diff --git a/bootstraptest/test_attr.rb b/bootstraptest/test_attr.rb
new file mode 100644
index 0000000000..c70e2c21a6
--- /dev/null
+++ b/bootstraptest/test_attr.rb
@@ -0,0 +1,10 @@
+assert_equal %{ok}, %{
+  class A
+    attr :m
+  end
+  begin
+    A.new.m(3)
+  rescue ArgumentError => e
+    print "ok"
+  end
+}, '[ruby-core:15120]'