[ruby-core:68093] [Ruby trunk - Bug #10847] [Open] SystemStackError after NameError prepends a module

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Feb 12, 2015, 8:50:43 AM2/12/15
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Issue #10847 has been reported by Yuki Nishijima.

----------------------------------------
Bug #10847: SystemStackError after NameError prepends a module
https://bugs.ruby-lang.org/issues/10847

* Author: Yuki Nishijima
* Status: Open
* Priority: Normal
* Assignee:
* ruby -v: ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
The following code causes `SystemStackError`.

```ruby
module Foo
end

NameError.prepend Foo
foo rescue $!
```

And here is the full backtrace:

```
system_stack_error_from_name_error.rb:3:in `initialize': stack level too deep (SystemStackError)
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `initialize'
... 10907 levels...
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `initialize'
from system_stack_error_from_name_error.rb:3:in `method_missing'
from system_stack_error_from_name_error.rb:3:in `<main>'
```

This happens on Ruby 2.0.0, 2,1,5, 2.2.0 and ruby-trunk(rev 49451).



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