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https://issues.apache.org/jira/browse/GROOVY-11307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Milles updated GROOVY-11307:
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Labels: annotations (was: )
> Compiler error for misapplication of @FunctionalInterface
> ---------------------------------------------------------
>
> Key: GROOVY-11307
> URL: https://issues.apache.org/jira/browse/GROOVY-11307
> Project: Groovy
> Issue Type: Improvement
> Components: Compiler
> Reporter: Eric Milles
> Priority: Major
> Labels: annotations
>
> {{groovyc}} does not emit errors for misuse of {{@FunctionalInterface}}. At
> minimum an interface with 0 or 2+ abstract methods should be an error. Bonus
> points for supporting traits as well -- a trait compiles to an interface.
> And using the annotation on a class, enum or @interface is improper as well.
> {code:groovy}
> @FunctionalInterface
> interface I {
> }
> {code}
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