[jira] [Created] (GROOVY-10368) STC fails to instantiate type variable when using diamond operator

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

Thodoris Sotiropoulos created GROOVY-10368:
----------------------------------------------

             Summary: STC fails to instantiate type variable when using diamond operator
                 Key: GROOVY-10368
                 URL: https://issues.apache.org/jira/browse/GROOVY-10368
             Project: Groovy
          Issue Type: Bug
          Components: Static Type Checker
            Reporter: Thodoris Sotiropoulos


I have the following program

{code:java}
class A<T extends Number> {
  A(String x) {}
}


class B {
  void m(A<Integer> x) {}
}


class Test {
  void test() {
    B x = new B();
    x.m(new A<>(""));
  }
}
{code}

h3. Actual behaviour

{code}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
test.groovy: 14: [Static type checking] - Cannot call B#m(A<java.lang.Integer>) with arguments [A<# extends java.lang.Number>]
 @ line 14, column 5.
       x.m(new A<>(""));
       ^

1 error
{code}

h3. Expected behaviour

Compile successfully

Tested against master (https://github.com/apache/groovy/commit/cf2f77fb033a10d36c4db3a7ff07a2b04631afcf)



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