String#unpack with X pattern is incorrect
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Key: JRUBY-1780
URL: http://jira.codehaus.org/browse/JRUBY-1780
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Environment: Latest JRuby 1.1b1 from trunk.
Reporter: Vladimir Sizikov
Attachments: string-unpack-X.patch
In the following example:
{noformat}
"abc".unpack("aaX*a")
{noformat}
MRI 1.8, 1.9, on Win/Linux return:
["a", "b", "b"]
JRuby returns:
["a", "b", "a"]
This also leads to one rubinius spec failure.
The proposed patch (with regression tests) fixes the problem and the test
failures.
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