--- /dev/null 2017-08-03 13:42:08.516000218 -0400 +++ new/test/runtime/valhalla/valuetypes/verifier/VloadTest.java 2017-09-07 12:13:27.557837642 -0400 @@ -0,0 +1,73 @@ +/* + * Copyright (c) 2017, 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. + */ + +package runtime.valhalla.valuetypes.verifier; + +import java.lang.invoke.*; +import java.lang.ref.*; +import java.util.concurrent.*; +import jdk.experimental.value.*; +import sun.hotspot.WhiteBox; + +/** + * @test VloadTest + * @summary Test vload opcode + * @library /test/lib + * @compile -XDenableValueTypes VloadTest.java + * @run main ClassFileInstaller sun.hotspot.WhiteBox + * @run driver ClassFileInstaller sun.hotspot.WhiteBox + * sun.hotspot.WhiteBox$WhiteBoxPermission + * @run main/othervm -Xint -XX:+UseG1GC -Xmx128m -XX:+EnableMVT + * -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI + * runtime.valhalla.valuetypes.verifier.VloadTest + */ +public class VloadTest { + + public static void main(String[] args) throws Throwable{ + testBytecodes(); + } + + // Test that vload cannot load an integer. + public static void testBytecodes() throws Throwable { + try { + MethodHandles.Lookup lookup = MethodHandles.lookup(); + + Object array = MethodHandleBuilder.loadCode( + lookup, + "vloadAnInteger", + MethodType.methodType(Object.class, Integer.TYPE), + CODE->{ + CODE + .vload(0) // Attempt to vload an Integer + .aconst_null() + .areturn(); + }).invoke(1000); + } catch (Throwable t) { + if (!t.getMessage().contains("java.lang.VerifyError: Bad local variable type")) { + throw t; + } else { + System.out.println("Successful detection of vload verification error"); + } + } + } +}