[GROOVY-6742] Groovy is unable to resolve this Generics use case

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.2
• Fix Version/s: 2.6.0-alpha-4, 3.0.0-alpha-3, 2.5.0-rc-3
• Component/s: Static Type Checker
• Environment: Groovy 2.2; Maven 3 with eclipse compiler
• Assignee: Daniel Sun
• Reporter: Nicolas Labrot
• Created: 30/Apr/14 08:00
• Updated: 26/Jul/18 04:38
• Resolved: 11/May/18 09:56

Description

Groovy fails with the following error when compiling the hereafter function:
Groovy:unable to resolve class F

    public static <F, T> FutureCallback<F> deferredCallback(DeferredResult<T> deferredResult, final Function<F, T> function) {
        return new FutureCallback<F>() {
            @Override
            void onSuccess(F result) {
                deferredResult.setResult(function.apply(result))
            }
        };
    }

See attachment for a test case org.issues.Issue3

May be linked to GROOVY-6167