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/*
* Copyright (c) 2014, 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 8058199
* @summary Code generation problem with javac skipping a checkcast instruction
*/
public class T8058199 {
final static String SYNTHETIC_CAST_TYPE = "[Ljava.lang.String;";
@SuppressWarnings("unchecked")
<Z> Z[] makeArr(Z z) { return (Z[])new Object[1]; }
<U> void check(U u) { }
void testMethod() {
test(() -> check(makeArr("")));
}
void testNewDiamond() {
class Check<X> {
Check(X x) { }
}
test(()-> new Check<>(makeArr("")));
}
void testNewGeneric() {
class Check {
<Z> Check(Z z) { }
}
test(()-> new Check(makeArr("")));
}
private void test(Runnable r) {
try {
r.run();
throw new AssertionError("Missing synthetic cast");
} catch (ClassCastException cce) {
if (!cce.getMessage().contains(SYNTHETIC_CAST_TYPE)) {
throw new AssertionError("Bad type in synthetic cast", cce);
}
}
}
public static void main(String[] args) {
T8058199 test = new T8058199();
test.testMethod();
test.testNewDiamond();
test.testNewGeneric();
}
}
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