Thodoris Sotiropoulos created GROOVY-10351:
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Summary: Wrong type argument is inferred on combining use-site
variance and diamond operator
Key: GROOVY-10351
URL: https://issues.apache.org/jira/browse/GROOVY-10351
Project: Groovy
Issue Type: Bug
Components: Static Type Checker
Reporter: Thodoris Sotiropoulos
This bug may be related to GROOVY-10337.
I have the following program
{code:java}
class A<T> {
A(T f, B<T, ? extends T> x){ }
}
class B<T1, T2> {}
class Test {
void test() {
B<Integer, ? extends Integer> x = null;
A<Integer> y = new A<>(1, x);
}
}
{code}
h3. Actual behaviour
{code}
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
test.groovy: 10: [Static type checking] - Incompatible generic argument types.
Cannot assign A<? extends java.lang.Object> to: A<java.lang.Integer>
@ line 10, column 20.
A<Integer> y = new A<>(1, x);
^
1 error
{code}
h3. Expected behaviour
Compile successfully
Tested against master
(https://github.com/apache/groovy/commit/de17150ee844a943c070c01c07b81fd547ff074d).
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