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https://issues.apache.org/jira/browse/GROOVY-9424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17045402#comment-17045402
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Paul King commented on GROOVY-9424:
-----------------------------------
This looks like a bug in the final variable analyzer.
> Handling of final variables
> ---------------------------
>
> Key: GROOVY-9424
> URL: https://issues.apache.org/jira/browse/GROOVY-9424
> Project: Groovy
> Issue Type: Bug
> Reporter: Daniel Wilmer
> Priority: Major
>
> The following code runs on groovy 2.4.18 but not on groovy 3.0.1.
> {code}
> static void main(String[] args) {
> final String result
> switch (2) {
> case 1: result = "a"; break;
> case 2: result = "b"; break;
> default: result = "x"
> }
> println result
> }
> {code}
> *Error: Groovyc: The variable [result] is declared final but is reassigned.*
> Since we use final in our codebase a lot (although it seems to be ignored by
> groovy 2.4),
> we will have to adjust a lot of places to make our code groovy 3.0 compatible.
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