Issue #9269 has been reported by rosenfeld (Rodrigo Rosenfeld Rosas).

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Bug #9269: class variable is not being handled correctly
https://bugs.ruby-lang.org/issues/9269

Author: rosenfeld (Rodrigo Rosenfeld Rosas)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 2.0.0p353 (2013-11-22 revision 43784) [x86_64-linux]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


I was doing an experiment after discussing with Charles Nutter whether the memoize pattern (@v ||= value_processing) was atomic in MRI and found what seems to be a curious bug in MRI implementation:

https://gist.github.com/rosenfeld/8056742

Shouldn't the output be 1, 101, 102, 102 instead of 1, 1, 102, 102?

Also, should I post the code and output here or is it ok to just link to it? Also, if I were to paste the code here, how am I supposed to format Ruby code in this Redmine?


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