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comparison test/runtime/classFileParserBug/TestEmptyBootstrapMethodsAttr.java @ 17934:366c198c896d

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8041918: BootstrapMethods attribute cannot be empty. Summary: Allow a BootstrapMethods attribute that contains an empty bootstrap_methods table where num_bootstrap_methods is equal to zero. Reviewed-by: coleenp, hseigel
author lfoltan
date Thu, 15 May 2014 09:25:27 -0400
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17933:124e98cd679a 17934:366c198c896d
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test TestEmptyBootstrapMethodsAttr
26 * @bug 8041918
27 * @library /testlibrary
28 * @summary Test empty bootstrap_methods table within BootstrapMethods attribute
29 * @compile TestEmptyBootstrapMethodsAttr.java
30 * @run main TestEmptyBootstrapMethodsAttr
31 */
32
33 import java.io.File;
34 import com.oracle.java.testlibrary.*;
35
36 public class TestEmptyBootstrapMethodsAttr {
37
38 public static void main(String args[]) throws Throwable {
39 System.out.println("Regression test for bug 8041918");
40 String jarFile = System.getProperty("test.src") + File.separator + "emptynumbootstrapmethods.jar";
41
42 // ====== extract the test case
43 ProcessBuilder pb = new ProcessBuilder(new String[] { JDKToolFinder.getJDKTool("jar"), "xvf", jarFile } );
44 OutputAnalyzer output = new OutputAnalyzer(pb.start());
45 output.shouldHaveExitValue(0);
46
47 // Test case #1:
48 // Try loading class with empty bootstrap_methods table where no
49 // other attributes are following BootstrapMethods in attribute table.
50 String className = "emptynumbootstrapmethods1";
51
52 // ======= execute test case #1
53 // Expect a lack of main method, this implies that the class loaded correctly
54 // with an empty bootstrap_methods and did not generate a ClassFormatError.
55 pb = ProcessTools.createJavaProcessBuilder("-cp", ".", className);
56 output = new OutputAnalyzer(pb.start());
57 output.shouldNotContain("java.lang.ClassFormatError");
58 output.shouldContain("Main method not found in class " + className);
59 output.shouldHaveExitValue(1);
60
61 // Test case #2:
62 // Try loading class with empty bootstrap_methods table where an
63 // AnnotationDefault attribute follows the BootstrapMethods in the attribute table.
64 className = "emptynumbootstrapmethods2";
65
66 // ======= execute test case #2
67 // Expect a lack of main method, this implies that the class loaded correctly
68 // with an empty bootstrap_methods and did not generate ClassFormatError.
69 pb = ProcessTools.createJavaProcessBuilder("-cp", ".", className);
70 output = new OutputAnalyzer(pb.start());
71 output.shouldNotContain("java.lang.ClassFormatError");
72 output.shouldContain("Main method not found in class " + className);
73 output.shouldHaveExitValue(1);
74 }
75 }