[jira] [Commented] (GROOVY-9853) ClassFormatError using method reference on interface target

["Eric Milles (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-9853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17540440#comment-17540440 ] 

Eric Milles commented on GROOVY-9853:
-------------------------------------

Isolated a bit further:
{code:groovy}
import java.util.function.Function
@groovy.transform.CompileStatic
def test() {
  Function<CharSequence, Integer> f = CharSequence::length
  f.apply("")
}
print test()
{code}

Java equivalent that runs successfully:
{code:java}
import java.util.function.Function;
public class Groovy9853 {
  public static void main(String[] args) throws Exception {
    Function<CharSequence, Integer> f = CharSequence::length;
    System.err.println(f.apply(""));
  }
}
{code}

> ClassFormatError using method reference on interface target
> -----------------------------------------------------------
>
>                 Key: GROOVY-9853
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9853
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 3.0.7, 4.0.2
>            Reporter: Christopher Smith
>            Priority: Major
>
> After upgrading to 3.0.7, using {{interfaceField::method}} is resulting in bytecode output containing an InterfaceMethodref that looks as expected. When running it in the Eclipse JUnit runner, however (which I think is unimportant), I'm getting a loading error from the JVM:
> {code}
> Caused by: java.lang.ClassFormatError: Invalid constant pool index 130 in class file com/example/sendgrid/SendgridMailSender (not a method)
> {code}
> where the offending constant is
> {code}
>   #130 = InterfaceMethodref #126.#129     // com/sendgrid/SendGridAPI.api:(Lcom/sendgrid/Request;)Lcom/sendgrid/Response;
> {code}
> from the 4.6.8 SendGrid SDK.
> Compiling with 3.0.6 seems to work. Replacing {{::}} with {{.&}} seems to work.
> The JVM is 11.0.9-hs-adpt.



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