Issue #11254 has been reported by Nobuyoshi Nakada.

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Bug #11254: [BUG] no corresponding cfp
https://bugs.ruby-lang.org/issues/11254

* Author: Nobuyoshi Nakada
* Status: Assigned
* Priority: Normal
* Assignee: Nobuyoshi Nakada
* ruby -v: 
* Backport: 2.0.0: DONTNEED, 2.1: DONTNEED, 2.2: REQUIRED
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2.1以降、以下のコードが[BUG] rb_vm_search_cf_from_ep: no corresponding cfpになります。

~~~ruby
empty = Object.new
class << empty
  attr_reader :block
  def each(&block)
    @block = block
    self
  end
end
empty.first
empty.block.call
~~~



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