Issue #11658 has been reported by Hiroshi SHIBATA.

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Bug #11658: Segmentation fault with activeadmin test suite
https://bugs.ruby-lang.org/issues/11658

* Author: Hiroshi SHIBATA
* Status: Open
* Priority: Normal
* Assignee: Eric Wong
* ruby -v: ruby 2.3.0dev (2015-11-04 trunk 52452) [x86_64-darwin15]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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I detect causes of SEGV with Ruby 2.3.0 HEAD and activeadmin-1.0.0.pre2 after r52332.

Please try following instructions with ruby of r52332.

```sh
$ gem install bundler
$ git clone --branch v1.0.0.pre2 https://github.com/activeadmin/activeadmin
$ cd activeadmin
$ bundle exec rspec spec/unit/active_admin_spec.rb
```

this segv is happened at launching rails server too. I attached crash log.

Please investigate this.



---Files--------------------------------
ruby_2015-11-05-115449_osx.crash (19.2 KB)


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