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https://issues.apache.org/jira/browse/GROOVY-10235?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King closed GROOVY-10235.
------------------------------
> STC: Generic type of Set not correctly resolved when calling
> ConcurrentHashMap.newKeySet()
> ------------------------------------------------------------------------------------------
>
> Key: GROOVY-10235
> URL: https://issues.apache.org/jira/browse/GROOVY-10235
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Affects Versions: 4.0.0-beta-1
> Environment: OpenJDK 8
> Reporter: Lyuben Atanasov
> Assignee: Eric Milles
> Priority: Major
> Fix For: 4.0.0-beta-2
>
>
> The following code fails to compile when STC is enabled:
> {code}
> import java.util.concurrent.ConcurrentHashMap;
> class Test {
> public void test() {
> Set<Integer> integers = ConcurrentHashMap.newKeySet();
> integers.add(1);
> integers.add(2);
> printSet(integers);
> }
> private void printSet(Set<Integer> integers) {
> println "$integers";
> }
> }
> {code}
> The error reported by the compiler is:
> {noformat}
> Exception in thread "main"
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup
> failed:
> Script_a26d7b8defa71ea9b230673f8bc53d80.groovy: 9: [Static type checking] -
> Cannot call Test#printSet(java.util.Set<java.lang.Integer>) with arguments
> [java.util.concurrent.ConcurrentHashMap$KeySetView<java.lang.Object,
> java.lang.Object>]
> @ line 9, column 9.
> printSet(integers);
> ^
> {noformat}
> This issue is new to 4.0.0-beta-1, it has not been observed before that. It
> looks like the variable definition is treated as if it was {{def integers}}
> so the generic type of the Set is not correctly resolved.
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