diff a/test/hotspot/jtreg/serviceability/jvmti/valhalla/SampledObjectAllocValue/SampledObjectAllocValue.java b/test/hotspot/jtreg/serviceability/jvmti/valhalla/SampledObjectAllocValue/SampledObjectAllocValue.java --- /dev/null +++ b/test/hotspot/jtreg/serviceability/jvmti/valhalla/SampledObjectAllocValue/SampledObjectAllocValue.java @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2026, 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 8381063 + * @summary Verify that null is passed for jobject parameter to JVMTI SampledObjectAlloc event callbacks. + * @requires vm.jvmti + * + * @enablePreview + * @run main/othervm/native -agentlib:SampledObjectAllocValue SampledObjectAllocValue + */ + +public class SampledObjectAllocValue { + + private static value class ValueClass { + public long x; + public long y; + + public ValueClass(long arg1, long arg2) { + x = arg1; y = arg2; + } + } + + private static ValueClass[] tmp = new ValueClass[100]; + + private static native void enableEvents(Thread thread, Class testedClass); + + public static void main(String[] args) throws Exception { + enableEvents(Thread.currentThread(), ValueClass.class); + // Allocate value objects to trigger JVMTI SampledObjectAlloc events. + // Here we assume that flat array layout is not used for ValueClass objects. + for (int i = 0; i < tmp.length; i++) { + tmp[i] = new ValueClass(i, i + 100); + } + } +}