[jira] [Created] (COLLECTIONS-657) "union" method is resulting in data loss

[Igor Savin (JIRA)]

Igor Savin created COLLECTIONS-657:
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             Summary: "union" method is resulting in data loss
                 Key: COLLECTIONS-657
                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-657
             Project: Commons Collections
          Issue Type: Bug
    Affects Versions: 4.1
            Reporter: Igor Savin
            Priority: Critical


Create 2 instances of StringReader from strings (1 and 2), put them into a list 
A.
Create empty list B.
Call CollectionUtils.union(A, B);

Expected result: [1, 2]
Actual result: [1, 1].



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