array.c: check position to insert

* array.c (rb_ary_insert): check position to insert even if no
  elements to be inserted.  [ruby-core:81125] [Bug #13558]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58693 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index d797ee8164..60938937cd 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -2121,6 +2121,7 @@ class TestArray < Test::Unit::TestCase
     assert_equal([0], a.insert(1))
     assert_equal([0, 1], a.insert(1, 1))
     assert_raise(ArgumentError) { a.insert }
+    assert_raise(TypeError) { a.insert(Object.new) }
     assert_equal([0, 1, 2], a.insert(-1, 2))
     assert_equal([0, 1, 3, 2], a.insert(-2, 3))
     assert_raise(RuntimeError) { [0].freeze.insert(0)}