74 lines
2.2 KiB
Java
74 lines
2.2 KiB
Java
/*
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8058199
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* @summary Code generation problem with javac skipping a checkcast instruction
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*/
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public class T8058199 {
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final static String SYNTHETIC_CAST_TYPE = "[Ljava.lang.String;";
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@SuppressWarnings("unchecked")
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<Z> Z[] makeArr(Z z) { return (Z[])new Object[1]; }
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<U> void check(U u) { }
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void testMethod() {
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test(() -> check(makeArr("")));
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}
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void testNewDiamond() {
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class Check<X> {
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Check(X x) { }
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}
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test(()-> new Check<>(makeArr("")));
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}
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void testNewGeneric() {
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class Check {
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<Z> Check(Z z) { }
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}
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test(()-> new Check(makeArr("")));
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}
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private void test(Runnable r) {
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try {
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r.run();
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throw new AssertionError("Missing synthetic cast");
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} catch (ClassCastException cce) {
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if (!cce.getMessage().contains(SYNTHETIC_CAST_TYPE)) {
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throw new AssertionError("Bad type in synthetic cast", cce);
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}
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}
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}
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public static void main(String[] args) {
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T8058199 test = new T8058199();
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test.testMethod();
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test.testNewDiamond();
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test.testNewGeneric();
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}
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}
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