :errors
 
-    def initialize(path)
+    def initialize(path, src: nil)
       @path = path
       @errors = []
       @debug = false
+      @ast = RubyVM::AbstractSyntaxTree.parse(src) if src
     end
 
     def validate_range
@@ -312,4 +313,10 @@ class TestAst < Test::Unit::TestCase
     assert_equal(false, kwrest.call('**nil'))
     assert_equal([:a], kwrest.call('**a'))
   end
+
+  def test_ranges_numbered_parameter
+    helper = Helper.new(__FILE__, src: "1.times {_1}")
+    helper.validate_range
+    assert_equal([], helper.errors)
+  end
 end