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/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8046977 8065303
* @summary ClassCastException: typing information needed for method reference bridging not preserved
* @author Srikanth
* @run main MethodReferenceGenericTarget
*/
public class MethodReferenceGenericTarget {
static String result = "";
interface ISi { int m(Short a); }
public static void main(String[] args) {
(new MethodReferenceGenericTarget()).testUnboxObjectToNumberWiden();
if (!result.equals("7775"))
throw new AssertionError("Incorrect result");
MethodReferenceTestPrivateTypeConversion.main(null);
new InferenceHookTest().test();
}
void foo(ISi q) {
result += q.m((short)75);
}
public void testUnboxObjectToNumberWiden() {
ISi q = (new E<Short>())::xI;
result += q.m((short)77);
// Verify poly invocation context to confirm we handle
// deferred/speculative attribution paths adequately.
foo((new E<Short>())::xI);
}
class E<T> {
private T xI(T t) { return t; }
}
}
// snippet from https://bugs.openjdk.java.net/browse/JDK-8065303
class MethodReferenceTestPrivateTypeConversion {
class MethodReferenceTestTypeConversion_E<T> {
private T xI(T t) { return t; }
}
interface ISi { int m(Short a); }
interface ICc { char m(Character a); }
public void testUnboxObjectToNumberWiden() {
ISi q = (new MethodReferenceTestTypeConversion_E<Short>())::xI;
if ((q.m((short)77) != (short)77))
throw new AssertionError("Incorrect result");
}
public void testUnboxObjectToChar() {
ICc q = (new MethodReferenceTestTypeConversion_E<Character>())::xI;
if (q.m('@') != '@')
throw new AssertionError("Incorrect result");
}
public static void main(String[] args) {
new MethodReferenceTestPrivateTypeConversion().testUnboxObjectToNumberWiden();
new MethodReferenceTestPrivateTypeConversion().testUnboxObjectToChar();
}
}
class InferenceHookTestBase {
<X> X m(Integer i) { return null; }
}
class InferenceHookTest extends InferenceHookTestBase {
interface SAM1<R> {
R m(Integer i);
}
<Z> Z g(SAM1<Z> o) { return null; }
void test() {
String s = g(super::m);
if (s != null)
throw new AssertionError("Incorrect result");
}
}
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