[GROOVY-10310] STC is unable to call parameterized function

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-beta-2, 3.0.20
• Component/s: Static Type Checker
• Assignee: Eric Milles
• Reporter: Thodoris Sotiropoulos
• Created: 15/Oct/21 12:50
• Updated: 24/Oct/23 15:30
• Resolved: 02/Nov/21 17:16

Description

I have the following program

class A<T> {
  T f;
  A(T f) {
    this.f = f;
  }

  A() {}
}

class B<T> {}

class Test {
  static <T> A<T> test(T x, B<? extends T> z) {
    return new A<>(x);
  }

  public static void main(String[] args) {
    var d = "d";
    test(d, new B<>());
  }

}

Actual behaviour

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
test.groovy: 20: [Static type checking] - Cannot call <T> Test#test(T, B<? extends java.lang.Object>) with arguments [java.lang.String, B<java.lang.Object extends T>]
 @ line 20, column 5.
       test(d, new B<>());
       ^

1 error

Expected behaviour

Compile successfully

Tested against master