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https://issues.apache.org/jira/browse/GROOVY-10347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King closed GROOVY-10347.
------------------------------
> STC: lowed bound wildcard inference produces false positives
> ------------------------------------------------------------
>
> Key: GROOVY-10347
> URL: https://issues.apache.org/jira/browse/GROOVY-10347
> Project: Groovy
> Issue Type: Bug
> Reporter: Eric Milles
> Assignee: Eric Milles
> Priority: Major
> Fix For: 4.0.0-rc-1
>
>
> Follow up from GROOVY-10339 and possibly related to GROOVY-10047, GROOVY-9998
> and GROOVY-9803. Consider the following:
> {code:groovy}
> class Pogo {
> String x
> }
> class Sorter implements Comparator<Pogo>, Serializable {
> int compare(Pogo p1, Pogo p2) { p1.x <=> p2.x }
> }
> @groovy.transform.TypeChecked
> void test(Pogo[] pogos) {
> List<String> strings = pogos.sort(true, new Sorter()).collect { Pogo pogo ->
> pogo.x
> }
> print strings
> }
> test(new Pogo(x:'foo'),new Pogo(x:'bar'))
> {code}
> Current STC has difficulty with multiple type witnesses for the "sort" call,
> which supplies {{Pogo[]}} for {{T[]}} and {{Sorter}} for {{Comparator<? super
> T>}}.
> STC errors:
> {code}
> Incompatible generic argument types. Cannot assign
> java.util.List<java.lang.Object> to: java.util.List<java.lang.String>
> Expected parameter of type java.lang.Object but got Pogo
> No such property: x for class: java.lang.Object
> {code}
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