[GROOVY-10116] STC: error when passing a type parameter in type constructor

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.8, 4.0.0-alpha-3
• Fix Version/s: 4.0.2, 2.5.19, 3.0.13
• Component/s: Static compilation, Static Type Checker
• Assignee: Eric Milles
• Reporter: Stefanos Chaliasos
• Created: 27/May/21 13:45
• Updated: 12/Sep/22 14:37
• Resolved: 15/Mar/22 19:33

Description

I have the following Groovy program.

@groovy.transform.TypeChecked
class Test<T> {
  public void foo() {
    Foo<T, Long> x = new Foo<T, Long>(new Bar<T, Long>());
  }
}

class Foo<X, T> {
  public Foo(Bar<X, T> y) {}
}

class Bar<X, T> {}

Actual Behavior

The program does not compile, and I get the following error.

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Test.groovy: 4: [Static type checking] - Cannot call Foo#<init>(Bar<T, java.lang.Long>) with arguments [Bar<T, java.lang.Long>]
 @ line 4, column 22.
       Foo<T, Long> x = new Foo<T, Long>(new Bar<T, Long>());
                        ^

1 error

Expected Behavior

Compile successfully.

Affected Version

This programs have been tested with the compiler from the master (commit: c36c8bf3d24ce41e972e3f3e7a5763acf96f46b1), 4.0.0-alpha-3, and 3.0.8.