https://github.com/philipmw/rubinius-issue-3527

Minimal test case for https://github.com/rubinius/rubinius/issues/3527
https://github.com/philipmw/rubinius-issue-3527

Last synced: 3 days ago
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Minimal test case for https://github.com/rubinius/rubinius/issues/3527

• Host: GitHub
• URL: https://github.com/philipmw/rubinius-issue-3527
• Owner: philipmw
• Created: 2015-12-01T01:56:55.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2015-12-01T02:36:36.000Z (almost 9 years ago)
• Last Synced: 2023-02-27T18:11:28.194Z (over 1 year ago)
• Language: Ruby
• Homepage:
• Size: 1.95 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
This is a bug report against Rubinius 2.5.8.

# Symptom

A marshalled custom object fails to unmarshal on Rubinius 2.5.8, but it works on JRuby and MRI Ruby.

# Details

Included is a minimal test case.  A _Promise_ object wraps an _InnerClass_ object and delegates all unrecognized method calls to it.  _Promise_ inherits from _BasicObject_, so it's effectively a transparent wrapper around _InnerClass_.

When marshaling on Rubinius, the _Promise_ object is called with `#__class__`.  By default, this method is delegated to _InnerClass_ like all others.  As a result, the marshal string looks like `InnerClass > InnerClass`, which fails when unmarshaling.

In contrast, in Rubies, the _Promise_ object knows its class name, the `#__class__` method is never called, so it does not get delegated to the inner class.  The marshal string looks like `Promise > InnerClass` and correctly unmarshals.

````

% rbenv local 2.2.3

0c4de9cd2926% bundle exec ruby test.rb

Run options: --seed 56865

# Running:

.

Finished in 0.001321s, 756.7811 runs/s, 756.7811 assertions/s.

1 runs, 1 assertions, 0 failures, 0 errors, 0 skips

0c4de9cd2926% rbenv local jruby-1.7.19

0c4de9cd2926% bundle exec ruby test.rb

Run options: --seed 57593

# Running:

.

Finished in 0.013000s, 76.9231 runs/s, 76.9231 assertions/s.

1 runs, 1 assertions, 0 failures, 0 errors, 0 skips

0c4de9cd2926% rbenv local rbx-2.5.8

0c4de9cd2926% bundle exec ruby test.rb

Run options: --seed 55453

# Running:

E

Finished in 0.007167s, 139.5284 runs/s, 0.0000 assertions/s.

  1) Error:

TestPromise#test_marshal:

NoMethodError: undefined method `_load' on InnerClass (Class)

    kernel/delta/kernel.rb:78:in `_load (method_missing)'

    kernel/common/marshal.rb:833:in `construct_user_defined'

    kernel/common/marshal.rb:521:in `construct'

    kernel/common/marshal.rb:159:in `set_instance_variables'

    kernel/common/integer.rb:196:in `times'

    kernel/common/marshal.rb:157:in `set_instance_variables'

    kernel/common/marshal.rb:766:in `construct_object'

    kernel/common/marshal.rb:519:in `construct'

    kernel/common/marshal.rb:1214:in `load'

    test.rb:36:in `test_marshal'

1 runs, 0 assertions, 0 failures, 1 errors, 0 skips

0c4de9cd2926% RUBINIUS_FIX=true bundle exec ruby test.rb

Run options: --seed 56613

# Running:

*** Promise#__class__ invoked!

.

Finished in 0.005071s, 197.1998 runs/s, 197.1998 assertions/s.

1 runs, 1 assertions, 0 failures, 0 errors, 0 skips

````