2 files changed, 16 insertions, 3 deletions
diff --git a/test/ruby/envutil.rb b/test/ruby/envutil.rb
index 02215120dd..77ecd522f2 100644
--- a/test/ruby/envutil.rb
+++ b/test/ruby/envutil.rb
@@ -244,9 +244,9 @@ module Test
       end
 
       def assert_ruby_status(args, test_stdin="", message=nil, opt={})
-        _, _, status = EnvUtil.invoke_ruby(args, test_stdin, false, false, opt)
-        m = message ? "#{message} (#{status.inspect})" : "ruby exit status is not success: #{status.inspect}"
-        assert(status.success?, m)
+        out, _, status = EnvUtil.invoke_ruby(args, test_stdin, true, :merge_to_stdout, opt)
+        message ||= "ruby exit status is not success:"
+        assert(status.success?, FailDesc[status, message, out])
       end
 
       ABORT_SIGNALS = Signal.list.values_at(*%w"ILL ABRT BUS SEGV")
diff --git a/test/ruby/test_method.rb b/test/ruby/test_method.rb
index 23b348a94f..00f5658431 100644
--- a/test/ruby/test_method.rb
+++ b/test/ruby/test_method.rb
@@ -536,4 +536,17 @@ class TestMethod < Test::Unit::TestCase
       IRB.start
     }, '[Bug #7825]'
   end
+
+  def test_unlinked_method_entry_in_method_object_bug
+    bug8100 = '[ruby-core:53640] [Bug #8100]'
+    assert_ruby_status [], %q{
+      loop do
+        def x
+          "hello" * 1000
+        end
+        method(:x).call
+      end
+    }, bug8100, timeout: 2
+  rescue Timeout::Error
+  end
 end