From: Edgars Beigarts <edgars.beigarts@...>
Date: 2011-08-24T16:22:52+09:00
Subject: [ruby-core:39080] [Ruby 1.9 - Bug #5218] at_exit bug with exception handling


Issue #5218 has been updated by Edgars Beigarts.


To fix ruby 1.9 I came up with this workaround:

if defined?(RUBY_ENGINE) && RUBY_ENGINE == "ruby" && RUBY_VERSION >= "1.9"
  module Kernel
    alias :__at_exit :at_exit
    def at_exit(&block)
      __at_exit do
        exit_status = $!.status if $!.is_a?(SystemExit)
        block.call
        exit exit_status if exit_status
      end
    end
  end
end
----------------------------------------
Bug #5218: at_exit bug with exception handling
http://redmine.ruby-lang.org/issues/5218

Author: Edgars Beigarts
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin10.8.0]


It seems that ruby 1.9.2 and later doesn't like exception handling in `at_exit` blocks and resets the exit code to 0.

Here is an example:

    #!/usr/bin/ruby

    at_exit do
      raise "X" rescue nil
    end

    at_exit do
      nil
    end

    at_exit do
      exit 1
    end

    at_exit do
      exit 2
    end

Results:


    ### ruby 1.9.4dev (2011-08-23 trunk 33027) [x86_64-darwin10.8.0]

    $ ruby at_exit.rb ; echo $?
    0

    ### ruby 1.9.3dev (2011-07-31 revision 32789) [x86_64-darwin10.8.0]

    $ ruby at_exit.rb ; echo $?
    0

    ### ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin10.8.0]

    $ ruby at_exit.rb ; echo $?
    0

    ### ruby 1.8.7 (2011-06-30 patchlevel 352) [i686-darwin10.8.0]

    $ ruby at_exit.rb ; echo $?
    1

    ### jruby 1.6.3 (ruby-1.8.7-p330) (2011-07-07 965162f) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_26) [darwin-x86_64-java]

    $ jruby at_exit.rb ; echo $?
    1

    ### jruby 1.6.3 (ruby-1.9.2-p136) (2011-07-07 965162f) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_26) [darwin-x86_64-java]

    $ jruby --1.9 at_exit.rb ; echo $?
    1


Related issues:

https://github.com/jnicklas/capybara/pull/463
https://github.com/jnicklas/capybara/issues/178
https://github.com/rspec/rspec-core/pull/410



-- 
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