compile.c: no keyword check if kw_rest

* compile.c (iseq_set_arguments): no keyword check if any keyword rest
  argument exists, even unnamed.  [ruby-core:52744] [Bug #7922]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39444 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,13 @@
+Sun Feb 24 07:51:28 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* compile.c (iseq_set_arguments): no keyword check if any keyword rest
+	  argument exists, even unnamed.  [ruby-core:52744] [Bug #7922]
+
+Sun Feb 24 07:50:53 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* compile.c (iseq_set_arguments): no keyword check if any keyword rest
+	  argument exists, even unnamed.  [ruby-core:52744] [Bug #7922]
+
 Sat Feb 23 16:51:00 2013  Zachary Scott  <zachary@zacharyscott.net>
 
 	* thread.c: Documentation for Thread#backtrace_locations

compile.c

@@ -1204,7 +1204,6 @@ iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *optargs, NODE *node_args)
 	else if (args->kw_rest_arg) {
 	    iseq->arg_keyword = get_dyna_var_idx_at_raw(iseq, args->kw_rest_arg->nd_vid);
 	    COMPILE(optargs, "kwarg", args->kw_rest_arg);
-	    iseq->arg_keyword_check = (args->kw_rest_arg->nd_vid & ID_SCOPE_MASK) == ID_JUNK;
 	    ADD_INSN(optargs, nd_line(args->kw_rest_arg), pop);
 	}
 	else {

test/ruby/test_syntax.rb

@@ -77,6 +77,9 @@ class TestSyntax < Test::Unit::TestCase
       eval("def o.m(k: 0) k end")
     end
     assert_equal(42, o.m(k: 42), '[ruby-core:45744]')
+    bug7922 = '[ruby-core:52744] [Bug #7922]'
+    def o.bug7922(**) end
+    assert_nothing_raised(ArgumentError, bug7922) {o.bug7922(foo: 42)}
   end
 
   def test_keyword_splat