Issue #11279 has been reported by Koichi Sasada.

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Bug #11279:  remove rb_control_frame_t::klass
https://bugs.ruby-lang.org/issues/11279

* Author: Koichi Sasada
* Status: Open
* Priority: Normal
* Assignee: Koichi Sasada
* ruby -v: 2.3dev
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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Please check https://bugs.ruby-lang.org/issues/11278
I sent it to ruby-dev because of my operation miss.

This is big change of method data structure.




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