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

["Thodoris Sotiropoulos (Jira)" <ji...@apache.org>]

Thodoris Sotiropoulos created GROOVY-10930:
----------------------------------------------

             Summary: 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


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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