Issue #7123 has been updated by authorNari (Narihiro Nakamura).

File backport_r37088_r37083_r37082_r37076_r37075_to_193.patch added

usa (Usaku NAKAMURA) wrote:
> If the patch does not changes the behavior of ruby, it's OK.
> "Not changes the behavior" means that there is no ABI changes, and it passes test, test-all and rubyspec.

I see. I've created the backport patch for r37088,r37083,r37082,r37076,r37075.
Could you check it?

Thank you!
----------------------------------------
Backport #7123: Segmentation fault in ruby 1.9.3-p194
https://bugs.ruby-lang.org/issues/7123#change-32846

Author: mscottford (M. Scott Ford)
Status: Assigned
Priority: Normal
Assignee: authorNari (Narihiro Nakamura)
Category: 
Target version: 


Example source for this issue is posted at https://github.com/mscottford/segfault-test, with reproduction instructions.

I'm encountering a segmentation fault in ruby 1.9.3-p194 on a project using Rails 3.2.8. The issue is only happening on Mac OS X. Members of my team that are running Linux do not have the same issue. The issue does not occur consistently; it sometimes takes several (20+) runs for the crash to happen.

test:
```
require 'spec_helper'

describe Widget do
  it "removes widget on rejection" do
    widget = Widget.create!

    expect do
      widget.reject!
    end.to change { described_class.count }.by(-1)

    GC.start
  end
end
```

model:
```
class Widget < ActiveRecord::Base
  attr_accessor :check_rejection_reason

  state_machine :initial => :requested do
    # I suspect that the issue is related to the issue being accessed in this closure after it has been deleted
    around_transition :requested => :none do |gm, transition, blk|
      gm.check_rejection_reason = true
      blk.call
      gm.check_rejection_reason = false
    end

    # This closure deletes the instance, but it is still being accessed by the `around_transition` above.
    after_transition any => :none do |gm, transition|
      gm.destroy
    end

    on :reject do
      transition :requested => :none
    end
  end
end
```



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