FULL PRODUCT VERSION :
java version "1.9.0-ea"
Java(TM) SE Runtime Environment (build 1.9.0-ea-b90)
Java HotSpot(TM) Client VM (build 1.9.0-ea-b90, mixed mode)

FULL OS VERSION :
Windows 10, 64bit
RHEL 7.1, 64bit

A DESCRIPTION OF THE PROBLEM :
Compiler fails to infer generic type when using combination of wildcard and inherited generic types.



REGRESSION. Last worked in version 8u66

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Try to compile the attached sources and compile will fail.
Or grab reproducer from https://github.com/ctomc/jdk9-compiler
and run mvn clean install.
it fails on jdk9u90
but works just fine on jdk8

EXPECTED VERSUS ACTUAL BEHAVIOR :
Compile should work as it does on JDK8.
But fails with:

/C:/development/java/jdk9-compiler/src/main/java/InfinispanSessionManagerFactory.java:[27,44] incompatible types: cannot infer type arguments for InfinispanSessionFactory<>
    reason: inference variable V has incompatible equality constraints capture#1 of ?,capture#2 of ?
REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

public class InfinispanSessionFactory<V, L> implements SessionFactory<List<L>, V, L> {

    public InfinispanSessionFactory(SessionAttributesFactory<V> attributesFactory) {

    }
}

public interface SessionAttributesFactory<V> {

}

public interface SessionAttributesFactory<V> {

}

public interface SessionFactory<MV, AV, L> {

}

public class InfinispanSessionManagerFactory {

    private <L> SessionFactory<?, ?, L> createSessionFactory() {
        return new InfinispanSessionFactory<>(this.createSessionAttributesFactory());
    }

    private <L> SessionAttributesFactory<?> createSessionAttributesFactory() {
        return null;
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Problem can be workaround by explicitly casting result of createSessionAttributesFactory()

so that method call looks like:
return new InfinispanSessionFactory<>((SessionAttributesFactory<Object>) this.createSessionAttributesFactory());