compile.c: order with splatting

* compile.c (setup_args): duplicate splatting array if more
  arguments present to obey left-to-right execution order.
  [ruby-core:77701] [Bug# 12860]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56469 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 0 deletions

diff --git a/test/ruby/test_call.rb b/test/ruby/test_call.rb
index fb79eadb64..4496d78210 100644
--- a/test/ruby/test_call.rb
+++ b/test/ruby/test_call.rb
@@ -90,4 +90,12 @@ class TestCall < Test::Unit::TestCase
       h[:foo] = nil
     }
   end
+
+  def test_call_splat_order
+    bug12860 = '[ruby-core:77701] [Bug# 12860]'
+    ary = [1, 2]
+    assert_equal([1, 2, 1], aaa(*ary, ary.shift), bug12860)
+    ary = [1, 2]
+    assert_equal([0, 1, 2, 1], aaa(0, *ary, ary.shift), bug12860)
+  end
 end