[jira] [Created] (GROOVY-10363) STC produces compile-time error on encoutering bounded type parameter with conditional

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

Thodoris Sotiropoulos created GROOVY-10363:
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             Summary: STC produces compile-time error on encoutering bounded type parameter with conditional
                 Key: GROOVY-10363
                 URL: https://issues.apache.org/jira/browse/GROOVY-10363
             Project: Groovy
          Issue Type: Bug
          Components: Static Type Checker
            Reporter: Thodoris Sotiropoulos


I have the following program:

{code:groovy}
import java.util.function.Supplier;

class A {
  static final <X extends Supplier<Number>> X m(X x, X y) {
    X z = (true) ? x : y
    z
  }
}
{code}

h3. Actual behavior

{code}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
test.groovy: 10: [Static type checking] - Incompatible generic argument types. Cannot assign java.util.function.Supplier<java.lang.Object> to: X
 @ line 10, column 5.
       z
       ^

1 error
{code}

h3. Compile successfully

NOTE: The bug is triggered only when the type parameter is named other than `T`.

Tested against master



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