Squashed commit of the following: [Backport #16516]

commit c98c492578
Author: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date:   Fri Jan 17 16:56:53 2020 +0900

    Added test for f38b3e8c70

commit f38b3e8c70
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

parse.y

@@ -11377,7 +11377,11 @@ static NODE *
 args_with_numbered(struct parser_params *p, NODE *args, int max_numparam)
 {
     if (max_numparam > NO_PARAM) {
-	if (!args) args = new_args_tail(p, 0, 0, 0, 0);
+	if (!args) {
+	    YYLTYPE loc = RUBY_INIT_YYLLOC();
+	    args = new_args_tail(p, 0, 0, 0, 0);
+	    nd_set_loc(args, &loc);
+	}
 	args->nd_ainfo->pre_args_num = max_numparam;
     }
     return args;

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

test/ruby/test_syntax.rb

@@ -1451,6 +1451,8 @@ eom
       assert_valid_syntax("->{#{c};->{_1};end;_1}\n")
       assert_valid_syntax("->{_1;#{c};->{_1};end}\n")
     end
+
+    1.times {_1}
   end
 
   def test_value_expr_in_condition