62 lines
2.0 KiB
Java
62 lines
2.0 KiB
Java
/*
|
|
* Copyright (c) 2023, 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 8310126
|
|
* @summary Test that the Reference::get intrinsic works with a null argument.
|
|
* @run main/othervm -XX:TieredStopAtLevel=1 -XX:CompileCommand=compileonly,*TestReferenceGetWithNull::test -Xbatch
|
|
* compiler.intrinsics.TestReferenceGetWithNull
|
|
*/
|
|
|
|
package compiler.intrinsics;
|
|
|
|
import java.lang.ref.WeakReference;
|
|
|
|
public class TestReferenceGetWithNull {
|
|
|
|
// Declare final such that static binding at the call site is possible
|
|
static final class MyReference<T> extends WeakReference<T> {
|
|
public MyReference(T referent) {
|
|
super(referent);
|
|
}
|
|
}
|
|
|
|
static void test(MyReference r) {
|
|
try {
|
|
r.get();
|
|
} catch (Exception e) {
|
|
// Ignore
|
|
}
|
|
}
|
|
|
|
public static void main(String[] args) {
|
|
// Make sure MyReference is loaded
|
|
MyReference<String[]> obj = new MyReference<>(args);
|
|
// Trigger compilation
|
|
for (int i = 0; i < 50_000; ++i) {
|
|
test(null);
|
|
}
|
|
}
|
|
}
|