From: "chrismcg (Chris McGrath)" <chris@...>
Date: 2013-02-08T00:46:20+09:00
Subject: [ruby-core:51991] [ruby-trunk - Bug #7801][Open] Segfault with block called from continuation


Issue #7801 has been reported by chrismcg (Chris McGrath).

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Bug #7801: Segfault with block called from continuation
https://bugs.ruby-lang.org/issues/7801

Author: chrismcg (Chris McGrath)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 1.9.3p385 (2013-02-06 revision 39114) [x86_64-darwin11.4.2]


I'm getting a crash on OSX with 1.9.3-p385. I've also had the same crash on all the releases since at least -p194. I've seen some similar crash reports but nothing quite the same. Unfortunately this only happens intermittently when running my rails test suite and I haven't been able to make a simple reproduction.

The code where the crash occurs is in a model that uses the state_machine gem, specifically an around_transition which uses continuations internally. It's calling a block so given the intermittent nature of the crash perhaps the block is being GC'd at some point?

Our code looks like:

around_transition do |item, block|
  item.changing_state = true
  block.call
  item.changing_state = false
end


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