--- /dev/null 2019-03-11 09:22:42.048915961 +0100 +++ new/test/hotspot/jtreg/runtime/valhalla/valuetypes/WithFieldAccessorTest.java 2019-03-11 14:27:57.050353622 +0100 @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2018, 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 8210351 + * @summary test nestmate access to a value type's public, protected and private final fields. + * @compile -XDemitQtypes -XDallowWithFieldOperator WithFieldAccessorTest.java + * @run main/othervm -XX:+EnableValhalla WithFieldAccessorTest + */ + +// This test is similar to javac's WithFieldAccessorTest but tests nestmate +// access to public, protected, and private final fields in a value type. +public class WithFieldAccessorTest { + + public static final value class V { + public final char c; + protected final long l; + private final int i; + V() { + this.c = '0'; + this.l = 0; + this.i = 0; + } + + public static V make(char c, long l, int i) { + V v = V.default; + v = __WithField(v.c, c); + v = __WithField(v.l, l); + v = __WithField(v.i, i); + return v; + } + } + + public static void main(String... args) throws Throwable { + V v = __WithField(V.make('a', 5, 10).c, 'b'); + if (!v.toString().equals("[WithFieldAccessorTest$V c=b l=5 i=10]")) { + throw new AssertionError("Withfield of 'c' didn't work!" + v.toString()); + } + v = __WithField(V.make('a', 5, 10).l, 25); + if (!v.toString().equals("[WithFieldAccessorTest$V c=a l=25 i=10]")) { + throw new AssertionError("Withfield of 'l' didn't work!" + v.toString()); + } + v = __WithField(V.make('a', 5, 10).i, 20); + if (!v.toString().equals("[WithFieldAccessorTest$V c=a l=5 i=20]")) { + throw new AssertionError("Withfield of 'i' didn't work!" + v.toString()); + } + } +}