[jira] [Updated] (GROOVY-10629) Subtyping does not work properly when having two bounded type parameters

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

     [ https://issues.apache.org/jira/browse/GROOVY-10629?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thodoris Sotiropoulos updated GROOVY-10629:
-------------------------------------------
    Description: 
This is related to https://issues.apache.org/jira/browse/GROOVY-10115

I have the following program

{code}
class A<T> {
  void m(T x) {}
}


class B<X extends Number, Y extends X> {
  void test() {
    A<X> x = new A<X>();
    x.m((Y) null);
  }
}
{code}

h3. Actual behavior

{code}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
test.groovy: 9: [Static type checking] - Cannot call A#m(X) with arguments [Y]
 @ line 9, column 5.
       x.m((Y) null);
       ^

1 error
{code}

h3. Expected behavior

Compile successfully

Note: This bug occurs only when the type variable X is also bounded.

Tested against master (commit: a976ecdee1f17f7fafc55767de2d857c44d44697)

  was:
I have the following program

{code}
class A<T> {
  void m(T x) {}
}


class B<X extends Number, Y extends X> {
  void test() {
    A<X> x = new A<X>();
    x.m((Y) null);
  }
}
{code}

h3. Actual behavior

{code}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
test.groovy: 9: [Static type checking] - Cannot call A#m(X) with arguments [Y]
 @ line 9, column 5.
       x.m((Y) null);
       ^

1 error
{code}

h3. Expected behavior

Compile successfully

Note: This bug occurs only when the type variable X is also bounded.

Tested against master (commit: a976ecdee1f17f7fafc55767de2d857c44d44697)


> Subtyping does not work properly when having two bounded type parameters
> ------------------------------------------------------------------------
>
>                 Key: GROOVY-10629
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10629
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static Type Checker
>            Reporter: Thodoris Sotiropoulos
>            Priority: Major
>
> This is related to https://issues.apache.org/jira/browse/GROOVY-10115
> I have the following program
> {code}
> class A<T> {
>   void m(T x) {}
> }
> class B<X extends Number, Y extends X> {
>   void test() {
>     A<X> x = new A<X>();
>     x.m((Y) null);
>   }
> }
> {code}
> h3. Actual behavior
> {code}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> test.groovy: 9: [Static type checking] - Cannot call A#m(X) with arguments [Y]
>  @ line 9, column 5.
>        x.m((Y) null);
>        ^
> 1 error
> {code}
> h3. Expected behavior
> Compile successfully
> Note: This bug occurs only when the type variable X is also bounded.
> Tested against master (commit: a976ecdee1f17f7fafc55767de2d857c44d44697)



--
This message was sent by Atlassian Jira
(v8.20.7#820007)