[jira] [Resolved] (GROOVY-10930) STC accepts program although constructor reference is invalid

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

     [ https://issues.apache.org/jira/browse/GROOVY-10930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles resolved GROOVY-10930.
----------------------------------
    Fix Version/s: 5.0.0-alpha-1
       Resolution: Fixed

https://github.com/apache/groovy/commit/eb61b270f4d6bdb1fb51f10b01cc7e6afbaf9d18

> STC accepts program although constructor reference is invalid
> -------------------------------------------------------------
>
>                 Key: GROOVY-10930
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10930
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static Type Checker
>            Reporter: Thodoris Sotiropoulos
>            Assignee: Eric Milles
>            Priority: Major
>             Fix For: 5.0.0-alpha-1
>
>
> I have the following program
> {code}
> import java.util.function.*;
> class Bar {}
> public class Test {
>     public static void main(String[] args) {
>       m(Bar::new);
>     }
>     static <X> void m(Function<String, X> d) {
>       d.apply("dfa")
>     }
> }
> {code}
> h3. Actual behavior
> The compiler accepts the program, but notice that the constructor reference is invalid. So, at runtime, we get:
> {code}
> Exception in thread "main" groovy.lang.GroovyRuntimeException: Could not find matching constructor for: Bar(String)
>         at groovy.lang.MetaClassImpl.invokeConstructor(MetaClassImpl.java:1908)
>         at groovy.lang.MetaClassImpl.invokeConstructor(MetaClassImpl.java:1677)
>         at org.codehaus.groovy.vmplugin.v8.IndyInterface.fromCache(IndyInterface.java:321)
>         at Test.ctorRef$main$0(test.groovy)
>         at Test.m(test.groovy:13)
>         at Test.main(test.groovy:9)
> {code}
> h3. Expected behavior
> The compiler should have rejected this example program.
> Tested against master (commit: 2c40df2827b8d1bc941bd6ebdc386b3f9bc3bf3b)



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