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https://issues.apache.org/jira/browse/GROOVY-11301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17812393#comment-17812393
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Jochen Theodorou commented on GROOVY-11301:
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Even though Test.A::m is a private method, A is an inner class of Test and
thus Test would have access to the method in Java. Also this does not fail in
groovy to any 3 or 4 version of Groovy. It also works for Groovy 5 alpha 1. If
it fails for master it must be something more recent
> References to inaccesible methods leads to runtime error
> --------------------------------------------------------
>
> Key: GROOVY-11301
> URL: https://issues.apache.org/jira/browse/GROOVY-11301
> Project: Groovy
> Issue Type: Bug
> Components: Static Type Checker
> Reporter: Thodoris Sotiropoulos
> Priority: Minor
>
> I have the following ill-typed program
> {code}
> import java.util.function.Supplier;
> public class Test {
> static class A {
> private static String m() { return null; }
> }
> public static void main(String[] args) {
> Supplier<String> x = A::m;
> }
> }
> {code}
> h3. Actual behaviour
> The compiler accepts the program, but I receive the following runtime error,
> because I access a private method.
> {code}
> Exception in thread "main" java.lang.IllegalAccessError: class Test tried to
> access private method 'java.lang.String Test$A.m()' (Test and Test$A are in
> unnamed module of loader 'app')
> at Test.main(groovy51.groovy:9)
> {code}
> h3. Expected behavior
> The program should have been rejected by the compiler.
> Tested against master (commit: 191231a832efd2e2fc49391c01f8d176944d68e3)
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