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https://issues.apache.org/jira/browse/GROOVY-11060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17724547#comment-17724547
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Eric Milles commented on GROOVY-11060:
--------------------------------------

The root issue is missing support for spread in arrays. `['x' + *Y] as 
String[]` is transformed to `new String[]\{'x' + *Y}` in 
{{{}CastExpressionOptimizer{}}}. If you break it up as `List<String> list = 
['x' + *Y]; antMatchers(list as String[])` it works.

> SC internal error when spreading inside list literal
> ----------------------------------------------------
>
>                 Key: GROOVY-11060
>                 URL: https://issues.apache.org/jira/browse/GROOVY-11060
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static compilation
>    Affects Versions: 4.0.12
>            Reporter: Christopher Smith
>            Assignee: Eric Milles
>            Priority: Major
>
> Spreading a list inside brackets causes a {{SpreadExpression should not be 
> visited here}} during class generation. (The business instance of this is 
> trying to use a list of URL patterns for Spring {{antMatchers}}.)
> {code}
> @CompileStatic
> class Bug {
>     public static final List<String> A = ['a1', 'a2']
>     static void varargs(String... strings) {
>         println Arrays.toString(strings)
>     }
>     public static void main(String... args) {
>         varargs([
>             *A
>         ] as String[])
>     }
> }
> {code}



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