226e852831
Ensuring a proper receiver is used to invoke protected method when method reference is unrolled into a lambda. Reviewed-by: vromero
81 lines
3.0 KiB
Java
81 lines
3.0 KiB
Java
/*
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* Copyright (c) 2019, 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 8234729 8242214
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* @summary Javac should eagerly change code generation for method references to avert IllegalAccessError in future.
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* @compile ProtectedInaccessibleMethodRefTest2.java
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* @run main ProtectedInaccessibleMethodRefTest2
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*/
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import pack.I;
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import pack.J;
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import java.lang.reflect.Method;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.function.Function;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.function.BiFunction;
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public final class ProtectedInaccessibleMethodRefTest2 extends I {
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public static void main(String... args) {
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ProtectedInaccessibleMethodRefTest2 m = new ProtectedInaccessibleMethodRefTest2();
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m.test(Paths.get("test"));
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// Verify that the method references have been folded into lambdas:
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Set<String> methodNames = new HashSet<>();
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for (Method meth : ProtectedInaccessibleMethodRefTest2.class.getDeclaredMethods()) {
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methodNames.add(meth.getName());
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}
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List<String> expectedMethods =
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Arrays.asList("lambda$test$0", "lambda$test$1", "lambda$test$2");
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if (!methodNames.containsAll(expectedMethods)) {
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throw new AssertionError("Did not find evidence of new code generation");
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}
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}
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void test(Path outputDir) {
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Sub c1 = new Sub(this::readFile);
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c1.check(outputDir);
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Sub c2 = new Sub(ProtectedInaccessibleMethodRefTest2::readFile, this);
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c2.check(outputDir);
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Sub c3 = new Sub(ProtectedInaccessibleMethodRefTest2::readFile2);
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c3.check(outputDir);
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}
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public class Sub extends J {
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Sub(Function<Path,String> fileReader) {
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super(fileReader);
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}
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Sub(BiFunction<ProtectedInaccessibleMethodRefTest2, Path,String> fileReader,
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ProtectedInaccessibleMethodRefTest2 instance) {
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super(p -> fileReader.apply(instance, p));
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}
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}
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}
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