From: qqshfox@...
Date: 2014-12-04T10:28:12+00:00
Subject: [ruby-core:66685] [ruby-trunk - Bug #10567] [Open] A fiber issue with `autoload`: `fiber called across stack rewinding barrier (FiberError)`

Issue #10567 has been reported by Hanfei Shen.

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Bug #10567: A fiber issue with `autoload`: `fiber called across stack rewinding barrier (FiberError)`
https://bugs.ruby-lang.org/issues/10567

* Author: Hanfei Shen
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: ruby-2.1.5
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
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We have two ruby files as following:

test.rb

    autoload :User, './user.rb'

    f = Fiber.new do
      p User
    end
    f.resume
    f.resume

user.rb

    class User
    end

    Fiber.yield # This line is important

If I run the `test.rb`, i got the a `FiberError` on Ruby 2.x but not on Ruby 1.9.3

    $ rvm 1.9.3,2.0,2.1 do sh -c 'echo ==== $RUBY_VERSION; ruby test.rb'
    ==== ruby-1.9.3-p551
    User
    ==== ruby-2.0.0-p598
    user.rb:4:in `yield': fiber called across stack rewinding barrier (FiberError)
        from user.rb:4:in `<top (required)>'
        from test.rb:4:in `block in <main>'
    ==== ruby-2.1.5
    user.rb:4:in `yield': fiber called across stack rewinding barrier (FiberError)
        from user.rb:4:in `<top (required)>'
        from test.rb:4:in `block in <main>'

More sample codes are in this repo:

https://github.com/qqshfox/test_fiber

Is this intentional?



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