iseq.c (iseq_data_to_ary): dump kw_arg as symbol

Fix RubyVM::InstructionSequence#to_a after r49517
Keywords were made symbols to fix [Bug #10831] [ruby-core:68031],
so we should dump symbols as-is instead of attempting to convert
them from IDs

* iseq.c (iseq_data_to_ary): dump kw_arg as symbol
* test/-ext-/iseq_load/test_iseq_load.rb: test kw_arg roundtrip
  [ruby-core:69891] [Bug #11338]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51190 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 9 insertions, 0 deletions

diff --git a/test/-ext-/iseq_load/test_iseq_load.rb b/test/-ext-/iseq_load/test_iseq_load.rb
index 7251603b0a..5dfd69a863 100644
--- a/test/-ext-/iseq_load/test_iseq_load.rb
+++ b/test/-ext-/iseq_load/test_iseq_load.rb
@@ -86,6 +86,15 @@ class TestIseqLoad < Test::Unit::TestCase
     assert_iseq_roundtrip(src)
   end
 
+  def test_kwarg
+    assert_iseq_roundtrip <<-'end;'
+      def foo(kwarg: :foo)
+        kwarg
+      end
+      foo(kwarg: :bar)
+    end;
+  end
+
   # FIXME: still failing
   def test_require_integration
     skip "iseq loader require integration tests still failing"