[jira] [Created] (GROOVY-10309) Improper type variable substitution when involving type parameters with conficting names

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

Thodoris Sotiropoulos created GROOVY-10309:
----------------------------------------------

             Summary: Improper type variable substitution when involving type parameters with conficting names
                 Key: GROOVY-10309
                 URL: https://issues.apache.org/jira/browse/GROOVY-10309
             Project: Groovy
          Issue Type: Bug
          Components: Static Type Checker
            Reporter: Thodoris Sotiropoulos


I have the following code

{code:java}
class A<T, Y> {
  T f1;
  Y f2;
  A(T f1, Y f2) {
    this.f1 = f1;
    this.f2 = f2;
  }


}


class B<T> {
  T x;
  B(T x) {
    this.x = x;
  }
}


class C<T, X> {
  void test() {
    A<X, T> x = new A<X, T>((X) null, (T) null);
  }
}
{code}

h3. Actual behaviour

{code}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
test.groovy: 23: [Static type checking] - Cannot call A#<init>(X, T) with arguments [X, T]
 @ line 23, column 17.
       A<X, T> x = new A<X, T>((X) null, (T) null);
                   ^

1 error
{code}

h3. Expected behaviour

Compile successfully

Tested against master



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