1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
/*
* Copyright (c) 2019, 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 8234729 8242214
* @summary Javac should eagerly change code generation for method references to avert IllegalAccessError in future.
* @compile ProtectedInaccessibleMethodRefTest2.java
* @run main ProtectedInaccessibleMethodRefTest2
*/
import pack.I;
import pack.J;
import java.lang.reflect.Method;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.function.Function;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.function.BiFunction;
public final class ProtectedInaccessibleMethodRefTest2 extends I {
public static void main(String... args) {
ProtectedInaccessibleMethodRefTest2 m = new ProtectedInaccessibleMethodRefTest2();
m.test(Paths.get("test"));
// Verify that the method references have been folded into lambdas:
Set<String> methodNames = new HashSet<>();
for (Method meth : ProtectedInaccessibleMethodRefTest2.class.getDeclaredMethods()) {
methodNames.add(meth.getName());
}
List<String> expectedMethods =
Arrays.asList("lambda$test$0", "lambda$test$1", "lambda$test$2");
if (!methodNames.containsAll(expectedMethods)) {
throw new AssertionError("Did not find evidence of new code generation");
}
}
void test(Path outputDir) {
Sub c1 = new Sub(this::readFile);
c1.check(outputDir);
Sub c2 = new Sub(ProtectedInaccessibleMethodRefTest2::readFile, this);
c2.check(outputDir);
Sub c3 = new Sub(ProtectedInaccessibleMethodRefTest2::readFile2);
c3.check(outputDir);
}
public class Sub extends J {
Sub(Function<Path,String> fileReader) {
super(fileReader);
}
Sub(BiFunction<ProtectedInaccessibleMethodRefTest2, Path,String> fileReader,
ProtectedInaccessibleMethodRefTest2 instance) {
super(p -> fileReader.apply(instance, p));
}
}
}
|
