[jira] [Updated] (GROOVY-9710) List.intersect changes behavior from Groovy 2.4 and Groovy 2.5+

["Sam Gleske (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-9710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sam Gleske updated GROOVY-9710:
-------------------------------
    Environment: 
Ubuntu 18.04.5 LTS
OpenJDK Java 1.8.0_265 (Private Build 25.265-b01)
Gradle 5.6.3

> List.intersect changes behavior from Groovy 2.4 and Groovy 2.5+
> ---------------------------------------------------------------
>
>                 Key: GROOVY-9710
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9710
>             Project: Groovy
>          Issue Type: Bug
>          Components: groovy-runtime
>    Affects Versions: 3.0.5, 2.5.13
>         Environment: Ubuntu 18.04.5 LTS
> OpenJDK Java 1.8.0_265 (Private Build 25.265-b01)
> Gradle 5.6.3
>            Reporter: Sam Gleske
>            Priority: Major
>
> h2. Description
> List.intersect preserves the ordering of the source list in Groovy 2.4 but instead takes the ordering of the intersecting list. This can lead to unexpected behavior in Groovy applications as code migrates to newer versions of Groovy.
> h2. Example code
> {code:java}
> // Passes assertion in Groovy 2.4.20 but fails in Groovy 2.5.13 and 3.0.5
> 0
> assert ['a', 'b'].intersect(['c', 'b', 'a']) == ['a', 'b']{code}
> h2. Expected behavior
> The order of the first list is preserved.
> h2. Actual behavior
> The order of the second list takes precedence.



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