object.c: use converted string

* object.c (rb_convert_to_integer): should not drop the converted
  string.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56495 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/test/ruby/test_integer.rb b/test/ruby/test_integer.rb
index 6a9001c698..32c3511576 100644
--- a/test/ruby/test_integer.rb
+++ b/test/ruby/test_integer.rb
@@ -100,6 +100,10 @@ class TestInteger < Test::Unit::TestCase
     assert_raise(Encoding::CompatibilityError, bug6192) {Integer("0".encode("iso-2022-jp"))}
 
     assert_raise_with_message(ArgumentError, /\u{1f4a1}/) {Integer("\u{1f4a1}")}
+
+    obj = Struct.new(:s).new(%w[42 not-an-integer])
+    def obj.to_str; s.shift; end
+    assert_equal(42, Integer(obj, 10))
   end
 
   def test_int_p